./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d128_e0.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d128_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a588d3c60225ba2b5fa499bdd2e26f5b5447bd03ff8d36b3d014db13b2e9092d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:04:51,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:04:51,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:04:51,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:04:51,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:04:51,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:04:51,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:04:51,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:04:51,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:04:51,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:04:51,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:04:51,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:04:51,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:04:51,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:04:51,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:04:51,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:04:51,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:04:51,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:04:51,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:04:51,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:04:51,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:04:51,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:04:51,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:04:51,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:04:51,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:04:51,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:04:51,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:04:51,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:04:51,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:04:51,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:04:51,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:04:51,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:04:51,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:04:51,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:04:51,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:04:51,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:04:51,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:04:51,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:04:51,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:04:51,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:04:51,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:04:51,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:04:51,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:04:51,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:04:51,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:04:51,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:04:51,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:04:51,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:04:51,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:04:51,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:04:51,947 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:04:51,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:04:51,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:04:51,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:04:51,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:04:51,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:04:51,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:04:51,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:04:51,949 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:04:51,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:04:51,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:04:51,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:04:51,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:04:51,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:51,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:04:51,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:04:51,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:04:51,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:04:51,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:04:51,952 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:04:51,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:04:51,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:04:51,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a588d3c60225ba2b5fa499bdd2e26f5b5447bd03ff8d36b3d014db13b2e9092d [2022-11-16 11:04:52,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:04:52,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:04:52,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:04:52,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:04:52,324 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:04:52,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d128_e0.c [2022-11-16 11:04:52,392 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/data/dfd7b068a/4e57881b632d4715a46258e12535d940/FLAG35704c871 [2022-11-16 11:04:53,199 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:04:53,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d128_e0.c [2022-11-16 11:04:53,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/data/dfd7b068a/4e57881b632d4715a46258e12535d940/FLAG35704c871 [2022-11-16 11:04:53,286 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/data/dfd7b068a/4e57881b632d4715a46258e12535d940 [2022-11-16 11:04:53,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:04:53,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:04:53,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:53,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:04:53,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:04:53,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:53" (1/1) ... [2022-11-16 11:04:53,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d29e2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:53, skipping insertion in model container [2022-11-16 11:04:53,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:53" (1/1) ... [2022-11-16 11:04:53,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:04:53,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:04:53,726 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d128_e0.c[1116,1129] [2022-11-16 11:04:54,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:54,540 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:04:54,557 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d128_e0.c[1116,1129] [2022-11-16 11:04:54,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:54,927 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:04:54,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54 WrapperNode [2022-11-16 11:04:54,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:54,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:54,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:04:54,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:04:54,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,344 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 7425 [2022-11-16 11:04:55,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:55,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:04:55,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:04:55,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:04:55,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,652 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:04:55,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:04:55,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:04:55,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:04:55,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (1/1) ... [2022-11-16 11:04:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:55,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:55,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:04:55,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61344cc-e6fc-4fab-bd09-780e489a2d88/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:04:55,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:04:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:04:55,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:04:55,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:04:56,935 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:04:56,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:05:07,762 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:05:07,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:05:07,794 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:05:07,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:07 BoogieIcfgContainer [2022-11-16 11:05:07,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:05:07,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:05:07,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:05:07,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:05:07,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:04:53" (1/3) ... [2022-11-16 11:05:07,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f2d1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:07, skipping insertion in model container [2022-11-16 11:05:07,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:54" (2/3) ... [2022-11-16 11:05:07,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f2d1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:07, skipping insertion in model container [2022-11-16 11:05:07,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:07" (3/3) ... [2022-11-16 11:05:07,814 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w32_d128_e0.c [2022-11-16 11:05:07,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:05:07,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:05:07,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:07,976 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f65ce8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:07,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:05:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 1242 states, 1236 states have (on average 1.662621359223301) internal successors, (2055), 1237 states have internal predecessors, (2055), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-16 11:05:08,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:08,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:08,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1331316738, now seen corresponding path program 1 times [2022-11-16 11:05:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:08,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659500032] [2022-11-16 11:05:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:08,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:05:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:05:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:09,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:09,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659500032] [2022-11-16 11:05:09,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659500032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:09,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:09,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:09,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704140362] [2022-11-16 11:05:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:09,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:05:09,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:05:09,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:05:09,489 INFO L87 Difference]: Start difference. First operand has 1242 states, 1236 states have (on average 1.662621359223301) internal successors, (2055), 1237 states have internal predecessors, (2055), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:05:09,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:09,639 INFO L93 Difference]: Finished difference Result 2478 states and 4120 transitions. [2022-11-16 11:05:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:05:09,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 301 [2022-11-16 11:05:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:09,669 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:09,669 INFO L226 Difference]: Without dead ends: 1238 [2022-11-16 11:05:09,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:05:09,688 INFO L413 NwaCegarLoop]: 2054 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:09,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:05:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-11-16 11:05:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1238. [2022-11-16 11:05:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1233 states have (on average 1.6609894566098946) internal successors, (2048), 1233 states have internal predecessors, (2048), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 2054 transitions. [2022-11-16 11:05:09,829 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 2054 transitions. Word has length 301 [2022-11-16 11:05:09,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:09,831 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 2054 transitions. [2022-11-16 11:05:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:05:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 2054 transitions. [2022-11-16 11:05:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-16 11:05:09,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:09,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:09,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:05:09,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1613503684, now seen corresponding path program 1 times [2022-11-16 11:05:09,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:09,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898555563] [2022-11-16 11:05:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:09,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:05:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:05:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:13,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:13,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898555563] [2022-11-16 11:05:13,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898555563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:13,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:13,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322430728] [2022-11-16 11:05:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:13,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:13,993 INFO L87 Difference]: Start difference. First operand 1238 states and 2054 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:14,295 INFO L93 Difference]: Finished difference Result 2893 states and 4805 transitions. [2022-11-16 11:05:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 301 [2022-11-16 11:05:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:14,323 INFO L225 Difference]: With dead ends: 2893 [2022-11-16 11:05:14,324 INFO L226 Difference]: Without dead ends: 2891 [2022-11-16 11:05:14,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:14,327 INFO L413 NwaCegarLoop]: 2759 mSDtfsCounter, 6111 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6114 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:14,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6114 Valid, 6218 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2022-11-16 11:05:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1240. [2022-11-16 11:05:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6599190283400809) internal successors, (2050), 1235 states have internal predecessors, (2050), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2056 transitions. [2022-11-16 11:05:14,375 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2056 transitions. Word has length 301 [2022-11-16 11:05:14,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:14,376 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2056 transitions. [2022-11-16 11:05:14,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2056 transitions. [2022-11-16 11:05:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-16 11:05:14,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:14,383 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:14,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:05:14,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:14,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1522719970, now seen corresponding path program 1 times [2022-11-16 11:05:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:14,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960638895] [2022-11-16 11:05:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:14,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:05:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:05:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960638895] [2022-11-16 11:05:15,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960638895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:15,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:15,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766194270] [2022-11-16 11:05:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:15,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:15,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:15,615 INFO L87 Difference]: Start difference. First operand 1240 states and 2056 transitions. Second operand has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:17,567 INFO L93 Difference]: Finished difference Result 4793 states and 7910 transitions. [2022-11-16 11:05:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:05:17,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 302 [2022-11-16 11:05:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:17,580 INFO L225 Difference]: With dead ends: 4793 [2022-11-16 11:05:17,580 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:17,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:05:17,585 INFO L413 NwaCegarLoop]: 3549 mSDtfsCounter, 8954 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8954 SdHoareTripleChecker+Valid, 6981 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:17,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8954 Valid, 6981 Invalid, 1114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [153 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 11:05:17,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6591093117408906) internal successors, (2049), 1235 states have internal predecessors, (2049), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2055 transitions. [2022-11-16 11:05:17,632 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2055 transitions. Word has length 302 [2022-11-16 11:05:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:17,633 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2055 transitions. [2022-11-16 11:05:17,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2055 transitions. [2022-11-16 11:05:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-11-16 11:05:17,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:17,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:17,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:05:17,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:17,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1289274620, now seen corresponding path program 1 times [2022-11-16 11:05:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:17,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668649919] [2022-11-16 11:05:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:17,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:19,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:05:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:05:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:19,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:19,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668649919] [2022-11-16 11:05:19,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668649919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:19,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:19,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877622145] [2022-11-16 11:05:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:19,267 INFO L87 Difference]: Start difference. First operand 1240 states and 2055 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:05:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:19,475 INFO L93 Difference]: Finished difference Result 3710 states and 6154 transitions. [2022-11-16 11:05:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:19,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 303 [2022-11-16 11:05:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:19,486 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:19,486 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:19,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:19,491 INFO L413 NwaCegarLoop]: 2054 mSDtfsCounter, 6100 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6102 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:19,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6102 Valid, 4098 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6582995951417003) internal successors, (2048), 1235 states have internal predecessors, (2048), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2054 transitions. [2022-11-16 11:05:19,536 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2054 transitions. Word has length 303 [2022-11-16 11:05:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:19,536 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2054 transitions. [2022-11-16 11:05:19,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:05:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2054 transitions. [2022-11-16 11:05:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-16 11:05:19,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:19,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:19,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:05:19,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:19,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1519671410, now seen corresponding path program 1 times [2022-11-16 11:05:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:19,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054393118] [2022-11-16 11:05:19,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:19,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054393118] [2022-11-16 11:05:20,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054393118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:20,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:20,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248744689] [2022-11-16 11:05:20,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:20,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:20,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:20,754 INFO L87 Difference]: Start difference. First operand 1240 states and 2054 transitions. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:05:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:20,904 INFO L93 Difference]: Finished difference Result 2478 states and 4106 transitions. [2022-11-16 11:05:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 304 [2022-11-16 11:05:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:20,912 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:20,912 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:20,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:20,918 INFO L413 NwaCegarLoop]: 2040 mSDtfsCounter, 2035 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 4082 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:20,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 4082 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.65748987854251) internal successors, (2047), 1235 states have internal predecessors, (2047), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2053 transitions. [2022-11-16 11:05:20,966 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2053 transitions. Word has length 304 [2022-11-16 11:05:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:20,966 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2053 transitions. [2022-11-16 11:05:20,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:05:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2053 transitions. [2022-11-16 11:05:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-16 11:05:20,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:20,973 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:20,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:05:20,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash 575676592, now seen corresponding path program 1 times [2022-11-16 11:05:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:20,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738860222] [2022-11-16 11:05:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:22,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:22,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738860222] [2022-11-16 11:05:22,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738860222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:22,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:22,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:22,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578615909] [2022-11-16 11:05:22,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:22,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:22,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:22,804 INFO L87 Difference]: Start difference. First operand 1240 states and 2053 transitions. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:23,072 INFO L93 Difference]: Finished difference Result 3710 states and 6148 transitions. [2022-11-16 11:05:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 304 [2022-11-16 11:05:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:23,083 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:23,084 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:23,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:23,093 INFO L413 NwaCegarLoop]: 2093 mSDtfsCounter, 6028 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6028 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:23,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6028 Valid, 4134 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6566801619433198) internal successors, (2046), 1235 states have internal predecessors, (2046), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2052 transitions. [2022-11-16 11:05:23,153 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2052 transitions. Word has length 304 [2022-11-16 11:05:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:23,155 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2052 transitions. [2022-11-16 11:05:23,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2052 transitions. [2022-11-16 11:05:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-16 11:05:23,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:23,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:05:23,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1800159316, now seen corresponding path program 1 times [2022-11-16 11:05:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:23,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066722741] [2022-11-16 11:05:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:24,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:24,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066722741] [2022-11-16 11:05:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066722741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:24,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:24,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146743028] [2022-11-16 11:05:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:24,346 INFO L87 Difference]: Start difference. First operand 1240 states and 2052 transitions. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:24,646 INFO L93 Difference]: Finished difference Result 3710 states and 6145 transitions. [2022-11-16 11:05:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:24,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 305 [2022-11-16 11:05:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:24,658 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:24,658 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:24,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:24,666 INFO L413 NwaCegarLoop]: 2094 mSDtfsCounter, 6048 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6051 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:24,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6051 Valid, 4145 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:24,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6558704453441295) internal successors, (2045), 1235 states have internal predecessors, (2045), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2051 transitions. [2022-11-16 11:05:24,731 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2051 transitions. Word has length 305 [2022-11-16 11:05:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2051 transitions. [2022-11-16 11:05:24,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2051 transitions. [2022-11-16 11:05:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-16 11:05:24,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:24,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:24,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:05:24,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:24,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash -232096746, now seen corresponding path program 1 times [2022-11-16 11:05:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:24,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062071680] [2022-11-16 11:05:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062071680] [2022-11-16 11:05:26,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062071680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:26,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230470600] [2022-11-16 11:05:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:26,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:26,101 INFO L87 Difference]: Start difference. First operand 1240 states and 2051 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:26,247 INFO L93 Difference]: Finished difference Result 2478 states and 4100 transitions. [2022-11-16 11:05:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:26,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 306 [2022-11-16 11:05:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:26,258 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:26,259 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:26,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:26,262 INFO L413 NwaCegarLoop]: 2033 mSDtfsCounter, 2010 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:26,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 4068 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6550607287449393) internal successors, (2044), 1235 states have internal predecessors, (2044), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2050 transitions. [2022-11-16 11:05:26,308 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2050 transitions. Word has length 306 [2022-11-16 11:05:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:26,309 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2050 transitions. [2022-11-16 11:05:26,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2050 transitions. [2022-11-16 11:05:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-16 11:05:26,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:26,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:26,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:05:26,316 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1835555628, now seen corresponding path program 1 times [2022-11-16 11:05:26,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:26,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902045023] [2022-11-16 11:05:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:27,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:27,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902045023] [2022-11-16 11:05:27,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902045023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:27,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:27,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354717639] [2022-11-16 11:05:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:27,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:27,708 INFO L87 Difference]: Start difference. First operand 1240 states and 2050 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:27,988 INFO L93 Difference]: Finished difference Result 3710 states and 6139 transitions. [2022-11-16 11:05:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 306 [2022-11-16 11:05:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:27,999 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:27,999 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:28,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:28,005 INFO L413 NwaCegarLoop]: 2081 mSDtfsCounter, 6006 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6006 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:28,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6006 Valid, 4103 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.654251012145749) internal successors, (2043), 1235 states have internal predecessors, (2043), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2049 transitions. [2022-11-16 11:05:28,054 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2049 transitions. Word has length 306 [2022-11-16 11:05:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:28,055 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2049 transitions. [2022-11-16 11:05:28,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2049 transitions. [2022-11-16 11:05:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-16 11:05:28,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:28,062 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:28,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:05:28,063 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash -994406404, now seen corresponding path program 1 times [2022-11-16 11:05:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:28,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472325413] [2022-11-16 11:05:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:29,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:29,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472325413] [2022-11-16 11:05:29,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472325413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:29,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:29,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:29,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392039673] [2022-11-16 11:05:29,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:29,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:29,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:29,107 INFO L87 Difference]: Start difference. First operand 1240 states and 2049 transitions. Second operand has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:29,411 INFO L93 Difference]: Finished difference Result 3710 states and 6136 transitions. [2022-11-16 11:05:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:29,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 307 [2022-11-16 11:05:29,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:29,421 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:29,421 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:29,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:29,425 INFO L413 NwaCegarLoop]: 2082 mSDtfsCounter, 9996 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9999 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:29,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9999 Valid, 4104 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6534412955465587) internal successors, (2042), 1235 states have internal predecessors, (2042), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2048 transitions. [2022-11-16 11:05:29,470 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2048 transitions. Word has length 307 [2022-11-16 11:05:29,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:29,471 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2048 transitions. [2022-11-16 11:05:29,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2048 transitions. [2022-11-16 11:05:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-16 11:05:29,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:29,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:29,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:05:29,478 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash -290532422, now seen corresponding path program 1 times [2022-11-16 11:05:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:29,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668945406] [2022-11-16 11:05:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:29,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:30,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:30,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668945406] [2022-11-16 11:05:30,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668945406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:30,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:30,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:30,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167202385] [2022-11-16 11:05:30,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:30,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:30,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:30,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:30,406 INFO L87 Difference]: Start difference. First operand 1240 states and 2048 transitions. Second operand has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:30,720 INFO L93 Difference]: Finished difference Result 3710 states and 6133 transitions. [2022-11-16 11:05:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:30,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 308 [2022-11-16 11:05:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:30,747 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:30,756 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:30,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:30,759 INFO L413 NwaCegarLoop]: 2083 mSDtfsCounter, 9980 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9983 SdHoareTripleChecker+Valid, 4105 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:30,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9983 Valid, 4105 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:30,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6526315789473685) internal successors, (2041), 1235 states have internal predecessors, (2041), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2047 transitions. [2022-11-16 11:05:30,802 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2047 transitions. Word has length 308 [2022-11-16 11:05:30,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:30,803 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2047 transitions. [2022-11-16 11:05:30,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2047 transitions. [2022-11-16 11:05:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-16 11:05:30,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:30,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:30,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:05:30,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1299049694, now seen corresponding path program 1 times [2022-11-16 11:05:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:30,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663622332] [2022-11-16 11:05:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:31,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663622332] [2022-11-16 11:05:31,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663622332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:31,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:31,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842186612] [2022-11-16 11:05:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:31,655 INFO L87 Difference]: Start difference. First operand 1240 states and 2047 transitions. Second operand has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:31,956 INFO L93 Difference]: Finished difference Result 3710 states and 6130 transitions. [2022-11-16 11:05:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:31,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 309 [2022-11-16 11:05:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:31,964 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:31,964 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:31,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:31,968 INFO L413 NwaCegarLoop]: 2084 mSDtfsCounter, 9964 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9967 SdHoareTripleChecker+Valid, 4106 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:31,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9967 Valid, 4106 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:31,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6518218623481782) internal successors, (2040), 1235 states have internal predecessors, (2040), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2046 transitions. [2022-11-16 11:05:32,014 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2046 transitions. Word has length 309 [2022-11-16 11:05:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:32,014 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2046 transitions. [2022-11-16 11:05:32,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2046 transitions. [2022-11-16 11:05:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-16 11:05:32,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:32,099 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:32,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:05:32,099 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1856148064, now seen corresponding path program 1 times [2022-11-16 11:05:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:32,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571350614] [2022-11-16 11:05:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:33,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:33,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571350614] [2022-11-16 11:05:33,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571350614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:33,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:33,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636824789] [2022-11-16 11:05:33,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:33,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:33,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:33,100 INFO L87 Difference]: Start difference. First operand 1240 states and 2046 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:33,264 INFO L93 Difference]: Finished difference Result 2478 states and 4090 transitions. [2022-11-16 11:05:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 310 [2022-11-16 11:05:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:33,270 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:33,270 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:33,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:33,273 INFO L413 NwaCegarLoop]: 2014 mSDtfsCounter, 1993 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:33,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 4030 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.651012145748988) internal successors, (2039), 1235 states have internal predecessors, (2039), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2045 transitions. [2022-11-16 11:05:33,326 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2045 transitions. Word has length 310 [2022-11-16 11:05:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:33,326 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2045 transitions. [2022-11-16 11:05:33,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2045 transitions. [2022-11-16 11:05:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-16 11:05:33,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:33,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:33,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:05:33,332 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:33,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2128202658, now seen corresponding path program 1 times [2022-11-16 11:05:33,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:33,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327499100] [2022-11-16 11:05:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:33,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:34,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:34,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327499100] [2022-11-16 11:05:34,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327499100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:34,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:34,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:34,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755785916] [2022-11-16 11:05:34,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:34,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:34,369 INFO L87 Difference]: Start difference. First operand 1240 states and 2045 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:34,550 INFO L93 Difference]: Finished difference Result 2478 states and 4088 transitions. [2022-11-16 11:05:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:34,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 310 [2022-11-16 11:05:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:34,555 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:34,555 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:34,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:34,558 INFO L413 NwaCegarLoop]: 2014 mSDtfsCounter, 1995 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:34,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1995 Valid, 4030 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6502024291497976) internal successors, (2038), 1235 states have internal predecessors, (2038), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2044 transitions. [2022-11-16 11:05:34,593 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2044 transitions. Word has length 310 [2022-11-16 11:05:34,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:34,594 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2044 transitions. [2022-11-16 11:05:34,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2044 transitions. [2022-11-16 11:05:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-16 11:05:34,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:34,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:34,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:05:34,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:34,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:34,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1991642336, now seen corresponding path program 1 times [2022-11-16 11:05:34,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:34,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429906611] [2022-11-16 11:05:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:34,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:35,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:35,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429906611] [2022-11-16 11:05:35,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429906611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:35,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:35,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253345205] [2022-11-16 11:05:35,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:35,739 INFO L87 Difference]: Start difference. First operand 1240 states and 2044 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:35,933 INFO L93 Difference]: Finished difference Result 2478 states and 4086 transitions. [2022-11-16 11:05:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:35,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 310 [2022-11-16 11:05:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:35,939 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:35,939 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:35,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:35,945 INFO L413 NwaCegarLoop]: 2014 mSDtfsCounter, 1997 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:35,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 4030 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6493927125506074) internal successors, (2037), 1235 states have internal predecessors, (2037), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2043 transitions. [2022-11-16 11:05:35,991 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2043 transitions. Word has length 310 [2022-11-16 11:05:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:35,992 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2043 transitions. [2022-11-16 11:05:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2043 transitions. [2022-11-16 11:05:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-16 11:05:35,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:35,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:35,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:05:35,997 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash -986559202, now seen corresponding path program 1 times [2022-11-16 11:05:35,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:35,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992051858] [2022-11-16 11:05:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:35,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:37,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992051858] [2022-11-16 11:05:37,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992051858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:37,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:37,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:37,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111228098] [2022-11-16 11:05:37,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:37,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:37,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:37,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:37,515 INFO L87 Difference]: Start difference. First operand 1240 states and 2043 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:37,933 INFO L93 Difference]: Finished difference Result 3710 states and 6118 transitions. [2022-11-16 11:05:37,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:37,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 310 [2022-11-16 11:05:37,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:37,941 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:37,941 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:37,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:37,945 INFO L413 NwaCegarLoop]: 2055 mSDtfsCounter, 5960 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5960 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:37,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5960 Valid, 4038 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:05:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.648582995951417) internal successors, (2036), 1235 states have internal predecessors, (2036), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2042 transitions. [2022-11-16 11:05:38,001 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2042 transitions. Word has length 310 [2022-11-16 11:05:38,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:38,002 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2042 transitions. [2022-11-16 11:05:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2042 transitions. [2022-11-16 11:05:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-16 11:05:38,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:38,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:38,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:05:38,008 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2072174198, now seen corresponding path program 1 times [2022-11-16 11:05:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109441961] [2022-11-16 11:05:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:38,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:38,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:38,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109441961] [2022-11-16 11:05:38,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109441961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:38,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:38,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524134993] [2022-11-16 11:05:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:38,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:38,878 INFO L87 Difference]: Start difference. First operand 1240 states and 2042 transitions. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:39,273 INFO L93 Difference]: Finished difference Result 3710 states and 6115 transitions. [2022-11-16 11:05:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:39,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 311 [2022-11-16 11:05:39,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:39,281 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:39,281 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:39,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:39,285 INFO L413 NwaCegarLoop]: 2056 mSDtfsCounter, 9923 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9926 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:39,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9926 Valid, 4039 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:05:39,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6477732793522266) internal successors, (2035), 1235 states have internal predecessors, (2035), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2041 transitions. [2022-11-16 11:05:39,331 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2041 transitions. Word has length 311 [2022-11-16 11:05:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:39,332 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2041 transitions. [2022-11-16 11:05:39,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2041 transitions. [2022-11-16 11:05:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-16 11:05:39,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:39,336 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:39,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:05:39,336 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:39,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:39,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1689654652, now seen corresponding path program 1 times [2022-11-16 11:05:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:39,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043596622] [2022-11-16 11:05:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:39,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:40,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:40,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043596622] [2022-11-16 11:05:40,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043596622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:40,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:40,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:40,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109369067] [2022-11-16 11:05:40,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:40,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:40,219 INFO L87 Difference]: Start difference. First operand 1240 states and 2041 transitions. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:40,585 INFO L93 Difference]: Finished difference Result 3710 states and 6112 transitions. [2022-11-16 11:05:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 312 [2022-11-16 11:05:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:40,592 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:40,592 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:40,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:40,596 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 5991 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5994 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:40,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5994 Valid, 4050 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:05:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6469635627530363) internal successors, (2034), 1235 states have internal predecessors, (2034), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2040 transitions. [2022-11-16 11:05:40,638 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2040 transitions. Word has length 312 [2022-11-16 11:05:40,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:40,638 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2040 transitions. [2022-11-16 11:05:40,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2040 transitions. [2022-11-16 11:05:40,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-16 11:05:40,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:40,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:40,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:05:40,643 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1232989648, now seen corresponding path program 1 times [2022-11-16 11:05:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:40,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263752943] [2022-11-16 11:05:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:41,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:41,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263752943] [2022-11-16 11:05:41,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263752943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:41,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:41,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:41,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729625366] [2022-11-16 11:05:41,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:41,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:41,437 INFO L87 Difference]: Start difference. First operand 1240 states and 2040 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:41,793 INFO L93 Difference]: Finished difference Result 3710 states and 6109 transitions. [2022-11-16 11:05:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:41,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 313 [2022-11-16 11:05:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:41,801 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:41,801 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:41,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:41,804 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 5984 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5987 SdHoareTripleChecker+Valid, 4051 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:41,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5987 Valid, 4051 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:05:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.646153846153846) internal successors, (2033), 1235 states have internal predecessors, (2033), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2039 transitions. [2022-11-16 11:05:41,846 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2039 transitions. Word has length 313 [2022-11-16 11:05:41,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:41,847 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2039 transitions. [2022-11-16 11:05:41,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2039 transitions. [2022-11-16 11:05:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-16 11:05:41,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:41,850 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:05:41,851 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -567553302, now seen corresponding path program 1 times [2022-11-16 11:05:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:41,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957805457] [2022-11-16 11:05:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:41,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:42,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:42,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957805457] [2022-11-16 11:05:42,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957805457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:42,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:42,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:42,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217992611] [2022-11-16 11:05:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:42,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:42,639 INFO L87 Difference]: Start difference. First operand 1240 states and 2039 transitions. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:42,997 INFO L93 Difference]: Finished difference Result 3710 states and 6106 transitions. [2022-11-16 11:05:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 314 [2022-11-16 11:05:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:43,004 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:43,004 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:43,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:43,008 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 5977 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:43,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5980 Valid, 4052 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:05:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6453441295546558) internal successors, (2032), 1235 states have internal predecessors, (2032), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2038 transitions. [2022-11-16 11:05:43,054 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2038 transitions. Word has length 314 [2022-11-16 11:05:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:43,055 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2038 transitions. [2022-11-16 11:05:43,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2038 transitions. [2022-11-16 11:05:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-16 11:05:43,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:43,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:43,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:05:43,059 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:43,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash -270361130, now seen corresponding path program 1 times [2022-11-16 11:05:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:43,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762567306] [2022-11-16 11:05:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:43,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:43,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762567306] [2022-11-16 11:05:43,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762567306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:43,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:43,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476452274] [2022-11-16 11:05:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:43,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:43,859 INFO L87 Difference]: Start difference. First operand 1240 states and 2038 transitions. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:44,203 INFO L93 Difference]: Finished difference Result 3710 states and 6103 transitions. [2022-11-16 11:05:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 315 [2022-11-16 11:05:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:44,211 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:44,211 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:44,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:44,215 INFO L413 NwaCegarLoop]: 2060 mSDtfsCounter, 5970 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5973 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:44,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5973 Valid, 4053 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6445344129554655) internal successors, (2031), 1235 states have internal predecessors, (2031), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2037 transitions. [2022-11-16 11:05:44,253 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2037 transitions. Word has length 315 [2022-11-16 11:05:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:44,254 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2037 transitions. [2022-11-16 11:05:44,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2037 transitions. [2022-11-16 11:05:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-16 11:05:44,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:44,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:44,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:05:44,258 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:44,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash -647264688, now seen corresponding path program 1 times [2022-11-16 11:05:44,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:44,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384369800] [2022-11-16 11:05:44,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:45,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:45,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:45,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384369800] [2022-11-16 11:05:45,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384369800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:45,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:45,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:45,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019352136] [2022-11-16 11:05:45,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:45,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:45,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:45,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:45,122 INFO L87 Difference]: Start difference. First operand 1240 states and 2037 transitions. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:45,464 INFO L93 Difference]: Finished difference Result 3710 states and 6100 transitions. [2022-11-16 11:05:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:45,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 316 [2022-11-16 11:05:45,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:45,470 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:45,471 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:45,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:45,474 INFO L413 NwaCegarLoop]: 2061 mSDtfsCounter, 5963 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5966 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:45,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5966 Valid, 4054 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6437246963562753) internal successors, (2030), 1235 states have internal predecessors, (2030), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2036 transitions. [2022-11-16 11:05:45,512 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2036 transitions. Word has length 316 [2022-11-16 11:05:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:45,512 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2036 transitions. [2022-11-16 11:05:45,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2036 transitions. [2022-11-16 11:05:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-16 11:05:45,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:45,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:45,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:05:45,517 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1766964100, now seen corresponding path program 1 times [2022-11-16 11:05:45,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:45,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702547280] [2022-11-16 11:05:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:45,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:46,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:46,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702547280] [2022-11-16 11:05:46,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702547280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:46,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:46,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166962217] [2022-11-16 11:05:46,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:46,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:46,220 INFO L87 Difference]: Start difference. First operand 1240 states and 2036 transitions. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:46,575 INFO L93 Difference]: Finished difference Result 3710 states and 6097 transitions. [2022-11-16 11:05:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:46,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 317 [2022-11-16 11:05:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:46,583 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:46,583 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:46,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:46,586 INFO L413 NwaCegarLoop]: 2062 mSDtfsCounter, 5956 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5959 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:46,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5959 Valid, 4055 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:05:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.642914979757085) internal successors, (2029), 1235 states have internal predecessors, (2029), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2035 transitions. [2022-11-16 11:05:46,623 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2035 transitions. Word has length 317 [2022-11-16 11:05:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:46,624 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2035 transitions. [2022-11-16 11:05:46,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2035 transitions. [2022-11-16 11:05:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:46,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:46,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:05:46,628 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1490846902, now seen corresponding path program 1 times [2022-11-16 11:05:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:46,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036935172] [2022-11-16 11:05:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036935172] [2022-11-16 11:05:47,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036935172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:47,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:47,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:47,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744646348] [2022-11-16 11:05:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:47,375 INFO L87 Difference]: Start difference. First operand 1240 states and 2035 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:47,587 INFO L93 Difference]: Finished difference Result 2478 states and 4068 transitions. [2022-11-16 11:05:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:47,591 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:47,592 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:47,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:47,594 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1958 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:47,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 3952 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:47,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6421052631578947) internal successors, (2028), 1235 states have internal predecessors, (2028), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2034 transitions. [2022-11-16 11:05:47,625 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2034 transitions. Word has length 318 [2022-11-16 11:05:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:47,625 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2034 transitions. [2022-11-16 11:05:47,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2034 transitions. [2022-11-16 11:05:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:47,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:47,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:47,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:05:47,629 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:47,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1255573364, now seen corresponding path program 1 times [2022-11-16 11:05:47,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:47,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690350173] [2022-11-16 11:05:47,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:48,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:48,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690350173] [2022-11-16 11:05:48,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690350173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:48,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:48,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089528295] [2022-11-16 11:05:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:48,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:48,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:48,580 INFO L87 Difference]: Start difference. First operand 1240 states and 2034 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:48,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:48,794 INFO L93 Difference]: Finished difference Result 2478 states and 4066 transitions. [2022-11-16 11:05:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:48,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:48,798 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:48,798 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:48,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:48,801 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1960 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:48,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 3952 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:48,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6412955465587045) internal successors, (2027), 1235 states have internal predecessors, (2027), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2033 transitions. [2022-11-16 11:05:48,833 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2033 transitions. Word has length 318 [2022-11-16 11:05:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:48,833 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2033 transitions. [2022-11-16 11:05:48,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2033 transitions. [2022-11-16 11:05:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:48,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:48,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:48,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:05:48,837 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1608229878, now seen corresponding path program 1 times [2022-11-16 11:05:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:48,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53919020] [2022-11-16 11:05:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:49,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:49,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53919020] [2022-11-16 11:05:49,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53919020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:49,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:49,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932097337] [2022-11-16 11:05:49,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:49,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:49,629 INFO L87 Difference]: Start difference. First operand 1240 states and 2033 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:49,845 INFO L93 Difference]: Finished difference Result 2478 states and 4064 transitions. [2022-11-16 11:05:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:49,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:49,849 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:49,849 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:49,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:49,852 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1962 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:49,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 3952 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6404858299595142) internal successors, (2026), 1235 states have internal predecessors, (2026), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2032 transitions. [2022-11-16 11:05:49,884 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2032 transitions. Word has length 318 [2022-11-16 11:05:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:49,885 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2032 transitions. [2022-11-16 11:05:49,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2032 transitions. [2022-11-16 11:05:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:49,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:49,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:49,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:05:49,889 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2108432436, now seen corresponding path program 1 times [2022-11-16 11:05:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:49,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007352457] [2022-11-16 11:05:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:49,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007352457] [2022-11-16 11:05:50,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007352457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:50,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:50,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:50,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473229456] [2022-11-16 11:05:50,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:50,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:50,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:50,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:50,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:50,816 INFO L87 Difference]: Start difference. First operand 1240 states and 2032 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:51,025 INFO L93 Difference]: Finished difference Result 2478 states and 4062 transitions. [2022-11-16 11:05:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:51,029 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:51,030 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:51,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:51,032 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1964 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:51,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 3952 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.639676113360324) internal successors, (2025), 1235 states have internal predecessors, (2025), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2031 transitions. [2022-11-16 11:05:51,062 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2031 transitions. Word has length 318 [2022-11-16 11:05:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:51,063 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2031 transitions. [2022-11-16 11:05:51,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2031 transitions. [2022-11-16 11:05:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:51,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:51,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:51,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:05:51,067 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash 106320694, now seen corresponding path program 1 times [2022-11-16 11:05:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:51,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773415315] [2022-11-16 11:05:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:51,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:51,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:51,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773415315] [2022-11-16 11:05:51,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773415315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:51,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:51,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91008463] [2022-11-16 11:05:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:51,874 INFO L87 Difference]: Start difference. First operand 1240 states and 2031 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:52,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:52,066 INFO L93 Difference]: Finished difference Result 2478 states and 4060 transitions. [2022-11-16 11:05:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:52,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:52,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:52,071 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:52,071 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:52,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:52,074 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1966 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:52,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 3952 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:05:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6388663967611337) internal successors, (2024), 1235 states have internal predecessors, (2024), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2030 transitions. [2022-11-16 11:05:52,105 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2030 transitions. Word has length 318 [2022-11-16 11:05:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:52,106 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2030 transitions. [2022-11-16 11:05:52,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:52,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2030 transitions. [2022-11-16 11:05:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:52,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:52,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:05:52,110 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:52,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash -593745676, now seen corresponding path program 1 times [2022-11-16 11:05:52,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:52,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434973679] [2022-11-16 11:05:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:52,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:52,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434973679] [2022-11-16 11:05:52,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434973679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:52,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:52,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057234255] [2022-11-16 11:05:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:52,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:52,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:52,910 INFO L87 Difference]: Start difference. First operand 1240 states and 2030 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:53,123 INFO L93 Difference]: Finished difference Result 2478 states and 4058 transitions. [2022-11-16 11:05:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:53,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:53,127 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:53,127 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:53,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:53,130 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1968 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:53,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 3952 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6380566801619434) internal successors, (2023), 1235 states have internal predecessors, (2023), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2029 transitions. [2022-11-16 11:05:53,161 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2029 transitions. Word has length 318 [2022-11-16 11:05:53,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:53,162 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2029 transitions. [2022-11-16 11:05:53,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2029 transitions. [2022-11-16 11:05:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:53,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:53,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:05:53,166 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 90215030, now seen corresponding path program 1 times [2022-11-16 11:05:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:53,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329190338] [2022-11-16 11:05:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:53,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:54,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:54,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329190338] [2022-11-16 11:05:54,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329190338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:54,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:54,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:54,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904537726] [2022-11-16 11:05:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:54,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:54,362 INFO L87 Difference]: Start difference. First operand 1240 states and 2029 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:54,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:54,583 INFO L93 Difference]: Finished difference Result 2478 states and 4056 transitions. [2022-11-16 11:05:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:54,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:54,587 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:05:54,587 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:05:54,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:54,590 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1970 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:54,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 3952 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:05:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:05:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6372469635627531) internal successors, (2022), 1235 states have internal predecessors, (2022), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2028 transitions. [2022-11-16 11:05:54,630 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2028 transitions. Word has length 318 [2022-11-16 11:05:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:54,631 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2028 transitions. [2022-11-16 11:05:54,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2028 transitions. [2022-11-16 11:05:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-16 11:05:54,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:54,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:54,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 11:05:54,637 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash 638755252, now seen corresponding path program 1 times [2022-11-16 11:05:54,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:54,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541721971] [2022-11-16 11:05:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:54,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:55,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:55,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541721971] [2022-11-16 11:05:55,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541721971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:55,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:55,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:05:55,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228392661] [2022-11-16 11:05:55,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:55,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:55,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:55,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:55,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:55,610 INFO L87 Difference]: Start difference. First operand 1240 states and 2028 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:56,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:56,129 INFO L93 Difference]: Finished difference Result 3710 states and 6073 transitions. [2022-11-16 11:05:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:56,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 318 [2022-11-16 11:05:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:56,136 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:56,136 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:56,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:56,140 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 5866 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5866 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:56,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5866 Valid, 3905 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:05:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:56,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6364372469635629) internal successors, (2021), 1235 states have internal predecessors, (2021), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2027 transitions. [2022-11-16 11:05:56,178 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2027 transitions. Word has length 318 [2022-11-16 11:05:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:56,179 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2027 transitions. [2022-11-16 11:05:56,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2027 transitions. [2022-11-16 11:05:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-16 11:05:56,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:56,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:56,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:05:56,183 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:56,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:56,184 INFO L85 PathProgramCache]: Analyzing trace with hash 63047908, now seen corresponding path program 1 times [2022-11-16 11:05:56,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:56,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610291048] [2022-11-16 11:05:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:56,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:56,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:56,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610291048] [2022-11-16 11:05:56,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610291048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:56,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:56,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:56,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201987522] [2022-11-16 11:05:56,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:56,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:56,892 INFO L87 Difference]: Start difference. First operand 1240 states and 2027 transitions. Second operand has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:57,431 INFO L93 Difference]: Finished difference Result 3710 states and 6070 transitions. [2022-11-16 11:05:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:57,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 319 [2022-11-16 11:05:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:57,437 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:57,438 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:57,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:57,441 INFO L413 NwaCegarLoop]: 2002 mSDtfsCounter, 9774 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9777 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:57,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9777 Valid, 3906 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:05:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6356275303643724) internal successors, (2020), 1235 states have internal predecessors, (2020), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2026 transitions. [2022-11-16 11:05:57,480 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2026 transitions. Word has length 319 [2022-11-16 11:05:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:57,480 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2026 transitions. [2022-11-16 11:05:57,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2026 transitions. [2022-11-16 11:05:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-16 11:05:57,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:57,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:57,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:05:57,484 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2135612518, now seen corresponding path program 1 times [2022-11-16 11:05:57,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:57,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816439082] [2022-11-16 11:05:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:57,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:58,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816439082] [2022-11-16 11:05:58,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816439082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:58,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:58,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526143940] [2022-11-16 11:05:58,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:58,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:58,194 INFO L87 Difference]: Start difference. First operand 1240 states and 2026 transitions. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:58,689 INFO L93 Difference]: Finished difference Result 3710 states and 6067 transitions. [2022-11-16 11:05:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:58,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 320 [2022-11-16 11:05:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:58,694 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:05:58,694 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:05:58,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:58,698 INFO L413 NwaCegarLoop]: 2003 mSDtfsCounter, 9758 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9761 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:58,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9761 Valid, 3907 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:05:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:05:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:05:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.634817813765182) internal successors, (2019), 1235 states have internal predecessors, (2019), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:05:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2025 transitions. [2022-11-16 11:05:58,741 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2025 transitions. Word has length 320 [2022-11-16 11:05:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:58,742 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2025 transitions. [2022-11-16 11:05:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:05:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2025 transitions. [2022-11-16 11:05:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-16 11:05:58,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:58,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:58,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:05:58,746 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash 792509706, now seen corresponding path program 1 times [2022-11-16 11:05:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:58,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71602235] [2022-11-16 11:05:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:05:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:59,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:05:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:05:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:59,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71602235] [2022-11-16 11:05:59,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71602235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:59,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:59,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:59,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421295128] [2022-11-16 11:05:59,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:05:59,491 INFO L87 Difference]: Start difference. First operand 1240 states and 2025 transitions. Second operand has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:00,130 INFO L93 Difference]: Finished difference Result 3710 states and 6064 transitions. [2022-11-16 11:06:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:00,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 321 [2022-11-16 11:06:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:00,135 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:00,135 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:00,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:00,138 INFO L413 NwaCegarLoop]: 2004 mSDtfsCounter, 9742 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9745 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:00,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9745 Valid, 3908 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:06:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6340080971659918) internal successors, (2018), 1235 states have internal predecessors, (2018), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2024 transitions. [2022-11-16 11:06:00,175 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2024 transitions. Word has length 321 [2022-11-16 11:06:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:00,175 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2024 transitions. [2022-11-16 11:06:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2024 transitions. [2022-11-16 11:06:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-16 11:06:00,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:00,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:00,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:06:00,179 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1873006720, now seen corresponding path program 1 times [2022-11-16 11:06:00,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:00,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353558664] [2022-11-16 11:06:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:00,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:00,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353558664] [2022-11-16 11:06:00,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353558664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:00,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:00,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:00,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126540727] [2022-11-16 11:06:00,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:00,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:00,898 INFO L87 Difference]: Start difference. First operand 1240 states and 2024 transitions. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:01,442 INFO L93 Difference]: Finished difference Result 3710 states and 6061 transitions. [2022-11-16 11:06:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:01,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 322 [2022-11-16 11:06:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:01,446 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:01,446 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:01,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:01,449 INFO L413 NwaCegarLoop]: 2005 mSDtfsCounter, 9726 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9729 SdHoareTripleChecker+Valid, 3909 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:01,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9729 Valid, 3909 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6331983805668016) internal successors, (2017), 1235 states have internal predecessors, (2017), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2023 transitions. [2022-11-16 11:06:01,491 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2023 transitions. Word has length 322 [2022-11-16 11:06:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:01,491 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2023 transitions. [2022-11-16 11:06:01,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:01,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2023 transitions. [2022-11-16 11:06:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-16 11:06:01,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:01,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 11:06:01,495 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1869009872, now seen corresponding path program 1 times [2022-11-16 11:06:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:01,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291431012] [2022-11-16 11:06:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:01,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:02,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291431012] [2022-11-16 11:06:02,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291431012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:02,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:02,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449433765] [2022-11-16 11:06:02,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:02,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:02,157 INFO L87 Difference]: Start difference. First operand 1240 states and 2023 transitions. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:02,701 INFO L93 Difference]: Finished difference Result 3710 states and 6058 transitions. [2022-11-16 11:06:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:02,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 323 [2022-11-16 11:06:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:02,704 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:02,704 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:02,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:02,708 INFO L413 NwaCegarLoop]: 2006 mSDtfsCounter, 9710 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9713 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:02,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9713 Valid, 3910 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:02,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6323886639676113) internal successors, (2016), 1235 states have internal predecessors, (2016), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2022 transitions. [2022-11-16 11:06:02,745 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2022 transitions. Word has length 323 [2022-11-16 11:06:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:02,746 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2022 transitions. [2022-11-16 11:06:02,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2022 transitions. [2022-11-16 11:06:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-16 11:06:02,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:02,749 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:02,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 11:06:02,750 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash 570042470, now seen corresponding path program 1 times [2022-11-16 11:06:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:02,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103483588] [2022-11-16 11:06:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:02,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:03,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:03,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103483588] [2022-11-16 11:06:03,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103483588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:03,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:03,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621688374] [2022-11-16 11:06:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:03,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:03,343 INFO L87 Difference]: Start difference. First operand 1240 states and 2022 transitions. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:03,837 INFO L93 Difference]: Finished difference Result 3710 states and 6055 transitions. [2022-11-16 11:06:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:03,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 324 [2022-11-16 11:06:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:03,841 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:03,842 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:03,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:03,845 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 9694 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9697 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:03,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9697 Valid, 3911 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.631578947368421) internal successors, (2015), 1235 states have internal predecessors, (2015), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2021 transitions. [2022-11-16 11:06:03,881 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2021 transitions. Word has length 324 [2022-11-16 11:06:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:03,882 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2021 transitions. [2022-11-16 11:06:03,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2021 transitions. [2022-11-16 11:06:03,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-16 11:06:03,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:03,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:03,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 11:06:03,886 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:03,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -513878442, now seen corresponding path program 1 times [2022-11-16 11:06:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:03,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581563819] [2022-11-16 11:06:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:03,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:04,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:04,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:04,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:04,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581563819] [2022-11-16 11:06:04,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581563819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:04,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:04,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:04,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933072961] [2022-11-16 11:06:04,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:04,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:04,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:04,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:04,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:04,505 INFO L87 Difference]: Start difference. First operand 1240 states and 2021 transitions. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:05,020 INFO L93 Difference]: Finished difference Result 3710 states and 6052 transitions. [2022-11-16 11:06:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:05,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 325 [2022-11-16 11:06:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:05,025 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:05,025 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:05,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:05,028 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 5886 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5889 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:05,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5889 Valid, 3922 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6307692307692307) internal successors, (2014), 1235 states have internal predecessors, (2014), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2020 transitions. [2022-11-16 11:06:05,066 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2020 transitions. Word has length 325 [2022-11-16 11:06:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:05,067 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2020 transitions. [2022-11-16 11:06:05,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2020 transitions. [2022-11-16 11:06:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-16 11:06:05,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:05,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:05,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 11:06:05,071 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -988566708, now seen corresponding path program 1 times [2022-11-16 11:06:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:05,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740785170] [2022-11-16 11:06:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:05,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:05,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:05,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740785170] [2022-11-16 11:06:05,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740785170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:05,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:05,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:05,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658146994] [2022-11-16 11:06:05,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:05,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:05,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:05,962 INFO L87 Difference]: Start difference. First operand 1240 states and 2020 transitions. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:06,481 INFO L93 Difference]: Finished difference Result 3710 states and 6049 transitions. [2022-11-16 11:06:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 326 [2022-11-16 11:06:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:06,486 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:06,486 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:06,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:06,489 INFO L413 NwaCegarLoop]: 2009 mSDtfsCounter, 5879 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5882 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:06,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5882 Valid, 3923 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6299595141700405) internal successors, (2013), 1235 states have internal predecessors, (2013), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2019 transitions. [2022-11-16 11:06:06,528 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2019 transitions. Word has length 326 [2022-11-16 11:06:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:06,529 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2019 transitions. [2022-11-16 11:06:06,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2019 transitions. [2022-11-16 11:06:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-16 11:06:06,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:06,533 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:06,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 11:06:06,534 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:06,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash 911555452, now seen corresponding path program 1 times [2022-11-16 11:06:06,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:06,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737472721] [2022-11-16 11:06:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:06,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737472721] [2022-11-16 11:06:07,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737472721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:07,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:07,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246782189] [2022-11-16 11:06:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:07,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:07,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:07,159 INFO L87 Difference]: Start difference. First operand 1240 states and 2019 transitions. Second operand has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:07,678 INFO L93 Difference]: Finished difference Result 3710 states and 6046 transitions. [2022-11-16 11:06:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:07,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 327 [2022-11-16 11:06:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:07,681 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:07,681 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:07,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:07,684 INFO L413 NwaCegarLoop]: 2010 mSDtfsCounter, 9646 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9649 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:07,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9649 Valid, 3914 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:07,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6291497975708502) internal successors, (2012), 1235 states have internal predecessors, (2012), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2018 transitions. [2022-11-16 11:06:07,717 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2018 transitions. Word has length 327 [2022-11-16 11:06:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:07,718 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2018 transitions. [2022-11-16 11:06:07,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2018 transitions. [2022-11-16 11:06:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-16 11:06:07,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:07,722 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:07,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 11:06:07,723 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:07,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:07,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2071209678, now seen corresponding path program 1 times [2022-11-16 11:06:07,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:07,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268084210] [2022-11-16 11:06:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:08,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:08,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268084210] [2022-11-16 11:06:08,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268084210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:08,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:08,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:08,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776597168] [2022-11-16 11:06:08,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:08,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:08,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:08,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:08,323 INFO L87 Difference]: Start difference. First operand 1240 states and 2018 transitions. Second operand has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:08,812 INFO L93 Difference]: Finished difference Result 3710 states and 6043 transitions. [2022-11-16 11:06:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:08,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 328 [2022-11-16 11:06:08,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:08,816 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:08,816 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:08,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:08,819 INFO L413 NwaCegarLoop]: 2011 mSDtfsCounter, 5865 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5868 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:08,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5868 Valid, 3925 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.62834008097166) internal successors, (2011), 1235 states have internal predecessors, (2011), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2017 transitions. [2022-11-16 11:06:08,857 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2017 transitions. Word has length 328 [2022-11-16 11:06:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:08,858 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2017 transitions. [2022-11-16 11:06:08,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2017 transitions. [2022-11-16 11:06:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-16 11:06:08,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:08,861 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:08,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 11:06:08,862 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1081877598, now seen corresponding path program 1 times [2022-11-16 11:06:08,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:08,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302115727] [2022-11-16 11:06:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:09,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302115727] [2022-11-16 11:06:09,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302115727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:09,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:09,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:09,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555786194] [2022-11-16 11:06:09,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:09,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:09,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:09,475 INFO L87 Difference]: Start difference. First operand 1240 states and 2017 transitions. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:09,914 INFO L93 Difference]: Finished difference Result 3710 states and 6040 transitions. [2022-11-16 11:06:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 329 [2022-11-16 11:06:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:09,918 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:09,918 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:09,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:09,920 INFO L413 NwaCegarLoop]: 2012 mSDtfsCounter, 5858 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5861 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:09,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5861 Valid, 3926 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6275303643724697) internal successors, (2010), 1235 states have internal predecessors, (2010), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2016 transitions. [2022-11-16 11:06:09,951 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2016 transitions. Word has length 329 [2022-11-16 11:06:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:09,952 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2016 transitions. [2022-11-16 11:06:09,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2016 transitions. [2022-11-16 11:06:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-16 11:06:09,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:09,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:09,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 11:06:09,957 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1975635432, now seen corresponding path program 1 times [2022-11-16 11:06:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:09,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90561639] [2022-11-16 11:06:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:10,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90561639] [2022-11-16 11:06:10,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90561639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:10,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:10,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:10,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769459006] [2022-11-16 11:06:10,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:10,661 INFO L87 Difference]: Start difference. First operand 1240 states and 2016 transitions. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:11,109 INFO L93 Difference]: Finished difference Result 3710 states and 6037 transitions. [2022-11-16 11:06:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 330 [2022-11-16 11:06:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:11,113 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:11,113 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:11,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:11,115 INFO L413 NwaCegarLoop]: 2013 mSDtfsCounter, 9598 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9601 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:11,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9601 Valid, 3917 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:11,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6267206477732794) internal successors, (2009), 1235 states have internal predecessors, (2009), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2015 transitions. [2022-11-16 11:06:11,153 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2015 transitions. Word has length 330 [2022-11-16 11:06:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:11,154 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2015 transitions. [2022-11-16 11:06:11,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2015 transitions. [2022-11-16 11:06:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-11-16 11:06:11,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:11,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-16 11:06:11,159 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2009975096, now seen corresponding path program 1 times [2022-11-16 11:06:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:11,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13672111] [2022-11-16 11:06:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:11,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:11,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:11,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13672111] [2022-11-16 11:06:11,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13672111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:11,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:11,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310503368] [2022-11-16 11:06:11,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:11,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:11,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:11,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:11,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:11,898 INFO L87 Difference]: Start difference. First operand 1240 states and 2015 transitions. Second operand has 5 states, 5 states have (on average 63.8) internal successors, (319), 5 states have internal predecessors, (319), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:12,361 INFO L93 Difference]: Finished difference Result 3710 states and 6034 transitions. [2022-11-16 11:06:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.8) internal successors, (319), 5 states have internal predecessors, (319), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 331 [2022-11-16 11:06:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:12,364 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:12,365 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:12,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:12,367 INFO L413 NwaCegarLoop]: 2014 mSDtfsCounter, 5844 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5847 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:12,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5847 Valid, 3928 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6259109311740891) internal successors, (2008), 1235 states have internal predecessors, (2008), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:12,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2014 transitions. [2022-11-16 11:06:12,402 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2014 transitions. Word has length 331 [2022-11-16 11:06:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:12,403 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2014 transitions. [2022-11-16 11:06:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.8) internal successors, (319), 5 states have internal predecessors, (319), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2014 transitions. [2022-11-16 11:06:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-16 11:06:12,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:12,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:12,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-16 11:06:12,407 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash -28953090, now seen corresponding path program 1 times [2022-11-16 11:06:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844210682] [2022-11-16 11:06:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844210682] [2022-11-16 11:06:13,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844210682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:13,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:13,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686125834] [2022-11-16 11:06:13,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:13,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:13,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:13,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:13,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:13,071 INFO L87 Difference]: Start difference. First operand 1240 states and 2014 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:13,538 INFO L93 Difference]: Finished difference Result 3710 states and 6031 transitions. [2022-11-16 11:06:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 332 [2022-11-16 11:06:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:13,541 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:13,542 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:13,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:13,544 INFO L413 NwaCegarLoop]: 2015 mSDtfsCounter, 5837 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5840 SdHoareTripleChecker+Valid, 3929 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:13,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5840 Valid, 3929 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6251012145748989) internal successors, (2007), 1235 states have internal predecessors, (2007), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2013 transitions. [2022-11-16 11:06:13,581 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2013 transitions. Word has length 332 [2022-11-16 11:06:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:13,582 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2013 transitions. [2022-11-16 11:06:13,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2013 transitions. [2022-11-16 11:06:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-16 11:06:13,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:13,585 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:13,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-16 11:06:13,586 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 921160942, now seen corresponding path program 1 times [2022-11-16 11:06:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:13,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343371309] [2022-11-16 11:06:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:14,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:14,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343371309] [2022-11-16 11:06:14,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343371309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:14,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:14,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416944623] [2022-11-16 11:06:14,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:14,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:14,401 INFO L87 Difference]: Start difference. First operand 1240 states and 2013 transitions. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:14,926 INFO L93 Difference]: Finished difference Result 3710 states and 6028 transitions. [2022-11-16 11:06:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:14,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 333 [2022-11-16 11:06:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:14,930 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:14,930 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:14,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:14,934 INFO L413 NwaCegarLoop]: 2016 mSDtfsCounter, 9550 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9553 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:14,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9553 Valid, 3920 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:06:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6242914979757086) internal successors, (2006), 1235 states have internal predecessors, (2006), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2012 transitions. [2022-11-16 11:06:14,971 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2012 transitions. Word has length 333 [2022-11-16 11:06:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:14,972 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2012 transitions. [2022-11-16 11:06:14,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2012 transitions. [2022-11-16 11:06:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:14,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:14,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:14,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-16 11:06:14,976 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash 117400804, now seen corresponding path program 1 times [2022-11-16 11:06:14,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:14,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394615780] [2022-11-16 11:06:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:14,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:15,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:15,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394615780] [2022-11-16 11:06:15,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394615780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:15,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:15,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:15,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029398108] [2022-11-16 11:06:15,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:15,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:15,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:15,863 INFO L87 Difference]: Start difference. First operand 1240 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:16,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:16,157 INFO L93 Difference]: Finished difference Result 2478 states and 4022 transitions. [2022-11-16 11:06:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:16,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:16,159 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:16,159 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:16,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:16,162 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1887 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:16,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 3794 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:06:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:16,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:16,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6234817813765183) internal successors, (2005), 1235 states have internal predecessors, (2005), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2011 transitions. [2022-11-16 11:06:16,193 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2011 transitions. Word has length 334 [2022-11-16 11:06:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:16,194 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2011 transitions. [2022-11-16 11:06:16,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2011 transitions. [2022-11-16 11:06:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:16,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:16,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:16,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-16 11:06:16,198 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:16,198 INFO L85 PathProgramCache]: Analyzing trace with hash -750526558, now seen corresponding path program 1 times [2022-11-16 11:06:16,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:16,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941253576] [2022-11-16 11:06:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:16,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:16,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:16,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941253576] [2022-11-16 11:06:16,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941253576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:16,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:16,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663222179] [2022-11-16 11:06:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:16,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:16,949 INFO L87 Difference]: Start difference. First operand 1240 states and 2011 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:17,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:17,222 INFO L93 Difference]: Finished difference Result 2478 states and 4020 transitions. [2022-11-16 11:06:17,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:17,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:17,224 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:17,224 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:17,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:17,227 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1889 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:17,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 3794 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6226720647773278) internal successors, (2004), 1235 states have internal predecessors, (2004), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2010 transitions. [2022-11-16 11:06:17,249 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2010 transitions. Word has length 334 [2022-11-16 11:06:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:17,249 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2010 transitions. [2022-11-16 11:06:17,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:17,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2010 transitions. [2022-11-16 11:06:17,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:17,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:17,253 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:17,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-16 11:06:17,253 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1471445980, now seen corresponding path program 1 times [2022-11-16 11:06:17,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:17,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023167958] [2022-11-16 11:06:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:18,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:18,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023167958] [2022-11-16 11:06:18,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023167958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:18,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:18,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923918211] [2022-11-16 11:06:18,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:18,105 INFO L87 Difference]: Start difference. First operand 1240 states and 2010 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:18,394 INFO L93 Difference]: Finished difference Result 2478 states and 4018 transitions. [2022-11-16 11:06:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:18,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:18,396 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:18,396 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:18,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:18,398 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1891 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:18,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 3794 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6218623481781376) internal successors, (2003), 1235 states have internal predecessors, (2003), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2009 transitions. [2022-11-16 11:06:18,428 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2009 transitions. Word has length 334 [2022-11-16 11:06:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:18,428 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2009 transitions. [2022-11-16 11:06:18,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2009 transitions. [2022-11-16 11:06:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:18,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:18,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:18,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-16 11:06:18,432 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:18,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash 749500514, now seen corresponding path program 1 times [2022-11-16 11:06:18,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:18,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024279453] [2022-11-16 11:06:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:18,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:19,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:19,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024279453] [2022-11-16 11:06:19,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024279453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:19,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:19,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729571061] [2022-11-16 11:06:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:19,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:19,115 INFO L87 Difference]: Start difference. First operand 1240 states and 2009 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:19,427 INFO L93 Difference]: Finished difference Result 2478 states and 4016 transitions. [2022-11-16 11:06:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:19,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:19,430 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:19,430 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:19,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:19,432 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1893 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:19,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1893 Valid, 3794 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:06:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6210526315789473) internal successors, (2002), 1235 states have internal predecessors, (2002), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2008 transitions. [2022-11-16 11:06:19,458 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2008 transitions. Word has length 334 [2022-11-16 11:06:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:19,458 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2008 transitions. [2022-11-16 11:06:19,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2008 transitions. [2022-11-16 11:06:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:19,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:19,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:19,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-16 11:06:19,461 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 995308388, now seen corresponding path program 1 times [2022-11-16 11:06:19,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:19,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145943556] [2022-11-16 11:06:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:19,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:20,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:20,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145943556] [2022-11-16 11:06:20,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145943556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:20,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:20,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266389137] [2022-11-16 11:06:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:20,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:20,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:20,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:20,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:20,345 INFO L87 Difference]: Start difference. First operand 1240 states and 2008 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:20,664 INFO L93 Difference]: Finished difference Result 2478 states and 4014 transitions. [2022-11-16 11:06:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:20,666 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:20,667 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:20,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:20,669 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1895 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:20,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 3794 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:06:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.620242914979757) internal successors, (2001), 1235 states have internal predecessors, (2001), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2007 transitions. [2022-11-16 11:06:20,697 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2007 transitions. Word has length 334 [2022-11-16 11:06:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:20,698 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2007 transitions. [2022-11-16 11:06:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2007 transitions. [2022-11-16 11:06:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:20,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:20,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:20,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-16 11:06:20,702 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash 938443042, now seen corresponding path program 1 times [2022-11-16 11:06:20,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:20,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962092024] [2022-11-16 11:06:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:21,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962092024] [2022-11-16 11:06:21,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962092024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:21,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:21,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253221763] [2022-11-16 11:06:21,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:21,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:21,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:21,382 INFO L87 Difference]: Start difference. First operand 1240 states and 2007 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:21,657 INFO L93 Difference]: Finished difference Result 2478 states and 4012 transitions. [2022-11-16 11:06:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:21,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:21,659 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:21,659 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:21,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:21,660 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1897 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:21,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 3794 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6194331983805668) internal successors, (2000), 1235 states have internal predecessors, (2000), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2006 transitions. [2022-11-16 11:06:21,683 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2006 transitions. Word has length 334 [2022-11-16 11:06:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:21,683 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2006 transitions. [2022-11-16 11:06:21,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2006 transitions. [2022-11-16 11:06:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:21,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:21,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:21,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-16 11:06:21,686 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:21,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash -919965020, now seen corresponding path program 1 times [2022-11-16 11:06:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:21,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448082934] [2022-11-16 11:06:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:22,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448082934] [2022-11-16 11:06:22,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448082934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:22,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:22,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:22,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88214554] [2022-11-16 11:06:22,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:22,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:22,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:22,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:22,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:22,431 INFO L87 Difference]: Start difference. First operand 1240 states and 2006 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:22,741 INFO L93 Difference]: Finished difference Result 2478 states and 4010 transitions. [2022-11-16 11:06:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:22,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:22,743 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:22,744 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:22,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:22,746 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1899 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:22,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 3794 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:06:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6186234817813765) internal successors, (1999), 1235 states have internal predecessors, (1999), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2005 transitions. [2022-11-16 11:06:22,775 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2005 transitions. Word has length 334 [2022-11-16 11:06:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:22,775 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2005 transitions. [2022-11-16 11:06:22,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2005 transitions. [2022-11-16 11:06:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:22,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:22,779 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:22,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-16 11:06:22,779 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1668872674, now seen corresponding path program 1 times [2022-11-16 11:06:22,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:22,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053129790] [2022-11-16 11:06:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:22,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:23,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:23,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053129790] [2022-11-16 11:06:23,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053129790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:23,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:23,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:23,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044301856] [2022-11-16 11:06:23,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:23,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:23,653 INFO L87 Difference]: Start difference. First operand 1240 states and 2005 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:23,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:23,924 INFO L93 Difference]: Finished difference Result 2478 states and 4008 transitions. [2022-11-16 11:06:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:23,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:23,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:23,926 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:23,926 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:23,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:23,928 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1901 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:23,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 3794 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:23,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6178137651821862) internal successors, (1998), 1235 states have internal predecessors, (1998), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2004 transitions. [2022-11-16 11:06:23,950 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2004 transitions. Word has length 334 [2022-11-16 11:06:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:23,951 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2004 transitions. [2022-11-16 11:06:23,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:23,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2004 transitions. [2022-11-16 11:06:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:23,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:23,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:23,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-16 11:06:23,953 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1004880356, now seen corresponding path program 1 times [2022-11-16 11:06:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:23,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530408712] [2022-11-16 11:06:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:23,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:24,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:24,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530408712] [2022-11-16 11:06:24,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530408712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:24,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:24,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699376494] [2022-11-16 11:06:24,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:24,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:24,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:24,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:24,637 INFO L87 Difference]: Start difference. First operand 1240 states and 2004 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:24,909 INFO L93 Difference]: Finished difference Result 2478 states and 4006 transitions. [2022-11-16 11:06:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:24,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:24,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:24,912 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:24,912 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:24,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:24,913 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1903 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:24,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 3794 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.617004048582996) internal successors, (1997), 1235 states have internal predecessors, (1997), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2003 transitions. [2022-11-16 11:06:24,935 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2003 transitions. Word has length 334 [2022-11-16 11:06:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:24,936 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2003 transitions. [2022-11-16 11:06:24,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2003 transitions. [2022-11-16 11:06:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:24,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:24,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-16 11:06:24,940 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:24,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1665867102, now seen corresponding path program 1 times [2022-11-16 11:06:24,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:24,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513819133] [2022-11-16 11:06:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:25,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:25,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513819133] [2022-11-16 11:06:25,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513819133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:25,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:25,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:25,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326737356] [2022-11-16 11:06:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:25,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:25,603 INFO L87 Difference]: Start difference. First operand 1240 states and 2003 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:25,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:25,873 INFO L93 Difference]: Finished difference Result 2478 states and 4004 transitions. [2022-11-16 11:06:25,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:25,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:25,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:25,876 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:25,876 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:25,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:25,878 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1905 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:25,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1905 Valid, 3794 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6161943319838057) internal successors, (1996), 1235 states have internal predecessors, (1996), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2002 transitions. [2022-11-16 11:06:25,899 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2002 transitions. Word has length 334 [2022-11-16 11:06:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:25,900 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2002 transitions. [2022-11-16 11:06:25,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2002 transitions. [2022-11-16 11:06:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:25,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:25,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:25,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-16 11:06:25,904 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1634229980, now seen corresponding path program 1 times [2022-11-16 11:06:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:25,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850069463] [2022-11-16 11:06:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:26,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850069463] [2022-11-16 11:06:26,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850069463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:26,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:26,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888449363] [2022-11-16 11:06:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:26,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:26,597 INFO L87 Difference]: Start difference. First operand 1240 states and 2002 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:26,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:26,870 INFO L93 Difference]: Finished difference Result 2478 states and 4002 transitions. [2022-11-16 11:06:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:26,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:26,872 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:26,872 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:26,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:26,874 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1907 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:26,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 3794 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:26,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6153846153846154) internal successors, (1995), 1235 states have internal predecessors, (1995), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2001 transitions. [2022-11-16 11:06:26,894 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2001 transitions. Word has length 334 [2022-11-16 11:06:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:26,894 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2001 transitions. [2022-11-16 11:06:26,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2001 transitions. [2022-11-16 11:06:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:26,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:26,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:26,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-16 11:06:26,897 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:26,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash 269433698, now seen corresponding path program 1 times [2022-11-16 11:06:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:26,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254513563] [2022-11-16 11:06:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:27,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254513563] [2022-11-16 11:06:27,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254513563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:27,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:27,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075997058] [2022-11-16 11:06:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:27,538 INFO L87 Difference]: Start difference. First operand 1240 states and 2001 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:27,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:27,800 INFO L93 Difference]: Finished difference Result 2478 states and 4000 transitions. [2022-11-16 11:06:27,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:27,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:27,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:27,802 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:27,802 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:27,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:27,804 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1909 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:27,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 3794 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:27,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6145748987854251) internal successors, (1994), 1235 states have internal predecessors, (1994), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2000 transitions. [2022-11-16 11:06:27,830 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2000 transitions. Word has length 334 [2022-11-16 11:06:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:27,831 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2000 transitions. [2022-11-16 11:06:27,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2000 transitions. [2022-11-16 11:06:27,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:27,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:27,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:27,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-16 11:06:27,834 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1565888612, now seen corresponding path program 1 times [2022-11-16 11:06:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:27,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548435263] [2022-11-16 11:06:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:28,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:28,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548435263] [2022-11-16 11:06:28,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548435263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:28,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:28,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:28,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107169064] [2022-11-16 11:06:28,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:28,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:28,527 INFO L87 Difference]: Start difference. First operand 1240 states and 2000 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:28,783 INFO L93 Difference]: Finished difference Result 2478 states and 3998 transitions. [2022-11-16 11:06:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:28,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:28,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:28,786 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:28,786 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:28,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:28,788 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1911 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:28,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 3794 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6137651821862349) internal successors, (1993), 1235 states have internal predecessors, (1993), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1999 transitions. [2022-11-16 11:06:28,818 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1999 transitions. Word has length 334 [2022-11-16 11:06:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:28,819 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1999 transitions. [2022-11-16 11:06:28,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1999 transitions. [2022-11-16 11:06:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:28,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:28,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:28,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-16 11:06:28,823 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash -386661342, now seen corresponding path program 1 times [2022-11-16 11:06:28,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:28,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744442746] [2022-11-16 11:06:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:29,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:29,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744442746] [2022-11-16 11:06:29,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744442746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:29,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:29,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718691498] [2022-11-16 11:06:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:29,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:29,441 INFO L87 Difference]: Start difference. First operand 1240 states and 1999 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:29,730 INFO L93 Difference]: Finished difference Result 2478 states and 3996 transitions. [2022-11-16 11:06:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:29,737 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:29,737 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:29,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:29,738 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1913 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:29,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 3794 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6129554655870446) internal successors, (1992), 1235 states have internal predecessors, (1992), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1998 transitions. [2022-11-16 11:06:29,768 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1998 transitions. Word has length 334 [2022-11-16 11:06:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:29,769 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1998 transitions. [2022-11-16 11:06:29,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1998 transitions. [2022-11-16 11:06:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:29,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:29,772 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:29,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-16 11:06:29,772 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2060251228, now seen corresponding path program 1 times [2022-11-16 11:06:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:29,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000942778] [2022-11-16 11:06:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:29,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:30,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:30,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000942778] [2022-11-16 11:06:30,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000942778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:30,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:30,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:30,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230332286] [2022-11-16 11:06:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:30,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:30,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:30,573 INFO L87 Difference]: Start difference. First operand 1240 states and 1998 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:30,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:30,842 INFO L93 Difference]: Finished difference Result 2478 states and 3994 transitions. [2022-11-16 11:06:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:30,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:30,844 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:06:30,844 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:06:30,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:30,846 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1915 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:30,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 3794 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:06:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:06:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6121457489878543) internal successors, (1991), 1235 states have internal predecessors, (1991), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1997 transitions. [2022-11-16 11:06:30,865 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1997 transitions. Word has length 334 [2022-11-16 11:06:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:30,866 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1997 transitions. [2022-11-16 11:06:30,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1997 transitions. [2022-11-16 11:06:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 11:06:30,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:30,870 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:30,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-16 11:06:30,871 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:30,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:30,871 INFO L85 PathProgramCache]: Analyzing trace with hash 298794210, now seen corresponding path program 1 times [2022-11-16 11:06:30,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:30,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111437355] [2022-11-16 11:06:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:30,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:31,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:31,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111437355] [2022-11-16 11:06:31,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111437355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:31,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:31,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:06:31,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578708708] [2022-11-16 11:06:31,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:31,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:06:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:31,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:06:31,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:06:31,645 INFO L87 Difference]: Start difference. First operand 1240 states and 1997 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:32,430 INFO L93 Difference]: Finished difference Result 3710 states and 5980 transitions. [2022-11-16 11:06:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:32,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 334 [2022-11-16 11:06:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:32,433 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:32,433 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:32,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:32,435 INFO L413 NwaCegarLoop]: 1891 mSDtfsCounter, 5676 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5676 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:32,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5676 Valid, 3636 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.611336032388664) internal successors, (1990), 1235 states have internal predecessors, (1990), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1996 transitions. [2022-11-16 11:06:32,462 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1996 transitions. Word has length 334 [2022-11-16 11:06:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:32,462 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1996 transitions. [2022-11-16 11:06:32,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1996 transitions. [2022-11-16 11:06:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-16 11:06:32,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:32,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:32,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-16 11:06:32,466 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:32,467 INFO L85 PathProgramCache]: Analyzing trace with hash 479675862, now seen corresponding path program 1 times [2022-11-16 11:06:32,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:32,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985998385] [2022-11-16 11:06:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:33,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985998385] [2022-11-16 11:06:33,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985998385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:33,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:33,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921325262] [2022-11-16 11:06:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:33,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:33,030 INFO L87 Difference]: Start difference. First operand 1240 states and 1996 transitions. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:33,831 INFO L93 Difference]: Finished difference Result 3710 states and 5977 transitions. [2022-11-16 11:06:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 335 [2022-11-16 11:06:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:33,834 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:33,834 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:33,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:33,836 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 9473 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9476 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:33,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9476 Valid, 3637 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6105263157894736) internal successors, (1989), 1235 states have internal predecessors, (1989), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1995 transitions. [2022-11-16 11:06:33,862 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1995 transitions. Word has length 335 [2022-11-16 11:06:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:33,863 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1995 transitions. [2022-11-16 11:06:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1995 transitions. [2022-11-16 11:06:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-11-16 11:06:33,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:33,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:33,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-16 11:06:33,866 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1597968200, now seen corresponding path program 1 times [2022-11-16 11:06:33,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:33,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539376317] [2022-11-16 11:06:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:34,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:34,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539376317] [2022-11-16 11:06:34,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539376317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:34,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:34,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604300809] [2022-11-16 11:06:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:34,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:34,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:34,438 INFO L87 Difference]: Start difference. First operand 1240 states and 1995 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:35,233 INFO L93 Difference]: Finished difference Result 3710 states and 5974 transitions. [2022-11-16 11:06:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 336 [2022-11-16 11:06:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:35,237 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:35,237 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:35,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:35,240 INFO L413 NwaCegarLoop]: 1893 mSDtfsCounter, 9457 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9460 SdHoareTripleChecker+Valid, 3638 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:35,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9460 Valid, 3638 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:35,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6097165991902833) internal successors, (1988), 1235 states have internal predecessors, (1988), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1994 transitions. [2022-11-16 11:06:35,269 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1994 transitions. Word has length 336 [2022-11-16 11:06:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:35,269 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1994 transitions. [2022-11-16 11:06:35,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1994 transitions. [2022-11-16 11:06:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-16 11:06:35,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:35,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:35,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-16 11:06:35,272 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:35,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:35,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1715017348, now seen corresponding path program 1 times [2022-11-16 11:06:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:35,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037701155] [2022-11-16 11:06:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:35,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:35,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:35,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037701155] [2022-11-16 11:06:35,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037701155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:35,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:35,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535526984] [2022-11-16 11:06:35,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:35,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:35,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:35,940 INFO L87 Difference]: Start difference. First operand 1240 states and 1994 transitions. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:36,730 INFO L93 Difference]: Finished difference Result 3710 states and 5971 transitions. [2022-11-16 11:06:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:36,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 337 [2022-11-16 11:06:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:36,734 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:36,734 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:36,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:36,736 INFO L413 NwaCegarLoop]: 1894 mSDtfsCounter, 9441 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9444 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:36,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9444 Valid, 3639 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.608906882591093) internal successors, (1987), 1235 states have internal predecessors, (1987), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1993 transitions. [2022-11-16 11:06:36,768 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1993 transitions. Word has length 337 [2022-11-16 11:06:36,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:36,768 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1993 transitions. [2022-11-16 11:06:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1993 transitions. [2022-11-16 11:06:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 11:06:36,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:36,771 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:36,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-16 11:06:36,771 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:36,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:36,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1446702254, now seen corresponding path program 1 times [2022-11-16 11:06:36,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:36,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578733092] [2022-11-16 11:06:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:36,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:37,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:37,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578733092] [2022-11-16 11:06:37,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578733092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:37,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:37,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512918279] [2022-11-16 11:06:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:37,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:37,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:37,437 INFO L87 Difference]: Start difference. First operand 1240 states and 1993 transitions. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:38,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:38,238 INFO L93 Difference]: Finished difference Result 3710 states and 5968 transitions. [2022-11-16 11:06:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:38,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 338 [2022-11-16 11:06:38,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:38,242 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:38,242 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:38,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:38,244 INFO L413 NwaCegarLoop]: 1895 mSDtfsCounter, 5765 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5768 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:38,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5768 Valid, 3650 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6080971659919028) internal successors, (1986), 1235 states have internal predecessors, (1986), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1992 transitions. [2022-11-16 11:06:38,273 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1992 transitions. Word has length 338 [2022-11-16 11:06:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:38,273 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1992 transitions. [2022-11-16 11:06:38,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:38,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1992 transitions. [2022-11-16 11:06:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-16 11:06:38,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:38,276 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:38,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-16 11:06:38,276 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -215193566, now seen corresponding path program 1 times [2022-11-16 11:06:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:38,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627341431] [2022-11-16 11:06:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:38,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627341431] [2022-11-16 11:06:38,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627341431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:38,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:38,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949515506] [2022-11-16 11:06:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:38,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:38,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:38,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:38,831 INFO L87 Difference]: Start difference. First operand 1240 states and 1992 transitions. Second operand has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:39,701 INFO L93 Difference]: Finished difference Result 3710 states and 5965 transitions. [2022-11-16 11:06:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:39,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 339 [2022-11-16 11:06:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:39,704 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:39,704 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:39,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:39,706 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 9409 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9412 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:39,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9412 Valid, 3641 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:06:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6072874493927125) internal successors, (1985), 1235 states have internal predecessors, (1985), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1991 transitions. [2022-11-16 11:06:39,731 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1991 transitions. Word has length 339 [2022-11-16 11:06:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:39,732 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1991 transitions. [2022-11-16 11:06:39,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1991 transitions. [2022-11-16 11:06:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-16 11:06:39,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:39,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:39,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-16 11:06:39,735 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:39,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1315329300, now seen corresponding path program 1 times [2022-11-16 11:06:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:39,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577988771] [2022-11-16 11:06:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:39,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:40,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577988771] [2022-11-16 11:06:40,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577988771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:40,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:40,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731362959] [2022-11-16 11:06:40,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:40,315 INFO L87 Difference]: Start difference. First operand 1240 states and 1991 transitions. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:41,137 INFO L93 Difference]: Finished difference Result 3710 states and 5962 transitions. [2022-11-16 11:06:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 340 [2022-11-16 11:06:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:41,140 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:41,140 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:41,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:41,142 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 9393 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9396 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:41,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9396 Valid, 3642 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:41,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6064777327935222) internal successors, (1984), 1235 states have internal predecessors, (1984), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1990 transitions. [2022-11-16 11:06:41,169 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1990 transitions. Word has length 340 [2022-11-16 11:06:41,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:41,169 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1990 transitions. [2022-11-16 11:06:41,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1990 transitions. [2022-11-16 11:06:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-16 11:06:41,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:41,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:41,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-16 11:06:41,172 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:41,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:41,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1455899080, now seen corresponding path program 1 times [2022-11-16 11:06:41,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:41,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394132608] [2022-11-16 11:06:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:41,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394132608] [2022-11-16 11:06:41,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394132608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:41,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:41,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947917276] [2022-11-16 11:06:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:41,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:41,952 INFO L87 Difference]: Start difference. First operand 1240 states and 1990 transitions. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:42,745 INFO L93 Difference]: Finished difference Result 3710 states and 5959 transitions. [2022-11-16 11:06:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 341 [2022-11-16 11:06:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:42,748 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:42,748 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:42,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:42,750 INFO L413 NwaCegarLoop]: 1898 mSDtfsCounter, 5744 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5747 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:42,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5747 Valid, 3653 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.605668016194332) internal successors, (1983), 1235 states have internal predecessors, (1983), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1989 transitions. [2022-11-16 11:06:42,777 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1989 transitions. Word has length 341 [2022-11-16 11:06:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:42,778 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1989 transitions. [2022-11-16 11:06:42,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1989 transitions. [2022-11-16 11:06:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-16 11:06:42,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:42,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:42,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-16 11:06:42,781 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash 463784058, now seen corresponding path program 1 times [2022-11-16 11:06:42,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411664923] [2022-11-16 11:06:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:42,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:43,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:43,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:43,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411664923] [2022-11-16 11:06:43,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411664923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:43,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:43,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:43,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564555549] [2022-11-16 11:06:43,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:43,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:43,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:43,398 INFO L87 Difference]: Start difference. First operand 1240 states and 1989 transitions. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:44,188 INFO L93 Difference]: Finished difference Result 3710 states and 5956 transitions. [2022-11-16 11:06:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 342 [2022-11-16 11:06:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:44,191 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:44,192 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:44,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:44,193 INFO L413 NwaCegarLoop]: 1899 mSDtfsCounter, 5737 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5740 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:44,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5740 Valid, 3654 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:44,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:44,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6048582995951417) internal successors, (1982), 1235 states have internal predecessors, (1982), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1988 transitions. [2022-11-16 11:06:44,223 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1988 transitions. Word has length 342 [2022-11-16 11:06:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:44,223 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1988 transitions. [2022-11-16 11:06:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1988 transitions. [2022-11-16 11:06:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-16 11:06:44,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:44,226 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:44,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-16 11:06:44,226 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:44,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1881737618, now seen corresponding path program 1 times [2022-11-16 11:06:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:44,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403384015] [2022-11-16 11:06:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:45,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403384015] [2022-11-16 11:06:45,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403384015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:45,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:45,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:45,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333962124] [2022-11-16 11:06:45,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:45,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:45,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:45,006 INFO L87 Difference]: Start difference. First operand 1240 states and 1988 transitions. Second operand has 5 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:45,790 INFO L93 Difference]: Finished difference Result 3710 states and 5953 transitions. [2022-11-16 11:06:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:45,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 343 [2022-11-16 11:06:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:45,794 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:45,794 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:45,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:45,796 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 9345 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9348 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:45,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9348 Valid, 3645 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6040485829959514) internal successors, (1981), 1235 states have internal predecessors, (1981), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1987 transitions. [2022-11-16 11:06:45,821 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1987 transitions. Word has length 343 [2022-11-16 11:06:45,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:45,822 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1987 transitions. [2022-11-16 11:06:45,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1987 transitions. [2022-11-16 11:06:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-16 11:06:45,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:45,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:45,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-16 11:06:45,824 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1910913312, now seen corresponding path program 1 times [2022-11-16 11:06:45,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:45,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087941863] [2022-11-16 11:06:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:45,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:46,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:46,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087941863] [2022-11-16 11:06:46,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087941863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:46,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:46,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:46,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658148440] [2022-11-16 11:06:46,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:46,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:46,379 INFO L87 Difference]: Start difference. First operand 1240 states and 1987 transitions. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:47,173 INFO L93 Difference]: Finished difference Result 3710 states and 5950 transitions. [2022-11-16 11:06:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:47,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 344 [2022-11-16 11:06:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:47,176 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:47,176 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:47,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:47,178 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 9329 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9332 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:47,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9332 Valid, 3646 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6032388663967612) internal successors, (1980), 1235 states have internal predecessors, (1980), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1986 transitions. [2022-11-16 11:06:47,206 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1986 transitions. Word has length 344 [2022-11-16 11:06:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:47,206 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1986 transitions. [2022-11-16 11:06:47,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1986 transitions. [2022-11-16 11:06:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-16 11:06:47,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:47,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:47,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-16 11:06:47,209 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1188759060, now seen corresponding path program 1 times [2022-11-16 11:06:47,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:47,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657967341] [2022-11-16 11:06:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:47,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:47,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:47,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657967341] [2022-11-16 11:06:47,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657967341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:47,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:47,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:47,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602679099] [2022-11-16 11:06:47,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:47,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:47,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:47,773 INFO L87 Difference]: Start difference. First operand 1240 states and 1986 transitions. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:48,560 INFO L93 Difference]: Finished difference Result 3710 states and 5947 transitions. [2022-11-16 11:06:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:48,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 345 [2022-11-16 11:06:48,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:48,564 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:48,564 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:48,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:48,566 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 9313 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9316 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:48,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9316 Valid, 3647 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:48,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.602429149797571) internal successors, (1979), 1235 states have internal predecessors, (1979), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1985 transitions. [2022-11-16 11:06:48,596 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1985 transitions. Word has length 345 [2022-11-16 11:06:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:48,596 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1985 transitions. [2022-11-16 11:06:48,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1985 transitions. [2022-11-16 11:06:48,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-16 11:06:48,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:48,599 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:48,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-16 11:06:48,600 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -232206266, now seen corresponding path program 1 times [2022-11-16 11:06:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:48,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23827019] [2022-11-16 11:06:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:49,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:49,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23827019] [2022-11-16 11:06:49,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23827019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:49,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:49,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655618459] [2022-11-16 11:06:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:49,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:49,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:49,223 INFO L87 Difference]: Start difference. First operand 1240 states and 1985 transitions. Second operand has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:50,004 INFO L93 Difference]: Finished difference Result 3710 states and 5944 transitions. [2022-11-16 11:06:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:50,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 346 [2022-11-16 11:06:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:50,008 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:50,008 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:50,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:50,010 INFO L413 NwaCegarLoop]: 1903 mSDtfsCounter, 9297 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9300 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:50,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9300 Valid, 3648 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6016194331983806) internal successors, (1978), 1235 states have internal predecessors, (1978), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1984 transitions. [2022-11-16 11:06:50,038 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1984 transitions. Word has length 346 [2022-11-16 11:06:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:50,038 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1984 transitions. [2022-11-16 11:06:50,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1984 transitions. [2022-11-16 11:06:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-16 11:06:50,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:50,041 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:50,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-16 11:06:50,041 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1100148922, now seen corresponding path program 1 times [2022-11-16 11:06:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:50,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371629722] [2022-11-16 11:06:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:50,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371629722] [2022-11-16 11:06:50,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371629722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:50,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:50,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:50,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965154106] [2022-11-16 11:06:50,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:50,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:50,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:50,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:50,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:50,598 INFO L87 Difference]: Start difference. First operand 1240 states and 1984 transitions. Second operand has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:51,383 INFO L93 Difference]: Finished difference Result 3710 states and 5941 transitions. [2022-11-16 11:06:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 347 [2022-11-16 11:06:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:51,387 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:51,387 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:51,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:51,389 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 9281 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9284 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:51,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9284 Valid, 3649 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:51,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6008097165991904) internal successors, (1977), 1235 states have internal predecessors, (1977), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1983 transitions. [2022-11-16 11:06:51,417 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1983 transitions. Word has length 347 [2022-11-16 11:06:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:51,417 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1983 transitions. [2022-11-16 11:06:51,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1983 transitions. [2022-11-16 11:06:51,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-16 11:06:51,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:51,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:51,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-16 11:06:51,421 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:51,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1871354708, now seen corresponding path program 1 times [2022-11-16 11:06:51,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:51,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944808800] [2022-11-16 11:06:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:51,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944808800] [2022-11-16 11:06:51,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944808800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:51,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:51,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380548385] [2022-11-16 11:06:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:51,993 INFO L87 Difference]: Start difference. First operand 1240 states and 1983 transitions. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:52,786 INFO L93 Difference]: Finished difference Result 3710 states and 5938 transitions. [2022-11-16 11:06:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:52,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 348 [2022-11-16 11:06:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:52,789 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:52,789 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:52,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:52,791 INFO L413 NwaCegarLoop]: 1905 mSDtfsCounter, 9265 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9268 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:52,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9268 Valid, 3650 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.6) internal successors, (1976), 1235 states have internal predecessors, (1976), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1982 transitions. [2022-11-16 11:06:52,818 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1982 transitions. Word has length 348 [2022-11-16 11:06:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:52,819 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1982 transitions. [2022-11-16 11:06:52,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1982 transitions. [2022-11-16 11:06:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-11-16 11:06:52,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:52,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:52,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-16 11:06:52,822 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:52,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1560398240, now seen corresponding path program 1 times [2022-11-16 11:06:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:52,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375652462] [2022-11-16 11:06:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:53,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375652462] [2022-11-16 11:06:53,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375652462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:53,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:53,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137772725] [2022-11-16 11:06:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:53,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:53,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:53,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:53,385 INFO L87 Difference]: Start difference. First operand 1240 states and 1982 transitions. Second operand has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:54,184 INFO L93 Difference]: Finished difference Result 3710 states and 5935 transitions. [2022-11-16 11:06:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:54,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 349 [2022-11-16 11:06:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:54,188 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:54,189 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:54,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:54,191 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 9249 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9252 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:54,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9252 Valid, 3651 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5991902834008098) internal successors, (1975), 1235 states have internal predecessors, (1975), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1981 transitions. [2022-11-16 11:06:54,232 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1981 transitions. Word has length 349 [2022-11-16 11:06:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:54,233 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1981 transitions. [2022-11-16 11:06:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1981 transitions. [2022-11-16 11:06:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-11-16 11:06:54,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:54,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:54,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-16 11:06:54,237 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash 769852434, now seen corresponding path program 1 times [2022-11-16 11:06:54,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:54,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052399800] [2022-11-16 11:06:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:54,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:54,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:54,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052399800] [2022-11-16 11:06:54,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052399800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:54,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:54,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:54,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330017805] [2022-11-16 11:06:54,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:54,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:54,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:54,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:54,948 INFO L87 Difference]: Start difference. First operand 1240 states and 1981 transitions. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:55,723 INFO L93 Difference]: Finished difference Result 3710 states and 5932 transitions. [2022-11-16 11:06:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:55,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 350 [2022-11-16 11:06:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:55,726 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:55,727 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:55,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:55,729 INFO L413 NwaCegarLoop]: 1907 mSDtfsCounter, 9233 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9236 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:55,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9236 Valid, 3652 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:55,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5983805668016193) internal successors, (1974), 1235 states have internal predecessors, (1974), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1980 transitions. [2022-11-16 11:06:55,755 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1980 transitions. Word has length 350 [2022-11-16 11:06:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:55,755 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1980 transitions. [2022-11-16 11:06:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:55,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1980 transitions. [2022-11-16 11:06:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-16 11:06:55,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:55,758 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:55,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-16 11:06:55,758 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash 727471878, now seen corresponding path program 1 times [2022-11-16 11:06:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:55,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484702090] [2022-11-16 11:06:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:56,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:56,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484702090] [2022-11-16 11:06:56,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484702090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:56,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:56,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:56,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941250230] [2022-11-16 11:06:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:56,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:56,319 INFO L87 Difference]: Start difference. First operand 1240 states and 1980 transitions. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:57,087 INFO L93 Difference]: Finished difference Result 3710 states and 5929 transitions. [2022-11-16 11:06:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 351 [2022-11-16 11:06:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:57,091 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:57,091 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:57,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:57,093 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 5674 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5677 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:57,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5677 Valid, 3663 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.597570850202429) internal successors, (1973), 1235 states have internal predecessors, (1973), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1979 transitions. [2022-11-16 11:06:57,121 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1979 transitions. Word has length 351 [2022-11-16 11:06:57,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:57,121 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1979 transitions. [2022-11-16 11:06:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1979 transitions. [2022-11-16 11:06:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-16 11:06:57,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:57,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:57,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-16 11:06:57,124 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1953157512, now seen corresponding path program 1 times [2022-11-16 11:06:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:57,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380406639] [2022-11-16 11:06:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:57,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380406639] [2022-11-16 11:06:57,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380406639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:57,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:57,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938773689] [2022-11-16 11:06:57,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:57,686 INFO L87 Difference]: Start difference. First operand 1240 states and 1979 transitions. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:58,464 INFO L93 Difference]: Finished difference Result 3710 states and 5926 transitions. [2022-11-16 11:06:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:58,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 352 [2022-11-16 11:06:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:58,468 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:58,468 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:58,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:58,470 INFO L413 NwaCegarLoop]: 1909 mSDtfsCounter, 5667 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5670 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:58,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5670 Valid, 3664 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5967611336032388) internal successors, (1972), 1235 states have internal predecessors, (1972), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1978 transitions. [2022-11-16 11:06:58,498 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1978 transitions. Word has length 352 [2022-11-16 11:06:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:58,498 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1978 transitions. [2022-11-16 11:06:58,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:58,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1978 transitions. [2022-11-16 11:06:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-16 11:06:58,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:58,500 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:58,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-16 11:06:58,501 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:58,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2016203436, now seen corresponding path program 1 times [2022-11-16 11:06:58,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:58,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315151798] [2022-11-16 11:06:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:06:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:06:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:06:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:59,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315151798] [2022-11-16 11:06:59,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315151798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:59,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:59,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:06:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777547005] [2022-11-16 11:06:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:59,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:06:59,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:06:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:06:59,086 INFO L87 Difference]: Start difference. First operand 1240 states and 1978 transitions. Second operand has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:59,852 INFO L93 Difference]: Finished difference Result 3710 states and 5923 transitions. [2022-11-16 11:06:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:06:59,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 353 [2022-11-16 11:06:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:59,855 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:06:59,855 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:06:59,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:06:59,857 INFO L413 NwaCegarLoop]: 1910 mSDtfsCounter, 5660 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5663 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:59,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5663 Valid, 3665 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:06:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:06:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:06:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5959514170040485) internal successors, (1971), 1235 states have internal predecessors, (1971), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:06:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1977 transitions. [2022-11-16 11:06:59,885 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1977 transitions. Word has length 353 [2022-11-16 11:06:59,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:59,885 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1977 transitions. [2022-11-16 11:06:59,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:06:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1977 transitions. [2022-11-16 11:06:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-16 11:06:59,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:59,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:59,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-16 11:06:59,888 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:59,889 INFO L85 PathProgramCache]: Analyzing trace with hash -420518946, now seen corresponding path program 1 times [2022-11-16 11:06:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:59,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492197949] [2022-11-16 11:06:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:00,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:00,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492197949] [2022-11-16 11:07:00,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492197949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:00,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:00,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60410757] [2022-11-16 11:07:00,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:00,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:00,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:00,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:00,521 INFO L87 Difference]: Start difference. First operand 1240 states and 1977 transitions. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:01,299 INFO L93 Difference]: Finished difference Result 3710 states and 5920 transitions. [2022-11-16 11:07:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 354 [2022-11-16 11:07:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:01,303 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:01,303 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:01,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:01,305 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 9169 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9172 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:01,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9172 Valid, 3656 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5951417004048583) internal successors, (1970), 1235 states have internal predecessors, (1970), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1976 transitions. [2022-11-16 11:07:01,348 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1976 transitions. Word has length 354 [2022-11-16 11:07:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:01,349 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1976 transitions. [2022-11-16 11:07:01,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1976 transitions. [2022-11-16 11:07:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-16 11:07:01,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:01,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:01,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-16 11:07:01,353 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:01,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1143941458, now seen corresponding path program 1 times [2022-11-16 11:07:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:01,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317460419] [2022-11-16 11:07:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:01,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:01,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317460419] [2022-11-16 11:07:01,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317460419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:01,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:01,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:01,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325927499] [2022-11-16 11:07:01,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:01,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:01,929 INFO L87 Difference]: Start difference. First operand 1240 states and 1976 transitions. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:02,695 INFO L93 Difference]: Finished difference Result 3710 states and 5917 transitions. [2022-11-16 11:07:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:02,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 355 [2022-11-16 11:07:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:02,698 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:02,699 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:02,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:02,700 INFO L413 NwaCegarLoop]: 1912 mSDtfsCounter, 9153 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9156 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:02,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9156 Valid, 3657 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.594331983805668) internal successors, (1969), 1235 states have internal predecessors, (1969), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1975 transitions. [2022-11-16 11:07:02,741 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1975 transitions. Word has length 355 [2022-11-16 11:07:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:02,742 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1975 transitions. [2022-11-16 11:07:02,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1975 transitions. [2022-11-16 11:07:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-16 11:07:02,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:02,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:02,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-16 11:07:02,746 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2039817284, now seen corresponding path program 1 times [2022-11-16 11:07:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:02,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200825259] [2022-11-16 11:07:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:02,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:03,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:03,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200825259] [2022-11-16 11:07:03,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200825259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:03,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:03,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552672538] [2022-11-16 11:07:03,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:03,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:03,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:03,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:03,325 INFO L87 Difference]: Start difference. First operand 1240 states and 1975 transitions. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:04,097 INFO L93 Difference]: Finished difference Result 3710 states and 5914 transitions. [2022-11-16 11:07:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:04,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 356 [2022-11-16 11:07:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:04,100 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:04,100 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:04,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:04,102 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 5639 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5642 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:04,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5642 Valid, 3668 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5935222672064777) internal successors, (1968), 1235 states have internal predecessors, (1968), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1974 transitions. [2022-11-16 11:07:04,138 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1974 transitions. Word has length 356 [2022-11-16 11:07:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:04,138 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1974 transitions. [2022-11-16 11:07:04,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1974 transitions. [2022-11-16 11:07:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-16 11:07:04,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:04,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-16 11:07:04,143 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:04,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:04,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1486693640, now seen corresponding path program 1 times [2022-11-16 11:07:04,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:04,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776707677] [2022-11-16 11:07:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:04,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:04,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776707677] [2022-11-16 11:07:04,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776707677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:04,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:04,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:04,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004129615] [2022-11-16 11:07:04,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:04,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:04,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:04,715 INFO L87 Difference]: Start difference. First operand 1240 states and 1974 transitions. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:05,486 INFO L93 Difference]: Finished difference Result 3710 states and 5911 transitions. [2022-11-16 11:07:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:05,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 357 [2022-11-16 11:07:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:05,489 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:05,489 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:05,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:05,491 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 9121 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9124 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:05,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9124 Valid, 3659 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5927125506072874) internal successors, (1967), 1235 states have internal predecessors, (1967), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1973 transitions. [2022-11-16 11:07:05,520 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1973 transitions. Word has length 357 [2022-11-16 11:07:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:05,521 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1973 transitions. [2022-11-16 11:07:05,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1973 transitions. [2022-11-16 11:07:05,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-16 11:07:05,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:05,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:05,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-16 11:07:05,524 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash -110497878, now seen corresponding path program 1 times [2022-11-16 11:07:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:05,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410100198] [2022-11-16 11:07:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:05,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:06,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:06,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410100198] [2022-11-16 11:07:06,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410100198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:06,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:06,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748465912] [2022-11-16 11:07:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:06,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:06,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:06,170 INFO L87 Difference]: Start difference. First operand 1240 states and 1973 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:06,940 INFO L93 Difference]: Finished difference Result 3710 states and 5908 transitions. [2022-11-16 11:07:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:06,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 358 [2022-11-16 11:07:06,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:06,944 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:06,944 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:06,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:06,946 INFO L413 NwaCegarLoop]: 1915 mSDtfsCounter, 5625 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5628 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:06,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5628 Valid, 3670 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:06,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5919028340080972) internal successors, (1966), 1235 states have internal predecessors, (1966), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1972 transitions. [2022-11-16 11:07:06,991 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1972 transitions. Word has length 358 [2022-11-16 11:07:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:06,992 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1972 transitions. [2022-11-16 11:07:06,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1972 transitions. [2022-11-16 11:07:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-16 11:07:06,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:06,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-16 11:07:06,995 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1460103070, now seen corresponding path program 1 times [2022-11-16 11:07:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217961871] [2022-11-16 11:07:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:07,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:07,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217961871] [2022-11-16 11:07:07,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217961871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:07,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:07,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:07,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956900071] [2022-11-16 11:07:07,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:07,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:07,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:07,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:07,581 INFO L87 Difference]: Start difference. First operand 1240 states and 1972 transitions. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:08,357 INFO L93 Difference]: Finished difference Result 3710 states and 5905 transitions. [2022-11-16 11:07:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:08,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 359 [2022-11-16 11:07:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:08,360 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:08,360 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:08,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:08,362 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 9089 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9092 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:08,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9092 Valid, 3661 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.591093117408907) internal successors, (1965), 1235 states have internal predecessors, (1965), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1971 transitions. [2022-11-16 11:07:08,394 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1971 transitions. Word has length 359 [2022-11-16 11:07:08,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:08,394 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1971 transitions. [2022-11-16 11:07:08,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1971 transitions. [2022-11-16 11:07:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-16 11:07:08,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:08,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:08,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-16 11:07:08,398 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:08,398 INFO L85 PathProgramCache]: Analyzing trace with hash 412173840, now seen corresponding path program 1 times [2022-11-16 11:07:08,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:08,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963886817] [2022-11-16 11:07:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:08,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:08,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963886817] [2022-11-16 11:07:08,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963886817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:08,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:08,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212421773] [2022-11-16 11:07:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:08,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:08,986 INFO L87 Difference]: Start difference. First operand 1240 states and 1971 transitions. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:09,766 INFO L93 Difference]: Finished difference Result 3710 states and 5902 transitions. [2022-11-16 11:07:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:09,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 360 [2022-11-16 11:07:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:09,770 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:09,770 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:09,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:09,772 INFO L413 NwaCegarLoop]: 1917 mSDtfsCounter, 5611 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5614 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:09,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5614 Valid, 3672 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:09,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5902834008097166) internal successors, (1964), 1235 states have internal predecessors, (1964), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1970 transitions. [2022-11-16 11:07:09,816 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1970 transitions. Word has length 360 [2022-11-16 11:07:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:09,817 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1970 transitions. [2022-11-16 11:07:09,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:09,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1970 transitions. [2022-11-16 11:07:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-16 11:07:09,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:09,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:09,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-16 11:07:09,821 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash -442740924, now seen corresponding path program 1 times [2022-11-16 11:07:09,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:09,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288481732] [2022-11-16 11:07:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:10,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288481732] [2022-11-16 11:07:10,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288481732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:10,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:10,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:10,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541427600] [2022-11-16 11:07:10,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:10,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:10,414 INFO L87 Difference]: Start difference. First operand 1240 states and 1970 transitions. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:11,176 INFO L93 Difference]: Finished difference Result 3710 states and 5899 transitions. [2022-11-16 11:07:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:11,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 361 [2022-11-16 11:07:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:11,180 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:11,180 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:11,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:11,183 INFO L413 NwaCegarLoop]: 1918 mSDtfsCounter, 9057 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9060 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:11,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9060 Valid, 3663 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5894736842105264) internal successors, (1963), 1235 states have internal predecessors, (1963), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1969 transitions. [2022-11-16 11:07:11,227 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1969 transitions. Word has length 361 [2022-11-16 11:07:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:11,227 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1969 transitions. [2022-11-16 11:07:11,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:11,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1969 transitions. [2022-11-16 11:07:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-16 11:07:11,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:11,231 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:11,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-16 11:07:11,232 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:11,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash 91137910, now seen corresponding path program 1 times [2022-11-16 11:07:11,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:11,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310895186] [2022-11-16 11:07:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:11,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310895186] [2022-11-16 11:07:11,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310895186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:11,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:11,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916599733] [2022-11-16 11:07:11,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:11,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:11,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:11,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:11,888 INFO L87 Difference]: Start difference. First operand 1240 states and 1969 transitions. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:12,656 INFO L93 Difference]: Finished difference Result 3710 states and 5896 transitions. [2022-11-16 11:07:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:12,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 362 [2022-11-16 11:07:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:12,659 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:12,660 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:12,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:12,661 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 5597 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5600 SdHoareTripleChecker+Valid, 3674 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:12,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5600 Valid, 3674 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.588663967611336) internal successors, (1962), 1235 states have internal predecessors, (1962), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1968 transitions. [2022-11-16 11:07:12,697 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1968 transitions. Word has length 362 [2022-11-16 11:07:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:12,698 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1968 transitions. [2022-11-16 11:07:12,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1968 transitions. [2022-11-16 11:07:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-16 11:07:12,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:12,700 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:12,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-16 11:07:12,700 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash 48304618, now seen corresponding path program 1 times [2022-11-16 11:07:12,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:12,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151402062] [2022-11-16 11:07:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:13,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:13,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151402062] [2022-11-16 11:07:13,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151402062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:13,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:13,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:13,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026275356] [2022-11-16 11:07:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:13,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:13,275 INFO L87 Difference]: Start difference. First operand 1240 states and 1968 transitions. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:14,030 INFO L93 Difference]: Finished difference Result 3710 states and 5893 transitions. [2022-11-16 11:07:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:14,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 363 [2022-11-16 11:07:14,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:14,033 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:14,033 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:14,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:14,034 INFO L413 NwaCegarLoop]: 1920 mSDtfsCounter, 5590 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:14,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 3675 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5878542510121458) internal successors, (1961), 1235 states have internal predecessors, (1961), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1967 transitions. [2022-11-16 11:07:14,064 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1967 transitions. Word has length 363 [2022-11-16 11:07:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:14,065 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1967 transitions. [2022-11-16 11:07:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1967 transitions. [2022-11-16 11:07:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-16 11:07:14,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:14,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:14,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-16 11:07:14,068 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -358247460, now seen corresponding path program 1 times [2022-11-16 11:07:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:14,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112746780] [2022-11-16 11:07:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:14,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:14,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112746780] [2022-11-16 11:07:14,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112746780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:14,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:14,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951394829] [2022-11-16 11:07:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:14,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:14,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:14,684 INFO L87 Difference]: Start difference. First operand 1240 states and 1967 transitions. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:15,447 INFO L93 Difference]: Finished difference Result 3710 states and 5890 transitions. [2022-11-16 11:07:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:15,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 364 [2022-11-16 11:07:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:15,451 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:15,451 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:15,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:15,453 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 5583 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5586 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:15,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5586 Valid, 3676 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5870445344129556) internal successors, (1960), 1235 states have internal predecessors, (1960), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1966 transitions. [2022-11-16 11:07:15,497 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1966 transitions. Word has length 364 [2022-11-16 11:07:15,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:15,498 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1966 transitions. [2022-11-16 11:07:15,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1966 transitions. [2022-11-16 11:07:15,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-16 11:07:15,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:15,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:15,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-16 11:07:15,502 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1143656560, now seen corresponding path program 1 times [2022-11-16 11:07:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:15,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502344356] [2022-11-16 11:07:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502344356] [2022-11-16 11:07:16,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502344356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:16,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:16,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:07:16,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079212340] [2022-11-16 11:07:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:07:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:07:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:16,090 INFO L87 Difference]: Start difference. First operand 1240 states and 1966 transitions. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:16,869 INFO L93 Difference]: Finished difference Result 3710 states and 5887 transitions. [2022-11-16 11:07:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:16,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 365 [2022-11-16 11:07:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:16,873 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:07:16,873 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:07:16,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:16,875 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 5576 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5579 SdHoareTripleChecker+Valid, 3677 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:16,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5579 Valid, 3677 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:07:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:07:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:07:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.586234817813765) internal successors, (1959), 1235 states have internal predecessors, (1959), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1965 transitions. [2022-11-16 11:07:16,908 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1965 transitions. Word has length 365 [2022-11-16 11:07:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:16,908 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1965 transitions. [2022-11-16 11:07:16,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1965 transitions. [2022-11-16 11:07:16,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:16,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:16,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:16,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-16 11:07:16,911 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1863945026, now seen corresponding path program 1 times [2022-11-16 11:07:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:16,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925665349] [2022-11-16 11:07:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:17,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:17,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925665349] [2022-11-16 11:07:17,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925665349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:17,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:17,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:17,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140848257] [2022-11-16 11:07:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:17,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:17,617 INFO L87 Difference]: Start difference. First operand 1240 states and 1965 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:18,091 INFO L93 Difference]: Finished difference Result 2478 states and 3928 transitions. [2022-11-16 11:07:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:18,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:18,093 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:18,093 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:18,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:18,094 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1744 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:18,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1744 Valid, 3476 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5854251012145748) internal successors, (1958), 1235 states have internal predecessors, (1958), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1964 transitions. [2022-11-16 11:07:18,119 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1964 transitions. Word has length 366 [2022-11-16 11:07:18,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:18,120 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1964 transitions. [2022-11-16 11:07:18,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1964 transitions. [2022-11-16 11:07:18,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:18,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:18,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:18,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-16 11:07:18,122 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:18,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2020411904, now seen corresponding path program 1 times [2022-11-16 11:07:18,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:18,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998727823] [2022-11-16 11:07:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:18,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998727823] [2022-11-16 11:07:18,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998727823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:18,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:18,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:18,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825913613] [2022-11-16 11:07:18,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:18,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:18,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:18,761 INFO L87 Difference]: Start difference. First operand 1240 states and 1964 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:19,234 INFO L93 Difference]: Finished difference Result 2478 states and 3926 transitions. [2022-11-16 11:07:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:19,236 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:19,237 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:19,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:19,238 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1746 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:19,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 3476 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:19,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5846153846153845) internal successors, (1957), 1235 states have internal predecessors, (1957), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1963 transitions. [2022-11-16 11:07:19,263 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1963 transitions. Word has length 366 [2022-11-16 11:07:19,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:19,264 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1963 transitions. [2022-11-16 11:07:19,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1963 transitions. [2022-11-16 11:07:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:19,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:19,266 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:19,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-16 11:07:19,266 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1593857406, now seen corresponding path program 1 times [2022-11-16 11:07:19,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:19,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918986172] [2022-11-16 11:07:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:19,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:19,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918986172] [2022-11-16 11:07:19,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918986172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:19,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:19,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:19,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980634091] [2022-11-16 11:07:19,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:19,915 INFO L87 Difference]: Start difference. First operand 1240 states and 1963 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:20,397 INFO L93 Difference]: Finished difference Result 2478 states and 3924 transitions. [2022-11-16 11:07:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:20,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:20,399 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:20,399 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:20,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:20,401 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1748 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:20,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 3476 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5838056680161943) internal successors, (1956), 1235 states have internal predecessors, (1956), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1962 transitions. [2022-11-16 11:07:20,441 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1962 transitions. Word has length 366 [2022-11-16 11:07:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:20,441 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1962 transitions. [2022-11-16 11:07:20,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1962 transitions. [2022-11-16 11:07:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:20,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:20,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:20,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-16 11:07:20,446 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1377930944, now seen corresponding path program 1 times [2022-11-16 11:07:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653157452] [2022-11-16 11:07:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:21,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653157452] [2022-11-16 11:07:21,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653157452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:21,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:21,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517322951] [2022-11-16 11:07:21,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:21,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:21,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:21,101 INFO L87 Difference]: Start difference. First operand 1240 states and 1962 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:21,580 INFO L93 Difference]: Finished difference Result 2478 states and 3922 transitions. [2022-11-16 11:07:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:21,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:21,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:21,582 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:21,583 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:21,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:21,584 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1750 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:21,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 3476 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.582995951417004) internal successors, (1955), 1235 states have internal predecessors, (1955), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1961 transitions. [2022-11-16 11:07:21,608 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1961 transitions. Word has length 366 [2022-11-16 11:07:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:21,609 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1961 transitions. [2022-11-16 11:07:21,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1961 transitions. [2022-11-16 11:07:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:21,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:21,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:21,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-16 11:07:21,611 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1763793346, now seen corresponding path program 1 times [2022-11-16 11:07:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:21,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315126934] [2022-11-16 11:07:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:22,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:22,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:22,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315126934] [2022-11-16 11:07:22,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315126934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:22,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:22,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131919767] [2022-11-16 11:07:22,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:22,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:22,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:22,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:22,322 INFO L87 Difference]: Start difference. First operand 1240 states and 1961 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:22,791 INFO L93 Difference]: Finished difference Result 2478 states and 3920 transitions. [2022-11-16 11:07:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:22,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:22,793 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:22,793 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:22,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:22,794 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1752 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:22,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 3476 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5821862348178137) internal successors, (1954), 1235 states have internal predecessors, (1954), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1960 transitions. [2022-11-16 11:07:22,820 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1960 transitions. Word has length 366 [2022-11-16 11:07:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:22,820 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1960 transitions. [2022-11-16 11:07:22,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1960 transitions. [2022-11-16 11:07:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:22,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:22,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-16 11:07:22,823 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash -636840064, now seen corresponding path program 1 times [2022-11-16 11:07:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:22,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855388913] [2022-11-16 11:07:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:23,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855388913] [2022-11-16 11:07:23,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855388913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:23,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:23,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615956902] [2022-11-16 11:07:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:23,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:23,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:23,463 INFO L87 Difference]: Start difference. First operand 1240 states and 1960 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:23,952 INFO L93 Difference]: Finished difference Result 2478 states and 3918 transitions. [2022-11-16 11:07:23,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:23,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:23,954 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:23,954 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:23,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:23,956 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1754 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:23,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 3476 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:23,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5813765182186235) internal successors, (1953), 1235 states have internal predecessors, (1953), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1959 transitions. [2022-11-16 11:07:23,981 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1959 transitions. Word has length 366 [2022-11-16 11:07:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:23,981 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1959 transitions. [2022-11-16 11:07:23,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1959 transitions. [2022-11-16 11:07:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:23,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:23,984 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:23,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-16 11:07:23,984 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1888655618, now seen corresponding path program 1 times [2022-11-16 11:07:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376163039] [2022-11-16 11:07:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:23,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:24,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:24,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:24,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376163039] [2022-11-16 11:07:24,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376163039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:24,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:24,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144209227] [2022-11-16 11:07:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:24,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:24,652 INFO L87 Difference]: Start difference. First operand 1240 states and 1959 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:25,119 INFO L93 Difference]: Finished difference Result 2478 states and 3916 transitions. [2022-11-16 11:07:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:25,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:25,121 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:25,122 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:25,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:25,123 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1756 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:25,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 3476 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5805668016194332) internal successors, (1952), 1235 states have internal predecessors, (1952), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1958 transitions. [2022-11-16 11:07:25,148 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1958 transitions. Word has length 366 [2022-11-16 11:07:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:25,148 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1958 transitions. [2022-11-16 11:07:25,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1958 transitions. [2022-11-16 11:07:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:25,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:25,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:25,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-16 11:07:25,152 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash -306573248, now seen corresponding path program 1 times [2022-11-16 11:07:25,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:25,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958255360] [2022-11-16 11:07:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:25,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:25,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:25,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:25,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958255360] [2022-11-16 11:07:25,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958255360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:25,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:25,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:25,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236651936] [2022-11-16 11:07:25,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:25,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:25,810 INFO L87 Difference]: Start difference. First operand 1240 states and 1958 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:26,274 INFO L93 Difference]: Finished difference Result 2478 states and 3914 transitions. [2022-11-16 11:07:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:26,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:26,276 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:26,277 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:26,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:26,278 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1758 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:26,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 3476 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.579757085020243) internal successors, (1951), 1235 states have internal predecessors, (1951), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1957 transitions. [2022-11-16 11:07:26,303 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1957 transitions. Word has length 366 [2022-11-16 11:07:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:26,304 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1957 transitions. [2022-11-16 11:07:26,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1957 transitions. [2022-11-16 11:07:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:26,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:26,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:26,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-16 11:07:26,307 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1097295938, now seen corresponding path program 1 times [2022-11-16 11:07:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:26,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673830764] [2022-11-16 11:07:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:27,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:27,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:27,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:27,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673830764] [2022-11-16 11:07:27,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673830764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:27,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:27,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:27,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942087868] [2022-11-16 11:07:27,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:27,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:27,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:27,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:27,102 INFO L87 Difference]: Start difference. First operand 1240 states and 1957 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:27,583 INFO L93 Difference]: Finished difference Result 2478 states and 3912 transitions. [2022-11-16 11:07:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:27,585 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:27,585 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:27,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:27,587 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1760 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:27,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 3476 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5789473684210527) internal successors, (1950), 1235 states have internal predecessors, (1950), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1956 transitions. [2022-11-16 11:07:27,618 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1956 transitions. Word has length 366 [2022-11-16 11:07:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:27,618 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1956 transitions. [2022-11-16 11:07:27,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1956 transitions. [2022-11-16 11:07:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:27,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:27,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:27,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-16 11:07:27,621 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -627312384, now seen corresponding path program 1 times [2022-11-16 11:07:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:27,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914992785] [2022-11-16 11:07:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:28,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914992785] [2022-11-16 11:07:28,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914992785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:28,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:28,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:28,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154406125] [2022-11-16 11:07:28,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:28,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:28,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:28,277 INFO L87 Difference]: Start difference. First operand 1240 states and 1956 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:28,755 INFO L93 Difference]: Finished difference Result 2478 states and 3910 transitions. [2022-11-16 11:07:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:28,757 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:28,757 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:28,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:28,758 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1762 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:28,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 3476 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5781376518218624) internal successors, (1949), 1235 states have internal predecessors, (1949), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1955 transitions. [2022-11-16 11:07:28,792 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1955 transitions. Word has length 366 [2022-11-16 11:07:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:28,792 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1955 transitions. [2022-11-16 11:07:28,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1955 transitions. [2022-11-16 11:07:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:28,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:28,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:28,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-16 11:07:28,796 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:28,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:28,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2035038334, now seen corresponding path program 1 times [2022-11-16 11:07:28,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:28,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300692510] [2022-11-16 11:07:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:28,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:29,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:29,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300692510] [2022-11-16 11:07:29,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300692510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:29,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:29,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:29,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789340220] [2022-11-16 11:07:29,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:29,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:29,442 INFO L87 Difference]: Start difference. First operand 1240 states and 1955 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:29,903 INFO L93 Difference]: Finished difference Result 2478 states and 3908 transitions. [2022-11-16 11:07:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:29,906 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:29,906 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:29,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:29,907 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1764 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:29,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 3476 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5773279352226721) internal successors, (1948), 1235 states have internal predecessors, (1948), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1954 transitions. [2022-11-16 11:07:29,947 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1954 transitions. Word has length 366 [2022-11-16 11:07:29,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:29,948 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1954 transitions. [2022-11-16 11:07:29,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:29,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1954 transitions. [2022-11-16 11:07:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:29,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:29,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-16 11:07:29,952 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash 756830656, now seen corresponding path program 1 times [2022-11-16 11:07:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293483245] [2022-11-16 11:07:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:30,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:30,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293483245] [2022-11-16 11:07:30,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293483245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:30,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:30,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146927910] [2022-11-16 11:07:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:30,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:30,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:30,640 INFO L87 Difference]: Start difference. First operand 1240 states and 1954 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:31,097 INFO L93 Difference]: Finished difference Result 2478 states and 3906 transitions. [2022-11-16 11:07:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:31,099 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:31,100 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:31,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:31,101 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1766 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:31,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 3476 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5765182186234818) internal successors, (1947), 1235 states have internal predecessors, (1947), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1953 transitions. [2022-11-16 11:07:31,128 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1953 transitions. Word has length 366 [2022-11-16 11:07:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:31,128 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1953 transitions. [2022-11-16 11:07:31,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1953 transitions. [2022-11-16 11:07:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:31,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:31,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-16 11:07:31,131 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1284224706, now seen corresponding path program 1 times [2022-11-16 11:07:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:31,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284624775] [2022-11-16 11:07:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:31,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:31,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284624775] [2022-11-16 11:07:31,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284624775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:31,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:31,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665642078] [2022-11-16 11:07:31,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:31,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:31,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:31,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:31,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:31,859 INFO L87 Difference]: Start difference. First operand 1240 states and 1953 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:32,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:32,327 INFO L93 Difference]: Finished difference Result 2478 states and 3904 transitions. [2022-11-16 11:07:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:32,329 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:32,329 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:32,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:32,331 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1768 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:32,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 3476 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:07:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:07:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5757085020242916) internal successors, (1946), 1235 states have internal predecessors, (1946), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:07:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1952 transitions. [2022-11-16 11:07:32,356 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1952 transitions. Word has length 366 [2022-11-16 11:07:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:32,356 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1952 transitions. [2022-11-16 11:07:32,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1952 transitions. [2022-11-16 11:07:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 11:07:32,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:32,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:32,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-11-16 11:07:32,360 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1889999488, now seen corresponding path program 1 times [2022-11-16 11:07:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:32,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780681257] [2022-11-16 11:07:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:07:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:07:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:07:32,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780681257] [2022-11-16 11:07:32,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780681257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:32,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:32,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:07:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016045809] [2022-11-16 11:07:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:32,996 INFO L87 Difference]: Start difference. First operand 1240 states and 1952 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:07:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:33,449 INFO L93 Difference]: Finished difference Result 2478 states and 3902 transitions. [2022-11-16 11:07:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 366 [2022-11-16 11:07:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:33,451 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:07:33,451 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:07:33,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:07:33,452 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1770 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:33,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 3476 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2022-11-16 11:09:52,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:52,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:09:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730940185] [2022-11-16 11:09:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:09:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:09:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:09:52,945 INFO L87 Difference]: Start difference. First operand 1240 states and 1880 transitions. Second operand has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:09:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:54,358 INFO L93 Difference]: Finished difference Result 3710 states and 5629 transitions. [2022-11-16 11:09:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:54,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 420 [2022-11-16 11:09:54,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:54,361 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:09:54,361 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:09:54,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:54,362 INFO L413 NwaCegarLoop]: 1723 mSDtfsCounter, 8020 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8023 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:54,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8023 Valid, 3149 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:09:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:09:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:09:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5165991902834008) internal successors, (1873), 1235 states have internal predecessors, (1873), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1879 transitions. [2022-11-16 11:09:54,403 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1879 transitions. Word has length 420 [2022-11-16 11:09:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:54,403 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1879 transitions. [2022-11-16 11:09:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:09:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1879 transitions. [2022-11-16 11:09:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-16 11:09:54,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:54,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:54,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-11-16 11:09:54,406 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -488109062, now seen corresponding path program 1 times [2022-11-16 11:09:54,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:54,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71045528] [2022-11-16 11:09:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:54,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:09:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:09:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:09:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:09:55,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:55,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71045528] [2022-11-16 11:09:55,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71045528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:55,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:55,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:09:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986926558] [2022-11-16 11:09:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:55,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:09:55,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:09:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:09:55,116 INFO L87 Difference]: Start difference. First operand 1240 states and 1879 transitions. Second operand has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:09:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:56,519 INFO L93 Difference]: Finished difference Result 3710 states and 5626 transitions. [2022-11-16 11:09:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:56,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 421 [2022-11-16 11:09:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:56,522 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:09:56,522 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:09:56,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:56,524 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 8004 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8007 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:56,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8007 Valid, 3150 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:09:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:09:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:09:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5157894736842106) internal successors, (1872), 1235 states have internal predecessors, (1872), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1878 transitions. [2022-11-16 11:09:56,563 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1878 transitions. Word has length 421 [2022-11-16 11:09:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:56,564 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1878 transitions. [2022-11-16 11:09:56,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:09:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1878 transitions. [2022-11-16 11:09:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-16 11:09:56,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:56,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:56,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-11-16 11:09:56,566 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:56,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1783646312, now seen corresponding path program 1 times [2022-11-16 11:09:56,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:56,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026325373] [2022-11-16 11:09:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:56,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:09:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:09:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:09:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:09:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:57,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026325373] [2022-11-16 11:09:57,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026325373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:57,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:57,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:09:57,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91012301] [2022-11-16 11:09:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:57,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:09:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:09:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:09:57,248 INFO L87 Difference]: Start difference. First operand 1240 states and 1878 transitions. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:09:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:58,650 INFO L93 Difference]: Finished difference Result 3710 states and 5623 transitions. [2022-11-16 11:09:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:58,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 422 [2022-11-16 11:09:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:58,653 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:09:58,654 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:09:58,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:58,655 INFO L413 NwaCegarLoop]: 1725 mSDtfsCounter, 5115 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5118 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:58,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5118 Valid, 3161 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:09:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:09:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:09:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5149797570850203) internal successors, (1871), 1235 states have internal predecessors, (1871), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1877 transitions. [2022-11-16 11:09:58,696 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1877 transitions. Word has length 422 [2022-11-16 11:09:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:58,696 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1877 transitions. [2022-11-16 11:09:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:09:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1877 transitions. [2022-11-16 11:09:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-16 11:09:58,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:58,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:58,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-11-16 11:09:58,699 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:58,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1006497824, now seen corresponding path program 1 times [2022-11-16 11:09:58,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:58,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671623659] [2022-11-16 11:09:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:58,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:09:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:09:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:09:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:09:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:59,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671623659] [2022-11-16 11:09:59,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671623659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:59,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:59,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:09:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177183927] [2022-11-16 11:09:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:09:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:09:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:09:59,392 INFO L87 Difference]: Start difference. First operand 1240 states and 1877 transitions. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:00,820 INFO L93 Difference]: Finished difference Result 3710 states and 5620 transitions. [2022-11-16 11:10:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:00,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 423 [2022-11-16 11:10:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:00,823 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:10:00,823 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:10:00,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:00,825 INFO L413 NwaCegarLoop]: 1726 mSDtfsCounter, 7972 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7975 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:00,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7975 Valid, 3152 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:10:00,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:10:00,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:10:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.51417004048583) internal successors, (1870), 1235 states have internal predecessors, (1870), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1876 transitions. [2022-11-16 11:10:00,865 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1876 transitions. Word has length 423 [2022-11-16 11:10:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:00,865 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1876 transitions. [2022-11-16 11:10:00,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:00,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1876 transitions. [2022-11-16 11:10:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-16 11:10:00,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:00,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-11-16 11:10:00,868 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1335756978, now seen corresponding path program 1 times [2022-11-16 11:10:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:00,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767151357] [2022-11-16 11:10:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:01,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767151357] [2022-11-16 11:10:01,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767151357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:01,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:01,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:01,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825762796] [2022-11-16 11:10:01,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:01,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:01,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:01,601 INFO L87 Difference]: Start difference. First operand 1240 states and 1876 transitions. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:03,011 INFO L93 Difference]: Finished difference Result 3710 states and 5617 transitions. [2022-11-16 11:10:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:03,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 424 [2022-11-16 11:10:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:03,015 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:10:03,015 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:10:03,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:03,016 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 7956 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:03,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 3153 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:10:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:10:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:10:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5133603238866398) internal successors, (1869), 1235 states have internal predecessors, (1869), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1875 transitions. [2022-11-16 11:10:03,057 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1875 transitions. Word has length 424 [2022-11-16 11:10:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:03,057 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1875 transitions. [2022-11-16 11:10:03,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1875 transitions. [2022-11-16 11:10:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-11-16 11:10:03,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:03,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:03,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-11-16 11:10:03,060 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2018791238, now seen corresponding path program 1 times [2022-11-16 11:10:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:03,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349218047] [2022-11-16 11:10:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:03,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:03,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:03,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349218047] [2022-11-16 11:10:03,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349218047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:03,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:03,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:03,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081695850] [2022-11-16 11:10:03,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:03,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:03,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:03,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:03,773 INFO L87 Difference]: Start difference. First operand 1240 states and 1875 transitions. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:05,176 INFO L93 Difference]: Finished difference Result 3710 states and 5614 transitions. [2022-11-16 11:10:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 425 [2022-11-16 11:10:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:05,180 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:10:05,180 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:10:05,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:05,181 INFO L413 NwaCegarLoop]: 1728 mSDtfsCounter, 7940 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7943 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:05,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7943 Valid, 3154 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:10:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:10:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:10:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5125506072874495) internal successors, (1868), 1235 states have internal predecessors, (1868), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1874 transitions. [2022-11-16 11:10:05,222 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1874 transitions. Word has length 425 [2022-11-16 11:10:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:05,222 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1874 transitions. [2022-11-16 11:10:05,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1874 transitions. [2022-11-16 11:10:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-16 11:10:05,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:05,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-11-16 11:10:05,225 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2143448780, now seen corresponding path program 1 times [2022-11-16 11:10:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:05,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249843429] [2022-11-16 11:10:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:05,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249843429] [2022-11-16 11:10:05,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249843429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:05,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:05,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680571831] [2022-11-16 11:10:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:05,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:05,913 INFO L87 Difference]: Start difference. First operand 1240 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:07,313 INFO L93 Difference]: Finished difference Result 3710 states and 5611 transitions. [2022-11-16 11:10:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:07,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 426 [2022-11-16 11:10:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:07,317 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:10:07,317 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:10:07,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:07,319 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 7924 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7927 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:07,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7927 Valid, 3155 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:10:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:10:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:10:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.511740890688259) internal successors, (1867), 1235 states have internal predecessors, (1867), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1873 transitions. [2022-11-16 11:10:07,359 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1873 transitions. Word has length 426 [2022-11-16 11:10:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:07,359 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1873 transitions. [2022-11-16 11:10:07,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1873 transitions. [2022-11-16 11:10:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-11-16 11:10:07,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:07,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:07,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-11-16 11:10:07,362 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:07,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1478666604, now seen corresponding path program 1 times [2022-11-16 11:10:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:07,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983152133] [2022-11-16 11:10:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:07,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:08,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983152133] [2022-11-16 11:10:08,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983152133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:08,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:08,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412786498] [2022-11-16 11:10:08,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:08,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:08,103 INFO L87 Difference]: Start difference. First operand 1240 states and 1873 transitions. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:09,518 INFO L93 Difference]: Finished difference Result 3710 states and 5608 transitions. [2022-11-16 11:10:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:09,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 427 [2022-11-16 11:10:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:09,521 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:10:09,521 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:10:09,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:09,523 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 5080 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:09,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5083 Valid, 3166 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:10:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:10:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:10:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5109311740890687) internal successors, (1866), 1235 states have internal predecessors, (1866), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1872 transitions. [2022-11-16 11:10:09,563 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1872 transitions. Word has length 427 [2022-11-16 11:10:09,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:09,564 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1872 transitions. [2022-11-16 11:10:09,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1872 transitions. [2022-11-16 11:10:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-11-16 11:10:09,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:09,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:09,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-11-16 11:10:09,567 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash 856593946, now seen corresponding path program 1 times [2022-11-16 11:10:09,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536700701] [2022-11-16 11:10:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:10,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:10,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:10,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536700701] [2022-11-16 11:10:10,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536700701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:10,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:10,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:10,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123909051] [2022-11-16 11:10:10,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:10,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:10,245 INFO L87 Difference]: Start difference. First operand 1240 states and 1872 transitions. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:11,642 INFO L93 Difference]: Finished difference Result 3710 states and 5605 transitions. [2022-11-16 11:10:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 428 [2022-11-16 11:10:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:11,645 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:10:11,645 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:10:11,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:11,647 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 5073 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5076 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:11,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5076 Valid, 3167 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:10:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:10:11,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:10:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5101214574898785) internal successors, (1865), 1235 states have internal predecessors, (1865), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1871 transitions. [2022-11-16 11:10:11,688 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1871 transitions. Word has length 428 [2022-11-16 11:10:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:11,689 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1871 transitions. [2022-11-16 11:10:11,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1871 transitions. [2022-11-16 11:10:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-16 11:10:11,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:11,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:11,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-11-16 11:10:11,692 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1159692654, now seen corresponding path program 1 times [2022-11-16 11:10:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:11,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929104204] [2022-11-16 11:10:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:12,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929104204] [2022-11-16 11:10:12,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929104204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:12,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:12,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452351983] [2022-11-16 11:10:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:12,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:12,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:12,381 INFO L87 Difference]: Start difference. First operand 1240 states and 1871 transitions. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:13,845 INFO L93 Difference]: Finished difference Result 3710 states and 5602 transitions. [2022-11-16 11:10:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:13,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 429 [2022-11-16 11:10:13,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:13,849 INFO L225 Difference]: With dead ends: 3710 [2022-11-16 11:10:13,849 INFO L226 Difference]: Without dead ends: 2472 [2022-11-16 11:10:13,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:13,850 INFO L413 NwaCegarLoop]: 1732 mSDtfsCounter, 5066 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:13,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5069 Valid, 3168 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:10:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-16 11:10:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1240. [2022-11-16 11:10:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5093117408906882) internal successors, (1864), 1235 states have internal predecessors, (1864), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1870 transitions. [2022-11-16 11:10:13,891 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1870 transitions. Word has length 429 [2022-11-16 11:10:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:13,892 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1870 transitions. [2022-11-16 11:10:13,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1870 transitions. [2022-11-16 11:10:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:13,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:13,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:13,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-11-16 11:10:13,895 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 473990656, now seen corresponding path program 1 times [2022-11-16 11:10:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:13,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651189839] [2022-11-16 11:10:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:13,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:14,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:14,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:14,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651189839] [2022-11-16 11:10:14,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651189839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:14,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:14,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40948326] [2022-11-16 11:10:14,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:14,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:14,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:14,624 INFO L87 Difference]: Start difference. First operand 1240 states and 1870 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:15,499 INFO L93 Difference]: Finished difference Result 2478 states and 3738 transitions. [2022-11-16 11:10:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:15,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:15,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:15,502 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:15,502 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:15,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:15,503 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1457 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:15,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 2838 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:10:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.508502024291498) internal successors, (1863), 1235 states have internal predecessors, (1863), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1869 transitions. [2022-11-16 11:10:15,540 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1869 transitions. Word has length 430 [2022-11-16 11:10:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:15,540 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1869 transitions. [2022-11-16 11:10:15,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1869 transitions. [2022-11-16 11:10:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:15,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:15,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:15,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-11-16 11:10:15,543 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:15,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash 732156094, now seen corresponding path program 1 times [2022-11-16 11:10:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:15,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688774445] [2022-11-16 11:10:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:15,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:16,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:16,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688774445] [2022-11-16 11:10:16,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688774445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:16,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:16,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794196903] [2022-11-16 11:10:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:16,233 INFO L87 Difference]: Start difference. First operand 1240 states and 1869 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:17,137 INFO L93 Difference]: Finished difference Result 2478 states and 3736 transitions. [2022-11-16 11:10:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:17,139 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:17,139 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:17,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:17,140 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1459 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:17,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 2838 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:10:17,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5076923076923077) internal successors, (1862), 1235 states have internal predecessors, (1862), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1868 transitions. [2022-11-16 11:10:17,177 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1868 transitions. Word has length 430 [2022-11-16 11:10:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:17,178 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1868 transitions. [2022-11-16 11:10:17,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1868 transitions. [2022-11-16 11:10:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:17,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:17,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:17,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-11-16 11:10:17,181 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash -547707584, now seen corresponding path program 1 times [2022-11-16 11:10:17,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:17,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32017605] [2022-11-16 11:10:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:17,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32017605] [2022-11-16 11:10:17,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32017605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:17,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:17,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933030197] [2022-11-16 11:10:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:17,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:17,871 INFO L87 Difference]: Start difference. First operand 1240 states and 1868 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:18,741 INFO L93 Difference]: Finished difference Result 2478 states and 3734 transitions. [2022-11-16 11:10:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:18,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:18,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:18,744 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:18,744 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:18,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:18,745 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1461 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:18,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 2838 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:10:18,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5068825910931174) internal successors, (1861), 1235 states have internal predecessors, (1861), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:18,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1867 transitions. [2022-11-16 11:10:18,782 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1867 transitions. Word has length 430 [2022-11-16 11:10:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:18,783 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1867 transitions. [2022-11-16 11:10:18,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1867 transitions. [2022-11-16 11:10:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:18,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:18,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:18,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-11-16 11:10:18,786 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:18,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1753115006, now seen corresponding path program 1 times [2022-11-16 11:10:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381250561] [2022-11-16 11:10:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:19,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:19,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381250561] [2022-11-16 11:10:19,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381250561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:19,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:19,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904728674] [2022-11-16 11:10:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:19,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:19,567 INFO L87 Difference]: Start difference. First operand 1240 states and 1867 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:20,424 INFO L93 Difference]: Finished difference Result 2478 states and 3732 transitions. [2022-11-16 11:10:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:20,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:20,426 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:20,426 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:20,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:20,427 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1463 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:20,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 2838 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:10:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5060728744939271) internal successors, (1860), 1235 states have internal predecessors, (1860), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1866 transitions. [2022-11-16 11:10:20,460 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1866 transitions. Word has length 430 [2022-11-16 11:10:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:20,461 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1866 transitions. [2022-11-16 11:10:20,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1866 transitions. [2022-11-16 11:10:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:20,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:20,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:20,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-11-16 11:10:20,465 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2119150464, now seen corresponding path program 1 times [2022-11-16 11:10:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:20,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571134010] [2022-11-16 11:10:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:20,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:21,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:21,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571134010] [2022-11-16 11:10:21,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571134010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:21,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:21,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045745573] [2022-11-16 11:10:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:21,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:21,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:21,110 INFO L87 Difference]: Start difference. First operand 1240 states and 1866 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:21,873 INFO L93 Difference]: Finished difference Result 2478 states and 3730 transitions. [2022-11-16 11:10:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:21,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:21,875 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:21,875 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:21,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:21,876 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1465 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:21,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2838 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:21,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5052631578947369) internal successors, (1859), 1235 states have internal predecessors, (1859), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1865 transitions. [2022-11-16 11:10:21,911 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1865 transitions. Word has length 430 [2022-11-16 11:10:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:21,912 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1865 transitions. [2022-11-16 11:10:21,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1865 transitions. [2022-11-16 11:10:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:21,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:21,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:21,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-11-16 11:10:21,914 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2041803326, now seen corresponding path program 1 times [2022-11-16 11:10:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779305958] [2022-11-16 11:10:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:22,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:22,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:22,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779305958] [2022-11-16 11:10:22,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779305958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:22,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:22,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:22,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813446122] [2022-11-16 11:10:22,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:22,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:22,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:22,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:22,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:22,578 INFO L87 Difference]: Start difference. First operand 1240 states and 1865 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:23,358 INFO L93 Difference]: Finished difference Result 2478 states and 3728 transitions. [2022-11-16 11:10:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:23,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:23,360 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:23,360 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:23,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:23,361 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1467 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:23,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 2838 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5044534412955466) internal successors, (1858), 1235 states have internal predecessors, (1858), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1864 transitions. [2022-11-16 11:10:23,398 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1864 transitions. Word has length 430 [2022-11-16 11:10:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:23,399 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1864 transitions. [2022-11-16 11:10:23,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1864 transitions. [2022-11-16 11:10:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:23,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:23,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:23,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-11-16 11:10:23,401 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash -329935936, now seen corresponding path program 1 times [2022-11-16 11:10:23,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:23,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009765667] [2022-11-16 11:10:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:23,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:24,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:24,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009765667] [2022-11-16 11:10:24,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009765667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:24,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:24,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:24,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916055050] [2022-11-16 11:10:24,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:24,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:24,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:24,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:24,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:24,077 INFO L87 Difference]: Start difference. First operand 1240 states and 1864 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:24,929 INFO L93 Difference]: Finished difference Result 2478 states and 3726 transitions. [2022-11-16 11:10:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:24,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:24,931 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:24,931 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:24,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:24,932 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1469 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:24,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 2838 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:10:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5036437246963563) internal successors, (1857), 1235 states have internal predecessors, (1857), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1863 transitions. [2022-11-16 11:10:24,969 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1863 transitions. Word has length 430 [2022-11-16 11:10:24,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:24,970 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1863 transitions. [2022-11-16 11:10:24,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1863 transitions. [2022-11-16 11:10:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:24,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:24,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-11-16 11:10:24,973 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash -307303682, now seen corresponding path program 1 times [2022-11-16 11:10:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:24,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526176198] [2022-11-16 11:10:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:25,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:25,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526176198] [2022-11-16 11:10:25,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526176198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:25,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:25,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783363592] [2022-11-16 11:10:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:25,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:25,950 INFO L87 Difference]: Start difference. First operand 1240 states and 1863 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:26,733 INFO L93 Difference]: Finished difference Result 2478 states and 3724 transitions. [2022-11-16 11:10:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:26,735 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:26,735 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:26,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:26,736 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1471 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:26,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 2838 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:26,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.502834008097166) internal successors, (1856), 1235 states have internal predecessors, (1856), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1862 transitions. [2022-11-16 11:10:26,774 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1862 transitions. Word has length 430 [2022-11-16 11:10:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:26,775 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1862 transitions. [2022-11-16 11:10:26,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1862 transitions. [2022-11-16 11:10:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:26,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:26,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:26,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-11-16 11:10:26,777 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash -379690240, now seen corresponding path program 1 times [2022-11-16 11:10:26,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:26,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98165585] [2022-11-16 11:10:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:26,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:27,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:27,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98165585] [2022-11-16 11:10:27,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98165585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:27,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:27,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:27,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969307317] [2022-11-16 11:10:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:27,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:27,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:27,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:27,597 INFO L87 Difference]: Start difference. First operand 1240 states and 1862 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:28,388 INFO L93 Difference]: Finished difference Result 2478 states and 3722 transitions. [2022-11-16 11:10:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:28,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:28,390 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:28,390 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:28,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:28,391 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1473 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:28,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2838 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:28,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5020242914979758) internal successors, (1855), 1235 states have internal predecessors, (1855), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1861 transitions. [2022-11-16 11:10:28,429 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1861 transitions. Word has length 430 [2022-11-16 11:10:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:28,429 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1861 transitions. [2022-11-16 11:10:28,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1861 transitions. [2022-11-16 11:10:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:28,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:28,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:28,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-11-16 11:10:28,432 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:28,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:28,432 INFO L85 PathProgramCache]: Analyzing trace with hash -774057026, now seen corresponding path program 1 times [2022-11-16 11:10:28,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:28,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043167183] [2022-11-16 11:10:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:28,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043167183] [2022-11-16 11:10:29,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043167183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:29,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:29,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958276991] [2022-11-16 11:10:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:29,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:29,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:29,108 INFO L87 Difference]: Start difference. First operand 1240 states and 1861 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:29,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:29,909 INFO L93 Difference]: Finished difference Result 2478 states and 3720 transitions. [2022-11-16 11:10:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:29,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:29,911 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:29,911 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:29,912 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1475 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:29,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 2838 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:29,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:29,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5012145748987855) internal successors, (1854), 1235 states have internal predecessors, (1854), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1860 transitions. [2022-11-16 11:10:29,948 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1860 transitions. Word has length 430 [2022-11-16 11:10:29,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:29,948 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1860 transitions. [2022-11-16 11:10:29,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:29,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1860 transitions. [2022-11-16 11:10:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:29,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:29,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:29,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-11-16 11:10:29,951 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1675543104, now seen corresponding path program 1 times [2022-11-16 11:10:29,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:29,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144853302] [2022-11-16 11:10:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:29,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:30,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144853302] [2022-11-16 11:10:30,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144853302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:30,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:30,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833906535] [2022-11-16 11:10:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:30,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:30,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:30,676 INFO L87 Difference]: Start difference. First operand 1240 states and 1860 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:31,544 INFO L93 Difference]: Finished difference Result 2478 states and 3718 transitions. [2022-11-16 11:10:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:31,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:31,546 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:31,547 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:31,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:31,548 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1477 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:31,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2838 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:10:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.5004048582995952) internal successors, (1853), 1235 states have internal predecessors, (1853), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1859 transitions. [2022-11-16 11:10:31,584 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1859 transitions. Word has length 430 [2022-11-16 11:10:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:31,584 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1859 transitions. [2022-11-16 11:10:31,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1859 transitions. [2022-11-16 11:10:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:31,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:31,587 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:31,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-11-16 11:10:31,587 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1923689598, now seen corresponding path program 1 times [2022-11-16 11:10:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:31,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495939507] [2022-11-16 11:10:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:32,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:32,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495939507] [2022-11-16 11:10:32,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495939507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:32,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:32,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:32,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745495415] [2022-11-16 11:10:32,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:32,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:32,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:32,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:32,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:32,239 INFO L87 Difference]: Start difference. First operand 1240 states and 1859 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:33,021 INFO L93 Difference]: Finished difference Result 2478 states and 3716 transitions. [2022-11-16 11:10:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:33,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:33,023 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:33,023 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:33,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:33,024 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1479 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:33,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2838 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4995951417004048) internal successors, (1852), 1235 states have internal predecessors, (1852), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1858 transitions. [2022-11-16 11:10:33,060 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1858 transitions. Word has length 430 [2022-11-16 11:10:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:33,060 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1858 transitions. [2022-11-16 11:10:33,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1858 transitions. [2022-11-16 11:10:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:33,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:33,063 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:33,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-11-16 11:10:33,063 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1477791360, now seen corresponding path program 1 times [2022-11-16 11:10:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:33,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825799374] [2022-11-16 11:10:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:33,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:33,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825799374] [2022-11-16 11:10:33,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825799374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:33,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:33,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158012182] [2022-11-16 11:10:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:33,757 INFO L87 Difference]: Start difference. First operand 1240 states and 1858 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:34,536 INFO L93 Difference]: Finished difference Result 2478 states and 3714 transitions. [2022-11-16 11:10:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:34,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:34,538 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:34,538 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:34,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:34,539 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1481 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:34,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2838 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4987854251012145) internal successors, (1851), 1235 states have internal predecessors, (1851), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1857 transitions. [2022-11-16 11:10:34,575 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1857 transitions. Word has length 430 [2022-11-16 11:10:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:34,575 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1857 transitions. [2022-11-16 11:10:34,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1857 transitions. [2022-11-16 11:10:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:34,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:34,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:34,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-11-16 11:10:34,578 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:34,579 INFO L85 PathProgramCache]: Analyzing trace with hash 461370686, now seen corresponding path program 1 times [2022-11-16 11:10:34,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:34,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276506275] [2022-11-16 11:10:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:34,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:35,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:35,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:35,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276506275] [2022-11-16 11:10:35,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276506275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:35,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:35,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433488849] [2022-11-16 11:10:35,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:35,302 INFO L87 Difference]: Start difference. First operand 1240 states and 1857 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:36,057 INFO L93 Difference]: Finished difference Result 2478 states and 3712 transitions. [2022-11-16 11:10:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:36,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:36,060 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:36,060 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:36,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:36,061 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1483 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:36,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 2838 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4979757085020242) internal successors, (1850), 1235 states have internal predecessors, (1850), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1856 transitions. [2022-11-16 11:10:36,097 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1856 transitions. Word has length 430 [2022-11-16 11:10:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:36,098 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1856 transitions. [2022-11-16 11:10:36,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1856 transitions. [2022-11-16 11:10:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:36,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:36,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:36,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-11-16 11:10:36,101 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1567215424, now seen corresponding path program 1 times [2022-11-16 11:10:36,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:36,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946082842] [2022-11-16 11:10:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:36,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946082842] [2022-11-16 11:10:36,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946082842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:36,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:36,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267766837] [2022-11-16 11:10:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:36,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:36,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:36,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:36,838 INFO L87 Difference]: Start difference. First operand 1240 states and 1856 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:37,585 INFO L93 Difference]: Finished difference Result 2478 states and 3710 transitions. [2022-11-16 11:10:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:37,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:37,588 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:37,588 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:37,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:37,589 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1485 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:37,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 2838 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:37,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.497165991902834) internal successors, (1849), 1235 states have internal predecessors, (1849), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1855 transitions. [2022-11-16 11:10:37,624 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1855 transitions. Word has length 430 [2022-11-16 11:10:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:37,625 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1855 transitions. [2022-11-16 11:10:37,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1855 transitions. [2022-11-16 11:10:37,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:37,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:37,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:37,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-11-16 11:10:37,627 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:37,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:37,628 INFO L85 PathProgramCache]: Analyzing trace with hash -691196418, now seen corresponding path program 1 times [2022-11-16 11:10:37,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:37,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10001948] [2022-11-16 11:10:37,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:37,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:38,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:38,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10001948] [2022-11-16 11:10:38,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10001948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:38,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:38,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011284433] [2022-11-16 11:10:38,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:38,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:38,264 INFO L87 Difference]: Start difference. First operand 1240 states and 1855 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:39,013 INFO L93 Difference]: Finished difference Result 2478 states and 3708 transitions. [2022-11-16 11:10:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:39,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:39,015 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:39,015 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:39,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:39,016 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1487 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:39,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 2838 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4963562753036437) internal successors, (1848), 1235 states have internal predecessors, (1848), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1854 transitions. [2022-11-16 11:10:39,051 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1854 transitions. Word has length 430 [2022-11-16 11:10:39,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:39,051 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1854 transitions. [2022-11-16 11:10:39,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1854 transitions. [2022-11-16 11:10:39,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:39,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:39,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:39,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-11-16 11:10:39,055 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:39,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:39,056 INFO L85 PathProgramCache]: Analyzing trace with hash 569720832, now seen corresponding path program 1 times [2022-11-16 11:10:39,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:39,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058864662] [2022-11-16 11:10:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:39,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:39,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:39,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:39,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058864662] [2022-11-16 11:10:39,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058864662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:39,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:39,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844960992] [2022-11-16 11:10:39,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:39,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:39,714 INFO L87 Difference]: Start difference. First operand 1240 states and 1854 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:40,507 INFO L93 Difference]: Finished difference Result 2478 states and 3706 transitions. [2022-11-16 11:10:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:40,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:40,509 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:40,509 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:40,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:40,510 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1489 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:40,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 2838 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4955465587044534) internal successors, (1847), 1235 states have internal predecessors, (1847), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1853 transitions. [2022-11-16 11:10:40,546 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1853 transitions. Word has length 430 [2022-11-16 11:10:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:40,546 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1853 transitions. [2022-11-16 11:10:40,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1853 transitions. [2022-11-16 11:10:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:40,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:40,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:40,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-11-16 11:10:40,549 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash 771544766, now seen corresponding path program 1 times [2022-11-16 11:10:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:40,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175229242] [2022-11-16 11:10:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:41,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:41,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:41,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175229242] [2022-11-16 11:10:41,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175229242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:41,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:41,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722942959] [2022-11-16 11:10:41,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:41,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:41,216 INFO L87 Difference]: Start difference. First operand 1240 states and 1853 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:41,981 INFO L93 Difference]: Finished difference Result 2478 states and 3704 transitions. [2022-11-16 11:10:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:41,983 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:41,983 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:41,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:41,984 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1491 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:41,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 2838 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4947368421052631) internal successors, (1846), 1235 states have internal predecessors, (1846), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1852 transitions. [2022-11-16 11:10:42,020 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1852 transitions. Word has length 430 [2022-11-16 11:10:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:42,021 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1852 transitions. [2022-11-16 11:10:42,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1852 transitions. [2022-11-16 11:10:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:42,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:42,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:42,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-11-16 11:10:42,024 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash 354148160, now seen corresponding path program 1 times [2022-11-16 11:10:42,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:42,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259176064] [2022-11-16 11:10:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:42,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:42,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:42,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259176064] [2022-11-16 11:10:42,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259176064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:42,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:42,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194852458] [2022-11-16 11:10:42,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:42,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:42,663 INFO L87 Difference]: Start difference. First operand 1240 states and 1852 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:43,397 INFO L93 Difference]: Finished difference Result 2478 states and 3702 transitions. [2022-11-16 11:10:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:43,400 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:43,400 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:43,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:43,401 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1493 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:43,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 2838 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4939271255060729) internal successors, (1845), 1235 states have internal predecessors, (1845), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1851 transitions. [2022-11-16 11:10:43,436 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1851 transitions. Word has length 430 [2022-11-16 11:10:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:43,436 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1851 transitions. [2022-11-16 11:10:43,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1851 transitions. [2022-11-16 11:10:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:43,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:43,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:43,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-11-16 11:10:43,439 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:43,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash -377819266, now seen corresponding path program 1 times [2022-11-16 11:10:43,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:43,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588511792] [2022-11-16 11:10:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:43,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:44,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:44,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588511792] [2022-11-16 11:10:44,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588511792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:44,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:44,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255787432] [2022-11-16 11:10:44,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:44,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:44,117 INFO L87 Difference]: Start difference. First operand 1240 states and 1851 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:44,863 INFO L93 Difference]: Finished difference Result 2478 states and 3700 transitions. [2022-11-16 11:10:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:44,865 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:44,866 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:44,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:44,867 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1495 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:44,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 2838 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:44,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4931174089068826) internal successors, (1844), 1235 states have internal predecessors, (1844), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1850 transitions. [2022-11-16 11:10:44,908 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1850 transitions. Word has length 430 [2022-11-16 11:10:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:44,908 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1850 transitions. [2022-11-16 11:10:44,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1850 transitions. [2022-11-16 11:10:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:44,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:44,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:44,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-11-16 11:10:44,911 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:44,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash -870445440, now seen corresponding path program 1 times [2022-11-16 11:10:44,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:44,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33840112] [2022-11-16 11:10:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:44,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:45,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33840112] [2022-11-16 11:10:45,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33840112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:45,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:45,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:45,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845772358] [2022-11-16 11:10:45,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:45,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:45,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:45,628 INFO L87 Difference]: Start difference. First operand 1240 states and 1850 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:46,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:46,380 INFO L93 Difference]: Finished difference Result 2478 states and 3698 transitions. [2022-11-16 11:10:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:46,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:46,382 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:46,382 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:46,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:46,384 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1497 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:46,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2838 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4923076923076923) internal successors, (1843), 1235 states have internal predecessors, (1843), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1849 transitions. [2022-11-16 11:10:46,418 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1849 transitions. Word has length 430 [2022-11-16 11:10:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:46,418 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1849 transitions. [2022-11-16 11:10:46,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1849 transitions. [2022-11-16 11:10:46,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:46,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:46,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:46,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-11-16 11:10:46,421 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:46,421 INFO L85 PathProgramCache]: Analyzing trace with hash -793544642, now seen corresponding path program 1 times [2022-11-16 11:10:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:46,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794374598] [2022-11-16 11:10:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:46,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:47,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:47,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794374598] [2022-11-16 11:10:47,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794374598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:47,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:47,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:47,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18205545] [2022-11-16 11:10:47,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:47,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:47,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:47,077 INFO L87 Difference]: Start difference. First operand 1240 states and 1849 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:47,818 INFO L93 Difference]: Finished difference Result 2478 states and 3696 transitions. [2022-11-16 11:10:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:47,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:47,820 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:47,820 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:47,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:47,821 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1499 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:47,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 2838 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.491497975708502) internal successors, (1842), 1235 states have internal predecessors, (1842), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1848 transitions. [2022-11-16 11:10:47,859 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1848 transitions. Word has length 430 [2022-11-16 11:10:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:47,859 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1848 transitions. [2022-11-16 11:10:47,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1848 transitions. [2022-11-16 11:10:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:47,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:47,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-11-16 11:10:47,863 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash 940559808, now seen corresponding path program 1 times [2022-11-16 11:10:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:47,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134853377] [2022-11-16 11:10:47,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:47,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:48,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:48,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:48,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134853377] [2022-11-16 11:10:48,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134853377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:48,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:48,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:48,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37507170] [2022-11-16 11:10:48,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:48,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:48,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:48,606 INFO L87 Difference]: Start difference. First operand 1240 states and 1848 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:49,349 INFO L93 Difference]: Finished difference Result 2478 states and 3694 transitions. [2022-11-16 11:10:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:49,351 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:49,351 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:49,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:49,352 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1501 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:49,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2838 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4906882591093118) internal successors, (1841), 1235 states have internal predecessors, (1841), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1847 transitions. [2022-11-16 11:10:49,388 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1847 transitions. Word has length 430 [2022-11-16 11:10:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:49,388 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1847 transitions. [2022-11-16 11:10:49,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1847 transitions. [2022-11-16 11:10:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:49,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:49,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:49,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-11-16 11:10:49,391 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1779593470, now seen corresponding path program 1 times [2022-11-16 11:10:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:49,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560542165] [2022-11-16 11:10:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:50,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:50,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:50,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560542165] [2022-11-16 11:10:50,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560542165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:50,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:50,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:50,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937395762] [2022-11-16 11:10:50,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:50,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:50,134 INFO L87 Difference]: Start difference. First operand 1240 states and 1847 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:50,850 INFO L93 Difference]: Finished difference Result 2478 states and 3692 transitions. [2022-11-16 11:10:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:50,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:50,851 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:50,852 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:50,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:50,853 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1503 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:50,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 2838 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4898785425101215) internal successors, (1840), 1235 states have internal predecessors, (1840), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1846 transitions. [2022-11-16 11:10:50,890 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1846 transitions. Word has length 430 [2022-11-16 11:10:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:50,890 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1846 transitions. [2022-11-16 11:10:50,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1846 transitions. [2022-11-16 11:10:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:50,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:50,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:50,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-11-16 11:10:50,893 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash 721755392, now seen corresponding path program 1 times [2022-11-16 11:10:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:50,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838989018] [2022-11-16 11:10:50,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:50,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:51,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838989018] [2022-11-16 11:10:51,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838989018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:51,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:51,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131137962] [2022-11-16 11:10:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:51,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:51,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:51,562 INFO L87 Difference]: Start difference. First operand 1240 states and 1846 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:52,292 INFO L93 Difference]: Finished difference Result 2478 states and 3690 transitions. [2022-11-16 11:10:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:52,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:52,294 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:52,294 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:52,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:52,295 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1505 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:52,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2838 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4890688259109313) internal successors, (1839), 1235 states have internal predecessors, (1839), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1845 transitions. [2022-11-16 11:10:52,331 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1845 transitions. Word has length 430 [2022-11-16 11:10:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:52,332 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1845 transitions. [2022-11-16 11:10:52,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1845 transitions. [2022-11-16 11:10:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:52,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:52,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:52,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-11-16 11:10:52,334 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1157375554, now seen corresponding path program 1 times [2022-11-16 11:10:52,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:52,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339309418] [2022-11-16 11:10:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:52,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:52,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:52,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:53,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339309418] [2022-11-16 11:10:53,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339309418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:53,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:53,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678498903] [2022-11-16 11:10:53,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:53,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:53,001 INFO L87 Difference]: Start difference. First operand 1240 states and 1845 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:53,728 INFO L93 Difference]: Finished difference Result 2478 states and 3688 transitions. [2022-11-16 11:10:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:53,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:53,730 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:53,730 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:53,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:53,731 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1507 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:53,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 2838 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.488259109311741) internal successors, (1838), 1235 states have internal predecessors, (1838), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1844 transitions. [2022-11-16 11:10:53,767 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1844 transitions. Word has length 430 [2022-11-16 11:10:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:53,768 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1844 transitions. [2022-11-16 11:10:53,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1844 transitions. [2022-11-16 11:10:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:53,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:53,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:53,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-11-16 11:10:53,771 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:53,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1743651776, now seen corresponding path program 1 times [2022-11-16 11:10:53,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:53,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778536175] [2022-11-16 11:10:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:53,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:54,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778536175] [2022-11-16 11:10:54,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778536175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:54,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:54,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474313312] [2022-11-16 11:10:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:54,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:54,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:54,811 INFO L87 Difference]: Start difference. First operand 1240 states and 1844 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:55,578 INFO L93 Difference]: Finished difference Result 2478 states and 3686 transitions. [2022-11-16 11:10:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:55,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:55,580 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:55,580 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:55,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:55,581 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1509 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:55,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2838 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:55,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4874493927125505) internal successors, (1837), 1235 states have internal predecessors, (1837), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1843 transitions. [2022-11-16 11:10:55,617 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1843 transitions. Word has length 430 [2022-11-16 11:10:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:55,617 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1843 transitions. [2022-11-16 11:10:55,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1843 transitions. [2022-11-16 11:10:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:55,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:55,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:55,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-11-16 11:10:55,620 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash 133411454, now seen corresponding path program 1 times [2022-11-16 11:10:55,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:55,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450234322] [2022-11-16 11:10:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:55,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450234322] [2022-11-16 11:10:56,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450234322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:56,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:56,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620396147] [2022-11-16 11:10:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:56,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:56,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:56,428 INFO L87 Difference]: Start difference. First operand 1240 states and 1843 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:57,166 INFO L93 Difference]: Finished difference Result 2478 states and 3684 transitions. [2022-11-16 11:10:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:57,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:57,168 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:57,168 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:57,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:57,169 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1511 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:57,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 2838 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:10:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4866396761133602) internal successors, (1836), 1235 states have internal predecessors, (1836), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1842 transitions. [2022-11-16 11:10:57,206 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1842 transitions. Word has length 430 [2022-11-16 11:10:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:57,206 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1842 transitions. [2022-11-16 11:10:57,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1842 transitions. [2022-11-16 11:10:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:57,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:57,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:57,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-11-16 11:10:57,209 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash -750097536, now seen corresponding path program 1 times [2022-11-16 11:10:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:57,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702979905] [2022-11-16 11:10:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:57,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:57,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702979905] [2022-11-16 11:10:57,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702979905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:57,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:57,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:57,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022734834] [2022-11-16 11:10:57,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:57,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:57,876 INFO L87 Difference]: Start difference. First operand 1240 states and 1842 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:58,574 INFO L93 Difference]: Finished difference Result 2478 states and 3682 transitions. [2022-11-16 11:10:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:58,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:10:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:58,575 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:10:58,576 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:10:58,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:58,577 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1513 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:58,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2838 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:10:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:10:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:10:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.48582995951417) internal successors, (1835), 1235 states have internal predecessors, (1835), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1841 transitions. [2022-11-16 11:10:58,611 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1841 transitions. Word has length 430 [2022-11-16 11:10:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1841 transitions. [2022-11-16 11:10:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1841 transitions. [2022-11-16 11:10:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:10:58,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:58,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:58,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-11-16 11:10:58,613 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:58,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1806828738, now seen corresponding path program 1 times [2022-11-16 11:10:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:58,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112829644] [2022-11-16 11:10:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:58,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:10:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:10:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:10:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:10:59,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:59,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112829644] [2022-11-16 11:10:59,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112829644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:59,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:59,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941364891] [2022-11-16 11:10:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:59,271 INFO L87 Difference]: Start difference. First operand 1240 states and 1841 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:00,087 INFO L93 Difference]: Finished difference Result 2478 states and 3680 transitions. [2022-11-16 11:11:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:00,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:00,089 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:00,089 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:00,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:00,090 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1515 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:00,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 2838 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:11:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4850202429149797) internal successors, (1834), 1235 states have internal predecessors, (1834), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1840 transitions. [2022-11-16 11:11:00,123 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1840 transitions. Word has length 430 [2022-11-16 11:11:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:00,123 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1840 transitions. [2022-11-16 11:11:00,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1840 transitions. [2022-11-16 11:11:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:00,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:00,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-11-16 11:11:00,126 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:00,126 INFO L85 PathProgramCache]: Analyzing trace with hash -775787840, now seen corresponding path program 1 times [2022-11-16 11:11:00,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:00,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155028356] [2022-11-16 11:11:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:00,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:00,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155028356] [2022-11-16 11:11:00,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155028356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:00,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:00,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:00,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989837726] [2022-11-16 11:11:00,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:00,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:00,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:00,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:00,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:00,780 INFO L87 Difference]: Start difference. First operand 1240 states and 1840 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:01,472 INFO L93 Difference]: Finished difference Result 2478 states and 3678 transitions. [2022-11-16 11:11:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:01,474 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:01,474 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:01,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:01,475 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1517 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:01,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 2838 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4842105263157894) internal successors, (1833), 1235 states have internal predecessors, (1833), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1839 transitions. [2022-11-16 11:11:01,509 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1839 transitions. Word has length 430 [2022-11-16 11:11:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:01,510 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1839 transitions. [2022-11-16 11:11:01,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1839 transitions. [2022-11-16 11:11:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:01,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:01,512 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:01,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-11-16 11:11:01,512 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1652470782, now seen corresponding path program 1 times [2022-11-16 11:11:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:01,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800629302] [2022-11-16 11:11:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:01,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:02,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800629302] [2022-11-16 11:11:02,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800629302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:02,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:02,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762845734] [2022-11-16 11:11:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:02,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:02,159 INFO L87 Difference]: Start difference. First operand 1240 states and 1839 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:02,872 INFO L93 Difference]: Finished difference Result 2478 states and 3676 transitions. [2022-11-16 11:11:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:02,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:02,874 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:02,874 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:02,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:02,875 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1519 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:02,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 2838 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:11:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4834008097165992) internal successors, (1832), 1235 states have internal predecessors, (1832), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1838 transitions. [2022-11-16 11:11:02,909 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1838 transitions. Word has length 430 [2022-11-16 11:11:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:02,909 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1838 transitions. [2022-11-16 11:11:02,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1838 transitions. [2022-11-16 11:11:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:02,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:02,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:02,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-11-16 11:11:02,911 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1770912256, now seen corresponding path program 1 times [2022-11-16 11:11:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:02,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963069500] [2022-11-16 11:11:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:03,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:03,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963069500] [2022-11-16 11:11:03,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963069500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:03,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:03,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903463363] [2022-11-16 11:11:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:03,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:03,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:03,596 INFO L87 Difference]: Start difference. First operand 1240 states and 1838 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:04,297 INFO L93 Difference]: Finished difference Result 2478 states and 3674 transitions. [2022-11-16 11:11:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:04,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:04,299 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:04,299 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:04,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:04,300 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1521 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:04,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2838 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:04,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4825910931174089) internal successors, (1831), 1235 states have internal predecessors, (1831), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1837 transitions. [2022-11-16 11:11:04,337 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1837 transitions. Word has length 430 [2022-11-16 11:11:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:04,338 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1837 transitions. [2022-11-16 11:11:04,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1837 transitions. [2022-11-16 11:11:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:04,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:04,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:04,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-11-16 11:11:04,340 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash -202253122, now seen corresponding path program 1 times [2022-11-16 11:11:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:04,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141742715] [2022-11-16 11:11:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141742715] [2022-11-16 11:11:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141742715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:05,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:05,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303945006] [2022-11-16 11:11:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:05,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:05,048 INFO L87 Difference]: Start difference. First operand 1240 states and 1837 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:05,738 INFO L93 Difference]: Finished difference Result 2478 states and 3672 transitions. [2022-11-16 11:11:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:05,740 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:05,740 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:05,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:05,741 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1523 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:05,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 2838 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:05,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4817813765182186) internal successors, (1830), 1235 states have internal predecessors, (1830), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1836 transitions. [2022-11-16 11:11:05,776 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1836 transitions. Word has length 430 [2022-11-16 11:11:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:05,776 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1836 transitions. [2022-11-16 11:11:05,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1836 transitions. [2022-11-16 11:11:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:05,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:05,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:05,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-11-16 11:11:05,779 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1849616064, now seen corresponding path program 1 times [2022-11-16 11:11:05,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:05,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432964893] [2022-11-16 11:11:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:05,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:06,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:06,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432964893] [2022-11-16 11:11:06,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432964893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:06,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:06,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:06,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086762914] [2022-11-16 11:11:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:06,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:06,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:06,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:06,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:06,437 INFO L87 Difference]: Start difference. First operand 1240 states and 1836 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:07,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:07,127 INFO L93 Difference]: Finished difference Result 2478 states and 3670 transitions. [2022-11-16 11:11:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:07,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:07,129 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:07,129 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:07,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:07,131 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1525 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:07,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 2838 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4809716599190283) internal successors, (1829), 1235 states have internal predecessors, (1829), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1835 transitions. [2022-11-16 11:11:07,165 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1835 transitions. Word has length 430 [2022-11-16 11:11:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:07,165 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1835 transitions. [2022-11-16 11:11:07,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1835 transitions. [2022-11-16 11:11:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:07,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:07,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-11-16 11:11:07,168 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash 152270206, now seen corresponding path program 1 times [2022-11-16 11:11:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:07,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119166545] [2022-11-16 11:11:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:07,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:07,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:07,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:07,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119166545] [2022-11-16 11:11:07,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119166545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:07,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:07,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83615175] [2022-11-16 11:11:07,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:07,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:07,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:07,893 INFO L87 Difference]: Start difference. First operand 1240 states and 1835 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:08,694 INFO L93 Difference]: Finished difference Result 2478 states and 3668 transitions. [2022-11-16 11:11:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:08,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:08,695 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:08,695 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:08,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:08,696 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1527 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:08,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 2838 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:11:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.480161943319838) internal successors, (1828), 1235 states have internal predecessors, (1828), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1834 transitions. [2022-11-16 11:11:08,734 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1834 transitions. Word has length 430 [2022-11-16 11:11:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:08,734 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1834 transitions. [2022-11-16 11:11:08,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1834 transitions. [2022-11-16 11:11:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:08,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:08,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:08,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-11-16 11:11:08,738 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1569732480, now seen corresponding path program 1 times [2022-11-16 11:11:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:08,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738874406] [2022-11-16 11:11:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:09,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738874406] [2022-11-16 11:11:09,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738874406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:09,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:09,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094311624] [2022-11-16 11:11:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:09,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:09,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:09,489 INFO L87 Difference]: Start difference. First operand 1240 states and 1834 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:10,209 INFO L93 Difference]: Finished difference Result 2478 states and 3666 transitions. [2022-11-16 11:11:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:10,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:10,211 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:10,211 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:10,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:10,212 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1529 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:10,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 2838 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4793522267206478) internal successors, (1827), 1235 states have internal predecessors, (1827), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1833 transitions. [2022-11-16 11:11:10,248 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1833 transitions. Word has length 430 [2022-11-16 11:11:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:10,248 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1833 transitions. [2022-11-16 11:11:10,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1833 transitions. [2022-11-16 11:11:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:10,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:10,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-11-16 11:11:10,251 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:10,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:10,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1632599614, now seen corresponding path program 1 times [2022-11-16 11:11:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731358187] [2022-11-16 11:11:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:10,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:10,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731358187] [2022-11-16 11:11:10,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731358187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:10,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:10,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:10,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227722618] [2022-11-16 11:11:10,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:10,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:10,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:10,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:10,918 INFO L87 Difference]: Start difference. First operand 1240 states and 1833 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:11,624 INFO L93 Difference]: Finished difference Result 2478 states and 3664 transitions. [2022-11-16 11:11:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:11,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:11,626 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:11,626 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:11,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:11,627 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1531 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:11,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 2838 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4785425101214575) internal successors, (1826), 1235 states have internal predecessors, (1826), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1832 transitions. [2022-11-16 11:11:11,663 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1832 transitions. Word has length 430 [2022-11-16 11:11:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:11,663 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1832 transitions. [2022-11-16 11:11:11,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1832 transitions. [2022-11-16 11:11:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:11,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:11,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:11,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-11-16 11:11:11,666 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:11,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1800534080, now seen corresponding path program 1 times [2022-11-16 11:11:11,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:11,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513184871] [2022-11-16 11:11:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513184871] [2022-11-16 11:11:12,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513184871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:12,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:12,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092672138] [2022-11-16 11:11:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:12,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:12,337 INFO L87 Difference]: Start difference. First operand 1240 states and 1832 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:13,077 INFO L93 Difference]: Finished difference Result 2478 states and 3662 transitions. [2022-11-16 11:11:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:13,079 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:13,079 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:13,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:13,080 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1533 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:13,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 2838 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:11:13,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4777327935222673) internal successors, (1825), 1235 states have internal predecessors, (1825), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1831 transitions. [2022-11-16 11:11:13,117 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1831 transitions. Word has length 430 [2022-11-16 11:11:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:13,117 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1831 transitions. [2022-11-16 11:11:13,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1831 transitions. [2022-11-16 11:11:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:13,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:13,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:13,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-11-16 11:11:13,120 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:13,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:13,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2064774910, now seen corresponding path program 1 times [2022-11-16 11:11:13,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:13,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154509220] [2022-11-16 11:11:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:13,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154509220] [2022-11-16 11:11:13,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154509220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:13,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:13,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025494455] [2022-11-16 11:11:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:13,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:13,911 INFO L87 Difference]: Start difference. First operand 1240 states and 1831 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:14,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:14,624 INFO L93 Difference]: Finished difference Result 2478 states and 3660 transitions. [2022-11-16 11:11:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:14,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:14,626 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:14,626 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:14,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:14,627 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1535 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:14,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 2838 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.476923076923077) internal successors, (1824), 1235 states have internal predecessors, (1824), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1830 transitions. [2022-11-16 11:11:14,666 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1830 transitions. Word has length 430 [2022-11-16 11:11:14,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:14,666 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1830 transitions. [2022-11-16 11:11:14,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1830 transitions. [2022-11-16 11:11:14,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:14,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:14,669 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:14,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-11-16 11:11:14,669 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1116722944, now seen corresponding path program 1 times [2022-11-16 11:11:14,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:14,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226839338] [2022-11-16 11:11:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:15,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:15,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226839338] [2022-11-16 11:11:15,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226839338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:15,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:15,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:15,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577493979] [2022-11-16 11:11:15,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:15,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:15,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:15,335 INFO L87 Difference]: Start difference. First operand 1240 states and 1830 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:16,038 INFO L93 Difference]: Finished difference Result 2478 states and 3658 transitions. [2022-11-16 11:11:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:16,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:16,040 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:16,040 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:16,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:16,041 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1537 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:16,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2838 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4761133603238867) internal successors, (1823), 1235 states have internal predecessors, (1823), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1829 transitions. [2022-11-16 11:11:16,078 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1829 transitions. Word has length 430 [2022-11-16 11:11:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:16,078 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1829 transitions. [2022-11-16 11:11:16,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1829 transitions. [2022-11-16 11:11:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:16,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:16,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:16,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-11-16 11:11:16,081 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1405542334, now seen corresponding path program 1 times [2022-11-16 11:11:16,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:16,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482255892] [2022-11-16 11:11:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:16,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:16,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482255892] [2022-11-16 11:11:16,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482255892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:16,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:16,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:16,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48511638] [2022-11-16 11:11:16,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:16,754 INFO L87 Difference]: Start difference. First operand 1240 states and 1829 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:17,451 INFO L93 Difference]: Finished difference Result 2478 states and 3656 transitions. [2022-11-16 11:11:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:17,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:17,453 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:17,453 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:17,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:17,454 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1539 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:17,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 2838 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4753036437246962) internal successors, (1822), 1235 states have internal predecessors, (1822), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1828 transitions. [2022-11-16 11:11:17,491 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1828 transitions. Word has length 430 [2022-11-16 11:11:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:17,492 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1828 transitions. [2022-11-16 11:11:17,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1828 transitions. [2022-11-16 11:11:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:17,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:17,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:17,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-11-16 11:11:17,496 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:17,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1490471360, now seen corresponding path program 1 times [2022-11-16 11:11:17,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:17,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471051699] [2022-11-16 11:11:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:17,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:18,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471051699] [2022-11-16 11:11:18,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471051699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:18,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:18,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758579759] [2022-11-16 11:11:18,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:18,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:18,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:18,189 INFO L87 Difference]: Start difference. First operand 1240 states and 1828 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:18,975 INFO L93 Difference]: Finished difference Result 2478 states and 3654 transitions. [2022-11-16 11:11:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:18,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:18,977 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:18,978 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:18,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:18,978 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1541 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:18,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2838 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:11:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.474493927125506) internal successors, (1821), 1235 states have internal predecessors, (1821), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1827 transitions. [2022-11-16 11:11:19,015 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1827 transitions. Word has length 430 [2022-11-16 11:11:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:19,015 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1827 transitions. [2022-11-16 11:11:19,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1827 transitions. [2022-11-16 11:11:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:19,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:19,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-11-16 11:11:19,017 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:19,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:19,018 INFO L85 PathProgramCache]: Analyzing trace with hash 668612734, now seen corresponding path program 1 times [2022-11-16 11:11:19,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:19,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897201351] [2022-11-16 11:11:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:19,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:19,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:19,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:19,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897201351] [2022-11-16 11:11:19,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897201351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:19,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:19,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:19,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058811824] [2022-11-16 11:11:19,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:19,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:19,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:19,688 INFO L87 Difference]: Start difference. First operand 1240 states and 1827 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:20,411 INFO L93 Difference]: Finished difference Result 2478 states and 3652 transitions. [2022-11-16 11:11:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:20,413 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:20,413 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:20,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:20,414 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1543 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:20,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 2838 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:11:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:20,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4736842105263157) internal successors, (1820), 1235 states have internal predecessors, (1820), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1826 transitions. [2022-11-16 11:11:20,461 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1826 transitions. Word has length 430 [2022-11-16 11:11:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:20,462 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1826 transitions. [2022-11-16 11:11:20,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1826 transitions. [2022-11-16 11:11:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:20,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:20,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:20,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-11-16 11:11:20,464 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:20,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 512632192, now seen corresponding path program 1 times [2022-11-16 11:11:20,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:20,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538329264] [2022-11-16 11:11:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:20,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:21,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538329264] [2022-11-16 11:11:21,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538329264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:21,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:21,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521434671] [2022-11-16 11:11:21,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:21,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:21,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:21,152 INFO L87 Difference]: Start difference. First operand 1240 states and 1826 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:21,836 INFO L93 Difference]: Finished difference Result 2478 states and 3650 transitions. [2022-11-16 11:11:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:21,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:21,838 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:21,838 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:21,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:21,839 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1545 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:21,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 2838 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4728744939271254) internal successors, (1819), 1235 states have internal predecessors, (1819), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1825 transitions. [2022-11-16 11:11:21,895 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1825 transitions. Word has length 430 [2022-11-16 11:11:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:21,895 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1825 transitions. [2022-11-16 11:11:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1825 transitions. [2022-11-16 11:11:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:21,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:21,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:21,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-11-16 11:11:21,898 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:21,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 850919742, now seen corresponding path program 1 times [2022-11-16 11:11:21,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:21,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414457609] [2022-11-16 11:11:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:21,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:22,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:22,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:22,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:22,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414457609] [2022-11-16 11:11:22,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414457609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:22,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:22,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:22,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455837547] [2022-11-16 11:11:22,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:22,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:22,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:22,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:22,580 INFO L87 Difference]: Start difference. First operand 1240 states and 1825 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:23,256 INFO L93 Difference]: Finished difference Result 2478 states and 3648 transitions. [2022-11-16 11:11:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:23,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:23,258 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:23,258 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:23,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:23,259 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1547 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:23,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2838 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4720647773279352) internal successors, (1818), 1235 states have internal predecessors, (1818), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1824 transitions. [2022-11-16 11:11:23,293 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1824 transitions. Word has length 430 [2022-11-16 11:11:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1824 transitions. [2022-11-16 11:11:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1824 transitions. [2022-11-16 11:11:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:23,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:23,296 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:23,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-11-16 11:11:23,296 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:23,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1512921920, now seen corresponding path program 1 times [2022-11-16 11:11:23,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:23,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723256165] [2022-11-16 11:11:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:24,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:24,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:24,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723256165] [2022-11-16 11:11:24,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723256165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:24,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:24,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731883234] [2022-11-16 11:11:24,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:24,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:24,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:24,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:24,045 INFO L87 Difference]: Start difference. First operand 1240 states and 1824 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:24,727 INFO L93 Difference]: Finished difference Result 2478 states and 3646 transitions. [2022-11-16 11:11:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:24,733 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:24,733 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:24,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:24,734 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1549 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:24,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 2838 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.471255060728745) internal successors, (1817), 1235 states have internal predecessors, (1817), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1823 transitions. [2022-11-16 11:11:24,791 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1823 transitions. Word has length 430 [2022-11-16 11:11:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:24,791 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1823 transitions. [2022-11-16 11:11:24,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1823 transitions. [2022-11-16 11:11:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:24,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:24,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-11-16 11:11:24,795 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1858877950, now seen corresponding path program 1 times [2022-11-16 11:11:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:24,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501884375] [2022-11-16 11:11:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:25,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:25,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501884375] [2022-11-16 11:11:25,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501884375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:25,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:25,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144430304] [2022-11-16 11:11:25,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:25,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:25,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:25,473 INFO L87 Difference]: Start difference. First operand 1240 states and 1823 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:26,184 INFO L93 Difference]: Finished difference Result 2478 states and 3644 transitions. [2022-11-16 11:11:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:26,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:26,186 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:26,186 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:26,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:26,187 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1551 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:26,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 2838 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4704453441295546) internal successors, (1816), 1235 states have internal predecessors, (1816), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1822 transitions. [2022-11-16 11:11:26,223 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1822 transitions. Word has length 430 [2022-11-16 11:11:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:26,223 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1822 transitions. [2022-11-16 11:11:26,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1822 transitions. [2022-11-16 11:11:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:26,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:26,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:26,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-11-16 11:11:26,226 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:26,226 INFO L85 PathProgramCache]: Analyzing trace with hash 453686272, now seen corresponding path program 1 times [2022-11-16 11:11:26,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:26,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601833720] [2022-11-16 11:11:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:26,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:26,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601833720] [2022-11-16 11:11:26,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601833720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:26,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:26,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105883674] [2022-11-16 11:11:26,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:26,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:26,893 INFO L87 Difference]: Start difference. First operand 1240 states and 1822 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:27,590 INFO L93 Difference]: Finished difference Result 2478 states and 3642 transitions. [2022-11-16 11:11:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:27,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:27,592 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:27,592 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:27,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:27,593 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1553 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 2838 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4696356275303644) internal successors, (1815), 1235 states have internal predecessors, (1815), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1821 transitions. [2022-11-16 11:11:27,630 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1821 transitions. Word has length 430 [2022-11-16 11:11:27,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:27,631 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1821 transitions. [2022-11-16 11:11:27,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:27,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1821 transitions. [2022-11-16 11:11:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:27,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:27,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:27,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-11-16 11:11:27,633 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:27,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1434641086, now seen corresponding path program 1 times [2022-11-16 11:11:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:27,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558288362] [2022-11-16 11:11:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:27,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:28,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:28,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:28,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558288362] [2022-11-16 11:11:28,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558288362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:28,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:28,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626208057] [2022-11-16 11:11:28,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:28,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:28,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:28,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:28,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:28,371 INFO L87 Difference]: Start difference. First operand 1240 states and 1821 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:29,068 INFO L93 Difference]: Finished difference Result 2478 states and 3640 transitions. [2022-11-16 11:11:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:29,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:29,070 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:29,070 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:29,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:29,071 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1555 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:29,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2838 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.468825910931174) internal successors, (1814), 1235 states have internal predecessors, (1814), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1820 transitions. [2022-11-16 11:11:29,107 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1820 transitions. Word has length 430 [2022-11-16 11:11:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:29,107 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1820 transitions. [2022-11-16 11:11:29,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1820 transitions. [2022-11-16 11:11:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:29,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:29,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:29,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-11-16 11:11:29,110 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:29,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:29,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2102022976, now seen corresponding path program 1 times [2022-11-16 11:11:29,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:29,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976135198] [2022-11-16 11:11:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:29,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:29,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:29,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976135198] [2022-11-16 11:11:29,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976135198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:29,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:29,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:29,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824552807] [2022-11-16 11:11:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:29,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:29,788 INFO L87 Difference]: Start difference. First operand 1240 states and 1820 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:30,479 INFO L93 Difference]: Finished difference Result 2478 states and 3638 transitions. [2022-11-16 11:11:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:30,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:30,481 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:30,481 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:30,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:30,482 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1557 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:30,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2838 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4680161943319838) internal successors, (1813), 1235 states have internal predecessors, (1813), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1819 transitions. [2022-11-16 11:11:30,519 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1819 transitions. Word has length 430 [2022-11-16 11:11:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:30,520 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1819 transitions. [2022-11-16 11:11:30,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1819 transitions. [2022-11-16 11:11:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:30,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:30,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:30,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-11-16 11:11:30,522 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1622672514, now seen corresponding path program 1 times [2022-11-16 11:11:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:30,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547789361] [2022-11-16 11:11:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:31,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:31,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:31,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547789361] [2022-11-16 11:11:31,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547789361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:31,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:31,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940609838] [2022-11-16 11:11:31,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:31,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:31,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:31,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:31,188 INFO L87 Difference]: Start difference. First operand 1240 states and 1819 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:31,869 INFO L93 Difference]: Finished difference Result 2478 states and 3636 transitions. [2022-11-16 11:11:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:31,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:31,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:31,871 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:31,871 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:31,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:31,872 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1559 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:31,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 2838 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4672064777327936) internal successors, (1812), 1235 states have internal predecessors, (1812), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1818 transitions. [2022-11-16 11:11:31,909 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1818 transitions. Word has length 430 [2022-11-16 11:11:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:31,909 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1818 transitions. [2022-11-16 11:11:31,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1818 transitions. [2022-11-16 11:11:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:31,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:31,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-11-16 11:11:31,912 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash 749044352, now seen corresponding path program 1 times [2022-11-16 11:11:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:31,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577255489] [2022-11-16 11:11:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:32,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:32,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:32,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577255489] [2022-11-16 11:11:32,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577255489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:32,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:32,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056888067] [2022-11-16 11:11:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:32,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:32,685 INFO L87 Difference]: Start difference. First operand 1240 states and 1818 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:33,360 INFO L93 Difference]: Finished difference Result 2478 states and 3634 transitions. [2022-11-16 11:11:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:33,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:33,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:33,362 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:33,362 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:33,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:33,363 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1561 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:33,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 2838 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:33,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4663967611336033) internal successors, (1811), 1235 states have internal predecessors, (1811), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1817 transitions. [2022-11-16 11:11:33,399 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1817 transitions. Word has length 430 [2022-11-16 11:11:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:33,399 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1817 transitions. [2022-11-16 11:11:33,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1817 transitions. [2022-11-16 11:11:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:33,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:33,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:33,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-11-16 11:11:33,402 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 59212862, now seen corresponding path program 1 times [2022-11-16 11:11:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:33,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116534285] [2022-11-16 11:11:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:34,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:34,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:34,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116534285] [2022-11-16 11:11:34,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116534285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:34,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:34,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:34,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243719953] [2022-11-16 11:11:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:34,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:34,109 INFO L87 Difference]: Start difference. First operand 1240 states and 1817 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:34,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:34,805 INFO L93 Difference]: Finished difference Result 2478 states and 3632 transitions. [2022-11-16 11:11:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:34,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:34,806 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:34,806 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:34,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:34,807 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1563 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:34,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 2838 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.465587044534413) internal successors, (1810), 1235 states have internal predecessors, (1810), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1816 transitions. [2022-11-16 11:11:34,843 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1816 transitions. Word has length 430 [2022-11-16 11:11:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:34,843 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1816 transitions. [2022-11-16 11:11:34,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1816 transitions. [2022-11-16 11:11:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:34,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:34,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:34,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-11-16 11:11:34,846 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash 707805632, now seen corresponding path program 1 times [2022-11-16 11:11:34,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:34,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118650010] [2022-11-16 11:11:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:34,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:35,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118650010] [2022-11-16 11:11:35,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118650010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:35,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:35,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966257594] [2022-11-16 11:11:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:35,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:35,515 INFO L87 Difference]: Start difference. First operand 1240 states and 1816 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:36,190 INFO L93 Difference]: Finished difference Result 2478 states and 3630 transitions. [2022-11-16 11:11:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:36,192 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:36,192 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:36,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:36,193 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1565 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:36,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 2838 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4647773279352228) internal successors, (1809), 1235 states have internal predecessors, (1809), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1815 transitions. [2022-11-16 11:11:36,230 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1815 transitions. Word has length 430 [2022-11-16 11:11:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:36,230 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1815 transitions. [2022-11-16 11:11:36,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1815 transitions. [2022-11-16 11:11:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:36,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:36,233 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:36,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-11-16 11:11:36,234 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:36,234 INFO L85 PathProgramCache]: Analyzing trace with hash -122848002, now seen corresponding path program 1 times [2022-11-16 11:11:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:36,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717904672] [2022-11-16 11:11:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:36,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:36,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:36,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:37,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717904672] [2022-11-16 11:11:37,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717904672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:37,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:37,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:37,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351493425] [2022-11-16 11:11:37,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:37,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:37,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:37,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:37,001 INFO L87 Difference]: Start difference. First operand 1240 states and 1815 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:37,663 INFO L93 Difference]: Finished difference Result 2478 states and 3628 transitions. [2022-11-16 11:11:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:37,665 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:37,665 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:37,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:37,666 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1567 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:37,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 2838 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4639676113360325) internal successors, (1808), 1235 states have internal predecessors, (1808), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1814 transitions. [2022-11-16 11:11:37,704 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1814 transitions. Word has length 430 [2022-11-16 11:11:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:37,704 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1814 transitions. [2022-11-16 11:11:37,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1814 transitions. [2022-11-16 11:11:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:37,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:37,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:37,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-11-16 11:11:37,706 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1476301056, now seen corresponding path program 1 times [2022-11-16 11:11:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:37,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333292798] [2022-11-16 11:11:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:38,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:38,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:38,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:38,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333292798] [2022-11-16 11:11:38,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333292798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:38,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:38,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:38,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885848730] [2022-11-16 11:11:38,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:38,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:38,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:38,377 INFO L87 Difference]: Start difference. First operand 1240 states and 1814 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:39,062 INFO L93 Difference]: Finished difference Result 2478 states and 3626 transitions. [2022-11-16 11:11:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:39,064 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:39,064 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:39,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:39,065 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1569 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:39,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 2838 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4631578947368422) internal successors, (1807), 1235 states have internal predecessors, (1807), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1813 transitions. [2022-11-16 11:11:39,103 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1813 transitions. Word has length 430 [2022-11-16 11:11:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:39,103 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1813 transitions. [2022-11-16 11:11:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:39,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1813 transitions. [2022-11-16 11:11:39,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:39,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:39,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:39,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-11-16 11:11:39,105 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1948640702, now seen corresponding path program 1 times [2022-11-16 11:11:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:39,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270843267] [2022-11-16 11:11:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:39,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:39,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:39,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270843267] [2022-11-16 11:11:39,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270843267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:39,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:39,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:39,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729469963] [2022-11-16 11:11:39,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:39,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:39,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:39,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:39,791 INFO L87 Difference]: Start difference. First operand 1240 states and 1813 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:40,488 INFO L93 Difference]: Finished difference Result 2478 states and 3624 transitions. [2022-11-16 11:11:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:40,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:40,490 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:40,490 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:40,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:40,491 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1571 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:40,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 2838 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4623481781376517) internal successors, (1806), 1235 states have internal predecessors, (1806), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1812 transitions. [2022-11-16 11:11:40,531 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1812 transitions. Word has length 430 [2022-11-16 11:11:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:40,531 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1812 transitions. [2022-11-16 11:11:40,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1812 transitions. [2022-11-16 11:11:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:40,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:40,533 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:40,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-11-16 11:11:40,534 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1188794304, now seen corresponding path program 1 times [2022-11-16 11:11:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:40,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807199217] [2022-11-16 11:11:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:41,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:41,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807199217] [2022-11-16 11:11:41,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807199217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:41,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:41,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771347716] [2022-11-16 11:11:41,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:41,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:41,234 INFO L87 Difference]: Start difference. First operand 1240 states and 1812 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:41,939 INFO L93 Difference]: Finished difference Result 2478 states and 3622 transitions. [2022-11-16 11:11:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:41,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:41,941 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:41,941 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:41,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:41,942 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1573 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:41,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 2838 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4615384615384615) internal successors, (1805), 1235 states have internal predecessors, (1805), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1811 transitions. [2022-11-16 11:11:41,979 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1811 transitions. Word has length 430 [2022-11-16 11:11:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:41,979 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1811 transitions. [2022-11-16 11:11:41,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1811 transitions. [2022-11-16 11:11:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:41,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:41,982 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:41,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-11-16 11:11:41,982 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1436762498, now seen corresponding path program 1 times [2022-11-16 11:11:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:41,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369612403] [2022-11-16 11:11:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:42,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:42,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:42,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369612403] [2022-11-16 11:11:42,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369612403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:42,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:42,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804900206] [2022-11-16 11:11:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:42,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:42,652 INFO L87 Difference]: Start difference. First operand 1240 states and 1811 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:43,320 INFO L93 Difference]: Finished difference Result 2478 states and 3620 transitions. [2022-11-16 11:11:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:43,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:43,322 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:43,322 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:43,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:43,323 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1575 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:43,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2838 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:43,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4607287449392712) internal successors, (1804), 1235 states have internal predecessors, (1804), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1810 transitions. [2022-11-16 11:11:43,361 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1810 transitions. Word has length 430 [2022-11-16 11:11:43,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:43,361 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1810 transitions. [2022-11-16 11:11:43,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1810 transitions. [2022-11-16 11:11:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:43,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:43,364 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:43,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-11-16 11:11:43,364 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:43,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1313480832, now seen corresponding path program 1 times [2022-11-16 11:11:43,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:43,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427047938] [2022-11-16 11:11:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:44,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:44,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427047938] [2022-11-16 11:11:44,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427047938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:44,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:44,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815918505] [2022-11-16 11:11:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:44,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:44,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:44,072 INFO L87 Difference]: Start difference. First operand 1240 states and 1810 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:44,736 INFO L93 Difference]: Finished difference Result 2478 states and 3618 transitions. [2022-11-16 11:11:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:44,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:44,738 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:44,738 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:44,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:44,739 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1577 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:44,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 2838 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.459919028340081) internal successors, (1803), 1235 states have internal predecessors, (1803), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1809 transitions. [2022-11-16 11:11:44,777 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1809 transitions. Word has length 430 [2022-11-16 11:11:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:44,778 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1809 transitions. [2022-11-16 11:11:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1809 transitions. [2022-11-16 11:11:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:44,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:44,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:44,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-11-16 11:11:44,780 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:44,781 INFO L85 PathProgramCache]: Analyzing trace with hash -826407106, now seen corresponding path program 1 times [2022-11-16 11:11:44,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:44,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906740334] [2022-11-16 11:11:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:44,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:45,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:45,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:45,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906740334] [2022-11-16 11:11:45,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906740334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:45,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:45,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:45,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601520238] [2022-11-16 11:11:45,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:45,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:45,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:45,453 INFO L87 Difference]: Start difference. First operand 1240 states and 1809 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:46,115 INFO L93 Difference]: Finished difference Result 2478 states and 3616 transitions. [2022-11-16 11:11:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:46,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:46,116 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:46,117 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:46,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:46,117 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1579 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:46,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 2838 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4591093117408906) internal successors, (1802), 1235 states have internal predecessors, (1802), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1808 transitions. [2022-11-16 11:11:46,207 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1808 transitions. Word has length 430 [2022-11-16 11:11:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:46,207 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1808 transitions. [2022-11-16 11:11:46,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1808 transitions. [2022-11-16 11:11:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:46,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:46,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:46,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-11-16 11:11:46,210 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:46,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1187438272, now seen corresponding path program 1 times [2022-11-16 11:11:46,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:46,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153207946] [2022-11-16 11:11:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:46,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:46,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153207946] [2022-11-16 11:11:46,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153207946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:46,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:46,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:11:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349962304] [2022-11-16 11:11:46,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:46,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:46,893 INFO L87 Difference]: Start difference. First operand 1240 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:47,596 INFO L93 Difference]: Finished difference Result 2478 states and 3614 transitions. [2022-11-16 11:11:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:11:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:47,598 INFO L225 Difference]: With dead ends: 2478 [2022-11-16 11:11:47,598 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 11:11:47,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:47,599 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1581 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:47,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 2838 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:11:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 11:11:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-11-16 11:11:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1235 states have (on average 1.4582995951417004) internal successors, (1801), 1235 states have internal predecessors, (1801), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1807 transitions. [2022-11-16 11:11:47,638 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1807 transitions. Word has length 430 [2022-11-16 11:11:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:47,638 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1807 transitions. [2022-11-16 11:11:47,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1807 transitions. [2022-11-16 11:11:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 11:11:47,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:47,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:47,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-11-16 11:11:47,641 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash -743063554, now seen corresponding path program 1 times [2022-11-16 11:11:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:47,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013290660] [2022-11-16 11:11:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:47,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:54,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:11:54,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:54,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013290660] [2022-11-16 11:11:54,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013290660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:54,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:54,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:11:54,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532021089] [2022-11-16 11:11:54,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:54,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:11:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:11:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:54,187 INFO L87 Difference]: Start difference. First operand 1240 states and 1807 transitions. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:54,608 INFO L93 Difference]: Finished difference Result 4955 states and 7233 transitions. [2022-11-16 11:11:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:11:54,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 430 [2022-11-16 11:11:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:54,613 INFO L225 Difference]: With dead ends: 4955 [2022-11-16 11:11:54,613 INFO L226 Difference]: Without dead ends: 3717 [2022-11-16 11:11:54,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:11:54,616 INFO L413 NwaCegarLoop]: 2255 mSDtfsCounter, 6327 mSDsluCounter, 5443 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6330 SdHoareTripleChecker+Valid, 7698 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:54,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6330 Valid, 7698 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:11:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2022-11-16 11:11:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 1662. [2022-11-16 11:11:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3585247883917775) internal successors, (2247), 1654 states have internal predecessors, (2247), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:11:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2259 transitions. [2022-11-16 11:11:54,747 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2259 transitions. Word has length 430 [2022-11-16 11:11:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:54,747 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2259 transitions. [2022-11-16 11:11:54,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:11:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2259 transitions. [2022-11-16 11:11:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1394 [2022-11-16 11:11:54,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:54,769 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-11-16 11:11:54,770 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2020229479, now seen corresponding path program 1 times [2022-11-16 11:11:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:54,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172754329] [2022-11-16 11:11:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:11:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:58,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:11:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:11:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 970 [2022-11-16 11:11:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 981 [2022-11-16 11:11:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:58,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 989 [2022-11-16 11:11:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:11:58,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:58,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172754329] [2022-11-16 11:11:58,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172754329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:58,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:58,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:11:58,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660402387] [2022-11-16 11:11:58,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:11:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:11:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:58,739 INFO L87 Difference]: Start difference. First operand 1662 states and 2259 transitions. Second operand has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:00,081 INFO L93 Difference]: Finished difference Result 4132 states and 5862 transitions. [2022-11-16 11:12:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1393 [2022-11-16 11:12:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:00,086 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:00,086 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:00,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:00,088 INFO L413 NwaCegarLoop]: 1761 mSDtfsCounter, 4904 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4907 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:00,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4907 Valid, 3197 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:12:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3579201934703748) internal successors, (2246), 1654 states have internal predecessors, (2246), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2258 transitions. [2022-11-16 11:12:00,204 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2258 transitions. Word has length 1393 [2022-11-16 11:12:00,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:00,204 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2258 transitions. [2022-11-16 11:12:00,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2258 transitions. [2022-11-16 11:12:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1395 [2022-11-16 11:12:00,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:00,225 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:00,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-11-16 11:12:00,225 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1641787469, now seen corresponding path program 1 times [2022-11-16 11:12:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:00,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365717848] [2022-11-16 11:12:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:00,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2022-11-16 11:12:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 982 [2022-11-16 11:12:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2022-11-16 11:12:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:03,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:03,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365717848] [2022-11-16 11:12:03,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365717848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:03,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:03,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900846081] [2022-11-16 11:12:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:03,887 INFO L87 Difference]: Start difference. First operand 1662 states and 2258 transitions. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:05,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:05,344 INFO L93 Difference]: Finished difference Result 4132 states and 5859 transitions. [2022-11-16 11:12:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:05,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1394 [2022-11-16 11:12:05,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:05,347 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:05,347 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:05,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:05,348 INFO L413 NwaCegarLoop]: 2830 mSDtfsCounter, 4949 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4952 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:05,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4952 Valid, 4256 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:12:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3573155985489722) internal successors, (2245), 1654 states have internal predecessors, (2245), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2257 transitions. [2022-11-16 11:12:05,428 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2257 transitions. Word has length 1394 [2022-11-16 11:12:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:05,428 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2257 transitions. [2022-11-16 11:12:05,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2257 transitions. [2022-11-16 11:12:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1396 [2022-11-16 11:12:05,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:05,450 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-11-16 11:12:05,450 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash 45863449, now seen corresponding path program 1 times [2022-11-16 11:12:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139224336] [2022-11-16 11:12:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:05,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2022-11-16 11:12:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 983 [2022-11-16 11:12:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 991 [2022-11-16 11:12:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:08,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139224336] [2022-11-16 11:12:08,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139224336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:08,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:08,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:08,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698603267] [2022-11-16 11:12:08,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:08,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:08,187 INFO L87 Difference]: Start difference. First operand 1662 states and 2257 transitions. Second operand has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:09,381 INFO L93 Difference]: Finished difference Result 4132 states and 5856 transitions. [2022-11-16 11:12:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:09,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1395 [2022-11-16 11:12:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:09,385 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:09,385 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:09,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:09,386 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 4880 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4883 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:09,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4883 Valid, 3209 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3567110036275696) internal successors, (2244), 1654 states have internal predecessors, (2244), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2256 transitions. [2022-11-16 11:12:09,520 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2256 transitions. Word has length 1395 [2022-11-16 11:12:09,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:09,521 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2256 transitions. [2022-11-16 11:12:09,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2256 transitions. [2022-11-16 11:12:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1397 [2022-11-16 11:12:09,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:09,552 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:09,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-11-16 11:12:09,552 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1353436227, now seen corresponding path program 1 times [2022-11-16 11:12:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535274472] [2022-11-16 11:12:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2022-11-16 11:12:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 984 [2022-11-16 11:12:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 992 [2022-11-16 11:12:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:12,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:12,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535274472] [2022-11-16 11:12:12,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535274472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:12,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:12,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679756394] [2022-11-16 11:12:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:12,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:12,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:12,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:12,540 INFO L87 Difference]: Start difference. First operand 1662 states and 2256 transitions. Second operand has 5 states, 5 states have (on average 273.8) internal successors, (1369), 5 states have internal predecessors, (1369), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:13,915 INFO L93 Difference]: Finished difference Result 4132 states and 5853 transitions. [2022-11-16 11:12:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 273.8) internal successors, (1369), 5 states have internal predecessors, (1369), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1396 [2022-11-16 11:12:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:13,921 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:13,921 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:13,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:13,923 INFO L413 NwaCegarLoop]: 2830 mSDtfsCounter, 4933 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4936 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:13,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4936 Valid, 4256 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:12:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.356106408706167) internal successors, (2243), 1654 states have internal predecessors, (2243), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2255 transitions. [2022-11-16 11:12:14,040 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2255 transitions. Word has length 1396 [2022-11-16 11:12:14,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:14,041 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2255 transitions. [2022-11-16 11:12:14,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.8) internal successors, (1369), 5 states have internal predecessors, (1369), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2255 transitions. [2022-11-16 11:12:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1398 [2022-11-16 11:12:14,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:14,071 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:14,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-11-16 11:12:14,072 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:14,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1103289675, now seen corresponding path program 1 times [2022-11-16 11:12:14,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:14,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430101076] [2022-11-16 11:12:14,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:14,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 974 [2022-11-16 11:12:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2022-11-16 11:12:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 993 [2022-11-16 11:12:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:16,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430101076] [2022-11-16 11:12:16,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430101076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:16,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:16,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:16,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458380990] [2022-11-16 11:12:16,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:16,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:16,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:16,702 INFO L87 Difference]: Start difference. First operand 1662 states and 2255 transitions. Second operand has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:17,792 INFO L93 Difference]: Finished difference Result 4132 states and 5850 transitions. [2022-11-16 11:12:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:17,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1397 [2022-11-16 11:12:17,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:17,795 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:17,795 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:17,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:17,796 INFO L413 NwaCegarLoop]: 1785 mSDtfsCounter, 7487 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7490 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:17,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7490 Valid, 3211 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3555018137847643) internal successors, (2242), 1654 states have internal predecessors, (2242), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2254 transitions. [2022-11-16 11:12:17,903 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2254 transitions. Word has length 1397 [2022-11-16 11:12:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:17,903 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2254 transitions. [2022-11-16 11:12:17,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2254 transitions. [2022-11-16 11:12:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1399 [2022-11-16 11:12:17,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:17,920 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:17,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-11-16 11:12:17,920 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1224301127, now seen corresponding path program 1 times [2022-11-16 11:12:17,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:17,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519065931] [2022-11-16 11:12:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2022-11-16 11:12:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 986 [2022-11-16 11:12:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 994 [2022-11-16 11:12:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:20,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519065931] [2022-11-16 11:12:20,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519065931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:20,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:20,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555268221] [2022-11-16 11:12:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:20,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:20,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:20,674 INFO L87 Difference]: Start difference. First operand 1662 states and 2254 transitions. Second operand has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:21,848 INFO L93 Difference]: Finished difference Result 4132 states and 5847 transitions. [2022-11-16 11:12:21,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1398 [2022-11-16 11:12:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:21,851 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:21,851 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:21,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:21,852 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 3578 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:21,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 4261 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:12:21,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3548972188633615) internal successors, (2241), 1654 states have internal predecessors, (2241), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2253 transitions. [2022-11-16 11:12:21,927 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2253 transitions. Word has length 1398 [2022-11-16 11:12:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:21,928 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2253 transitions. [2022-11-16 11:12:21,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2253 transitions. [2022-11-16 11:12:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2022-11-16 11:12:21,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:21,944 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:21,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-11-16 11:12:21,945 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:21,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash 911852285, now seen corresponding path program 1 times [2022-11-16 11:12:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:21,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743323378] [2022-11-16 11:12:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:21,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 976 [2022-11-16 11:12:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 987 [2022-11-16 11:12:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2022-11-16 11:12:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:24,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:24,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743323378] [2022-11-16 11:12:24,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743323378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:24,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:24,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:24,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612769202] [2022-11-16 11:12:24,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:24,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:24,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:24,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:24,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:24,400 INFO L87 Difference]: Start difference. First operand 1662 states and 2253 transitions. Second operand has 5 states, 5 states have (on average 274.4) internal successors, (1372), 5 states have internal predecessors, (1372), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:25,474 INFO L93 Difference]: Finished difference Result 4132 states and 5844 transitions. [2022-11-16 11:12:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:25,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 274.4) internal successors, (1372), 5 states have internal predecessors, (1372), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1399 [2022-11-16 11:12:25,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:25,478 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:25,478 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:25,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:25,480 INFO L413 NwaCegarLoop]: 1802 mSDtfsCounter, 7421 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7424 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:25,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7424 Valid, 3228 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3542926239419588) internal successors, (2240), 1654 states have internal predecessors, (2240), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2252 transitions. [2022-11-16 11:12:25,593 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2252 transitions. Word has length 1399 [2022-11-16 11:12:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:25,593 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2252 transitions. [2022-11-16 11:12:25,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.4) internal successors, (1372), 5 states have internal predecessors, (1372), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2252 transitions. [2022-11-16 11:12:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1401 [2022-11-16 11:12:25,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:25,610 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:25,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-11-16 11:12:25,610 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 583392431, now seen corresponding path program 1 times [2022-11-16 11:12:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:25,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112606058] [2022-11-16 11:12:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:27,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 977 [2022-11-16 11:12:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 988 [2022-11-16 11:12:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 996 [2022-11-16 11:12:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:27,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112606058] [2022-11-16 11:12:27,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112606058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:27,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:27,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137084486] [2022-11-16 11:12:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:27,959 INFO L87 Difference]: Start difference. First operand 1662 states and 2252 transitions. Second operand has 5 states, 5 states have (on average 274.6) internal successors, (1373), 5 states have internal predecessors, (1373), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:29,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:29,273 INFO L93 Difference]: Finished difference Result 4132 states and 5841 transitions. [2022-11-16 11:12:29,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:29,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 274.6) internal successors, (1373), 5 states have internal predecessors, (1373), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1400 [2022-11-16 11:12:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:29,277 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:29,277 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:29,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:29,279 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 4911 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4914 SdHoareTripleChecker+Valid, 4251 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:29,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4914 Valid, 4251 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:12:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:29,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3536880290205562) internal successors, (2239), 1654 states have internal predecessors, (2239), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2251 transitions. [2022-11-16 11:12:29,383 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2251 transitions. Word has length 1400 [2022-11-16 11:12:29,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:29,384 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2251 transitions. [2022-11-16 11:12:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.6) internal successors, (1373), 5 states have internal predecessors, (1373), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2251 transitions. [2022-11-16 11:12:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2022-11-16 11:12:29,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:29,413 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:29,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-11-16 11:12:29,413 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash -750591185, now seen corresponding path program 1 times [2022-11-16 11:12:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771701140] [2022-11-16 11:12:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 978 [2022-11-16 11:12:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 989 [2022-11-16 11:12:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2022-11-16 11:12:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:31,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:31,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771701140] [2022-11-16 11:12:31,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771701140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:31,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:31,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:31,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520887452] [2022-11-16 11:12:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:31,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:31,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:31,903 INFO L87 Difference]: Start difference. First operand 1662 states and 2251 transitions. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:33,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:33,006 INFO L93 Difference]: Finished difference Result 4132 states and 5838 transitions. [2022-11-16 11:12:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:33,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1401 [2022-11-16 11:12:33,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:33,009 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:33,009 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:33,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:33,010 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 7365 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7368 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:33,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7368 Valid, 3240 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3530834340991535) internal successors, (2238), 1654 states have internal predecessors, (2238), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2250 transitions. [2022-11-16 11:12:33,088 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2250 transitions. Word has length 1401 [2022-11-16 11:12:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:33,089 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2250 transitions. [2022-11-16 11:12:33,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2250 transitions. [2022-11-16 11:12:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1403 [2022-11-16 11:12:33,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:33,105 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-11-16 11:12:33,105 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1423642917, now seen corresponding path program 1 times [2022-11-16 11:12:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:33,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334567824] [2022-11-16 11:12:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:33,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 979 [2022-11-16 11:12:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2022-11-16 11:12:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 998 [2022-11-16 11:12:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:35,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:35,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334567824] [2022-11-16 11:12:35,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334567824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:35,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:35,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:35,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112459458] [2022-11-16 11:12:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:35,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:35,711 INFO L87 Difference]: Start difference. First operand 1662 states and 2250 transitions. Second operand has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:36,860 INFO L93 Difference]: Finished difference Result 4132 states and 5835 transitions. [2022-11-16 11:12:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:36,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1402 [2022-11-16 11:12:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:36,864 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:36,864 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:36,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:36,865 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 3570 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:36,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3573 Valid, 4261 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:12:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.352478839177751) internal successors, (2237), 1654 states have internal predecessors, (2237), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2249 transitions. [2022-11-16 11:12:36,956 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2249 transitions. Word has length 1402 [2022-11-16 11:12:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:36,957 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2249 transitions. [2022-11-16 11:12:36,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2249 transitions. [2022-11-16 11:12:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1404 [2022-11-16 11:12:36,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:36,974 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-11-16 11:12:36,974 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 589864417, now seen corresponding path program 1 times [2022-11-16 11:12:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:36,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880532053] [2022-11-16 11:12:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:39,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 980 [2022-11-16 11:12:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 991 [2022-11-16 11:12:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 999 [2022-11-16 11:12:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:39,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:39,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880532053] [2022-11-16 11:12:39,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880532053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:39,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:39,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697437800] [2022-11-16 11:12:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:39,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:39,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:39,600 INFO L87 Difference]: Start difference. First operand 1662 states and 2249 transitions. Second operand has 5 states, 5 states have (on average 275.2) internal successors, (1376), 5 states have internal predecessors, (1376), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:40,678 INFO L93 Difference]: Finished difference Result 4132 states and 5832 transitions. [2022-11-16 11:12:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:40,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 275.2) internal successors, (1376), 5 states have internal predecessors, (1376), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1403 [2022-11-16 11:12:40,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:40,682 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:40,682 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:40,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:40,683 INFO L413 NwaCegarLoop]: 1821 mSDtfsCounter, 7319 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7322 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:40,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7322 Valid, 3247 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3518742442563483) internal successors, (2236), 1654 states have internal predecessors, (2236), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2248 transitions. [2022-11-16 11:12:40,883 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2248 transitions. Word has length 1403 [2022-11-16 11:12:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:40,883 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2248 transitions. [2022-11-16 11:12:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.2) internal successors, (1376), 5 states have internal predecessors, (1376), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2248 transitions. [2022-11-16 11:12:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1405 [2022-11-16 11:12:40,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:40,900 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:40,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-11-16 11:12:40,901 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash -615521509, now seen corresponding path program 1 times [2022-11-16 11:12:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:40,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42982401] [2022-11-16 11:12:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:40,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 981 [2022-11-16 11:12:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 992 [2022-11-16 11:12:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1000 [2022-11-16 11:12:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:43,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:43,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42982401] [2022-11-16 11:12:43,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42982401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:43,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:43,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333208261] [2022-11-16 11:12:43,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:43,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:43,432 INFO L87 Difference]: Start difference. First operand 1662 states and 2248 transitions. Second operand has 5 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:44,612 INFO L93 Difference]: Finished difference Result 4132 states and 5829 transitions. [2022-11-16 11:12:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:44,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1404 [2022-11-16 11:12:44,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:44,615 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:44,615 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:44,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:44,616 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 4879 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4882 SdHoareTripleChecker+Valid, 4251 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:44,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4882 Valid, 4251 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:12:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3512696493349456) internal successors, (2235), 1654 states have internal predecessors, (2235), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2247 transitions. [2022-11-16 11:12:44,706 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2247 transitions. Word has length 1404 [2022-11-16 11:12:44,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:44,707 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2247 transitions. [2022-11-16 11:12:44,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2247 transitions. [2022-11-16 11:12:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1406 [2022-11-16 11:12:44,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:44,724 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:44,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-11-16 11:12:44,724 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash -291679469, now seen corresponding path program 1 times [2022-11-16 11:12:44,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:44,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538020592] [2022-11-16 11:12:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:44,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 982 [2022-11-16 11:12:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 993 [2022-11-16 11:12:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2022-11-16 11:12:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:47,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538020592] [2022-11-16 11:12:47,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538020592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:47,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:47,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:47,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375588885] [2022-11-16 11:12:47,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:47,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:47,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:47,369 INFO L87 Difference]: Start difference. First operand 1662 states and 2247 transitions. Second operand has 5 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:48,432 INFO L93 Difference]: Finished difference Result 4132 states and 5826 transitions. [2022-11-16 11:12:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1405 [2022-11-16 11:12:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:48,435 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:48,435 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:48,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:48,436 INFO L413 NwaCegarLoop]: 1833 mSDtfsCounter, 7263 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7266 SdHoareTripleChecker+Valid, 3259 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:48,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7266 Valid, 3259 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.350665054413543) internal successors, (2234), 1654 states have internal predecessors, (2234), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2246 transitions. [2022-11-16 11:12:48,550 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2246 transitions. Word has length 1405 [2022-11-16 11:12:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:48,550 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2246 transitions. [2022-11-16 11:12:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2246 transitions. [2022-11-16 11:12:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1407 [2022-11-16 11:12:48,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:48,571 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-11-16 11:12:48,571 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:48,572 INFO L85 PathProgramCache]: Analyzing trace with hash 726004369, now seen corresponding path program 1 times [2022-11-16 11:12:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:48,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321917734] [2022-11-16 11:12:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 983 [2022-11-16 11:12:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 994 [2022-11-16 11:12:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1002 [2022-11-16 11:12:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:51,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:51,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321917734] [2022-11-16 11:12:51,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321917734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:51,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:51,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:51,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124579353] [2022-11-16 11:12:51,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:51,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:51,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:51,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:51,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:51,145 INFO L87 Difference]: Start difference. First operand 1662 states and 2246 transitions. Second operand has 5 states, 5 states have (on average 275.8) internal successors, (1379), 5 states have internal predecessors, (1379), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:52,271 INFO L93 Difference]: Finished difference Result 4132 states and 5823 transitions. [2022-11-16 11:12:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 275.8) internal successors, (1379), 5 states have internal predecessors, (1379), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1406 [2022-11-16 11:12:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:52,275 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:52,275 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:52,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:52,276 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 3562 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3565 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:52,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3565 Valid, 4261 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3500604594921404) internal successors, (2233), 1654 states have internal predecessors, (2233), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2245 transitions. [2022-11-16 11:12:52,349 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2245 transitions. Word has length 1406 [2022-11-16 11:12:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:52,349 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2245 transitions. [2022-11-16 11:12:52,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.8) internal successors, (1379), 5 states have internal predecessors, (1379), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2245 transitions. [2022-11-16 11:12:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1408 [2022-11-16 11:12:52,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:52,366 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:52,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-11-16 11:12:52,366 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash -501521723, now seen corresponding path program 1 times [2022-11-16 11:12:52,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:52,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208031153] [2022-11-16 11:12:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:52,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 984 [2022-11-16 11:12:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2022-11-16 11:12:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2022-11-16 11:12:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208031153] [2022-11-16 11:12:55,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208031153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:55,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:55,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:55,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831502562] [2022-11-16 11:12:55,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:55,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:55,045 INFO L87 Difference]: Start difference. First operand 1662 states and 2245 transitions. Second operand has 5 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:56,137 INFO L93 Difference]: Finished difference Result 4132 states and 5820 transitions. [2022-11-16 11:12:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1407 [2022-11-16 11:12:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:56,139 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:56,139 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:56,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:56,140 INFO L413 NwaCegarLoop]: 1850 mSDtfsCounter, 7197 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7200 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:56,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7200 Valid, 3276 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:12:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3494558645707375) internal successors, (2232), 1654 states have internal predecessors, (2232), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2244 transitions. [2022-11-16 11:12:56,216 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2244 transitions. Word has length 1407 [2022-11-16 11:12:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:56,217 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2244 transitions. [2022-11-16 11:12:56,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2244 transitions. [2022-11-16 11:12:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1409 [2022-11-16 11:12:56,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:56,234 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:56,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-11-16 11:12:56,234 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash 989257607, now seen corresponding path program 1 times [2022-11-16 11:12:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995340707] [2022-11-16 11:12:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:56,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:12:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:12:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:12:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2022-11-16 11:12:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 996 [2022-11-16 11:12:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2022-11-16 11:12:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:12:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:58,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995340707] [2022-11-16 11:12:58,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995340707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:58,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:58,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960793150] [2022-11-16 11:12:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:58,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:12:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:12:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:12:58,666 INFO L87 Difference]: Start difference. First operand 1662 states and 2244 transitions. Second operand has 5 states, 5 states have (on average 276.2) internal successors, (1381), 5 states have internal predecessors, (1381), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:59,843 INFO L93 Difference]: Finished difference Result 4132 states and 5817 transitions. [2022-11-16 11:12:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:59,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 276.2) internal successors, (1381), 5 states have internal predecessors, (1381), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1408 [2022-11-16 11:12:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:59,847 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:12:59,847 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:12:59,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:59,848 INFO L413 NwaCegarLoop]: 2830 mSDtfsCounter, 4837 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4840 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:59,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4840 Valid, 4256 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:12:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:12:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:12:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3488512696493349) internal successors, (2231), 1654 states have internal predecessors, (2231), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:12:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2243 transitions. [2022-11-16 11:12:59,967 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2243 transitions. Word has length 1408 [2022-11-16 11:12:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:59,967 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2243 transitions. [2022-11-16 11:12:59,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.2) internal successors, (1381), 5 states have internal predecessors, (1381), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:12:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2243 transitions. [2022-11-16 11:12:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1410 [2022-11-16 11:12:59,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:59,989 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:59,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-11-16 11:12:59,989 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash 872754423, now seen corresponding path program 1 times [2022-11-16 11:12:59,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:59,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340115152] [2022-11-16 11:12:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:59,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 986 [2022-11-16 11:13:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2022-11-16 11:13:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1005 [2022-11-16 11:13:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:02,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:02,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340115152] [2022-11-16 11:13:02,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340115152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:02,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:02,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438115609] [2022-11-16 11:13:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:02,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:02,396 INFO L87 Difference]: Start difference. First operand 1662 states and 2243 transitions. Second operand has 5 states, 5 states have (on average 276.4) internal successors, (1382), 5 states have internal predecessors, (1382), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:03,544 INFO L93 Difference]: Finished difference Result 4132 states and 5814 transitions. [2022-11-16 11:13:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:03,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 276.4) internal successors, (1382), 5 states have internal predecessors, (1382), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1409 [2022-11-16 11:13:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:03,547 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:03,547 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:03,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:03,549 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 4712 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 3293 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:03,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4715 Valid, 3293 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3482466747279322) internal successors, (2230), 1654 states have internal predecessors, (2230), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2242 transitions. [2022-11-16 11:13:03,684 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2242 transitions. Word has length 1409 [2022-11-16 11:13:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:03,685 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2242 transitions. [2022-11-16 11:13:03,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.4) internal successors, (1382), 5 states have internal predecessors, (1382), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2242 transitions. [2022-11-16 11:13:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2022-11-16 11:13:03,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:03,717 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:03,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-11-16 11:13:03,717 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1682683395, now seen corresponding path program 1 times [2022-11-16 11:13:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:03,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774059871] [2022-11-16 11:13:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:03,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 987 [2022-11-16 11:13:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 998 [2022-11-16 11:13:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2022-11-16 11:13:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:06,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:06,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774059871] [2022-11-16 11:13:06,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774059871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:06,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:06,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624579284] [2022-11-16 11:13:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:06,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:06,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:06,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:06,432 INFO L87 Difference]: Start difference. First operand 1662 states and 2242 transitions. Second operand has 5 states, 5 states have (on average 276.6) internal successors, (1383), 5 states have internal predecessors, (1383), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:07,545 INFO L93 Difference]: Finished difference Result 4132 states and 5811 transitions. [2022-11-16 11:13:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:07,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 276.6) internal successors, (1383), 5 states have internal predecessors, (1383), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1410 [2022-11-16 11:13:07,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:07,548 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:07,548 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:07,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:07,550 INFO L413 NwaCegarLoop]: 2830 mSDtfsCounter, 3549 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3552 SdHoareTripleChecker+Valid, 4266 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:07,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3552 Valid, 4266 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:13:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3476420798065296) internal successors, (2229), 1654 states have internal predecessors, (2229), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2241 transitions. [2022-11-16 11:13:07,625 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2241 transitions. Word has length 1410 [2022-11-16 11:13:07,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:07,625 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2241 transitions. [2022-11-16 11:13:07,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.6) internal successors, (1383), 5 states have internal predecessors, (1383), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2241 transitions. [2022-11-16 11:13:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1412 [2022-11-16 11:13:07,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:07,642 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:07,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-11-16 11:13:07,643 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:07,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:07,643 INFO L85 PathProgramCache]: Analyzing trace with hash -895151703, now seen corresponding path program 1 times [2022-11-16 11:13:07,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:07,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473269736] [2022-11-16 11:13:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 988 [2022-11-16 11:13:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 999 [2022-11-16 11:13:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1007 [2022-11-16 11:13:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:10,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473269736] [2022-11-16 11:13:10,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473269736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:10,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:10,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474248689] [2022-11-16 11:13:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:10,741 INFO L87 Difference]: Start difference. First operand 1662 states and 2241 transitions. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:11,770 INFO L93 Difference]: Finished difference Result 4132 states and 5808 transitions. [2022-11-16 11:13:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:11,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1411 [2022-11-16 11:13:11,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:11,773 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:11,773 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:11,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:11,774 INFO L413 NwaCegarLoop]: 1874 mSDtfsCounter, 7085 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7088 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:11,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7088 Valid, 3300 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.347037484885127) internal successors, (2228), 1654 states have internal predecessors, (2228), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2240 transitions. [2022-11-16 11:13:11,967 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2240 transitions. Word has length 1411 [2022-11-16 11:13:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:11,967 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2240 transitions. [2022-11-16 11:13:11,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2240 transitions. [2022-11-16 11:13:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2022-11-16 11:13:11,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:11,984 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:11,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-11-16 11:13:11,984 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 333959667, now seen corresponding path program 1 times [2022-11-16 11:13:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:11,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579419042] [2022-11-16 11:13:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 989 [2022-11-16 11:13:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1000 [2022-11-16 11:13:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1008 [2022-11-16 11:13:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:14,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:14,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579419042] [2022-11-16 11:13:14,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579419042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:14,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:14,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594886241] [2022-11-16 11:13:14,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:14,529 INFO L87 Difference]: Start difference. First operand 1662 states and 2240 transitions. Second operand has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:15,652 INFO L93 Difference]: Finished difference Result 4132 states and 5805 transitions. [2022-11-16 11:13:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1412 [2022-11-16 11:13:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:15,655 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:15,656 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:15,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:15,657 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 3550 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:15,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3553 Valid, 4261 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:13:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3464328899637243) internal successors, (2227), 1654 states have internal predecessors, (2227), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2239 transitions. [2022-11-16 11:13:15,764 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2239 transitions. Word has length 1412 [2022-11-16 11:13:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:15,764 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2239 transitions. [2022-11-16 11:13:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:15,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2239 transitions. [2022-11-16 11:13:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2022-11-16 11:13:15,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:15,782 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:15,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-11-16 11:13:15,782 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:15,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash -500338469, now seen corresponding path program 1 times [2022-11-16 11:13:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:15,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160741372] [2022-11-16 11:13:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:15,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2022-11-16 11:13:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2022-11-16 11:13:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1009 [2022-11-16 11:13:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:18,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:18,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160741372] [2022-11-16 11:13:18,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160741372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:18,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:18,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335242910] [2022-11-16 11:13:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:18,292 INFO L87 Difference]: Start difference. First operand 1662 states and 2239 transitions. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:19,340 INFO L93 Difference]: Finished difference Result 4132 states and 5802 transitions. [2022-11-16 11:13:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:19,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1413 [2022-11-16 11:13:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:19,344 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:19,344 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:19,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:19,345 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 4664 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:19,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3317 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:19,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3458282950423217) internal successors, (2226), 1654 states have internal predecessors, (2226), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2238 transitions. [2022-11-16 11:13:19,443 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2238 transitions. Word has length 1413 [2022-11-16 11:13:19,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:19,443 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2238 transitions. [2022-11-16 11:13:19,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:19,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2238 transitions. [2022-11-16 11:13:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2022-11-16 11:13:19,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:19,460 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:19,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-11-16 11:13:19,460 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1189931159, now seen corresponding path program 1 times [2022-11-16 11:13:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:19,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893241042] [2022-11-16 11:13:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:22,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:22,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 991 [2022-11-16 11:13:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1002 [2022-11-16 11:13:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1010 [2022-11-16 11:13:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:22,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:22,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893241042] [2022-11-16 11:13:22,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893241042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:22,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:22,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639645203] [2022-11-16 11:13:22,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:22,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:22,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:22,175 INFO L87 Difference]: Start difference. First operand 1662 states and 2238 transitions. Second operand has 5 states, 5 states have (on average 277.4) internal successors, (1387), 5 states have internal predecessors, (1387), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:23,260 INFO L93 Difference]: Finished difference Result 4132 states and 5799 transitions. [2022-11-16 11:13:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 277.4) internal successors, (1387), 5 states have internal predecessors, (1387), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1414 [2022-11-16 11:13:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:23,264 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:23,264 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:23,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:23,265 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 3546 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:23,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 4261 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:23,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:23,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.345223700120919) internal successors, (2225), 1654 states have internal predecessors, (2225), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2237 transitions. [2022-11-16 11:13:23,363 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2237 transitions. Word has length 1414 [2022-11-16 11:13:23,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:23,364 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2237 transitions. [2022-11-16 11:13:23,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.4) internal successors, (1387), 5 states have internal predecessors, (1387), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:23,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2237 transitions. [2022-11-16 11:13:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1416 [2022-11-16 11:13:23,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:23,380 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-11-16 11:13:23,380 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:23,380 INFO L85 PathProgramCache]: Analyzing trace with hash 850963085, now seen corresponding path program 1 times [2022-11-16 11:13:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:23,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362134253] [2022-11-16 11:13:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 992 [2022-11-16 11:13:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2022-11-16 11:13:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1011 [2022-11-16 11:13:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:25,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362134253] [2022-11-16 11:13:25,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362134253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:25,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:25,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096667595] [2022-11-16 11:13:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:25,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:25,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:25,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:25,965 INFO L87 Difference]: Start difference. First operand 1662 states and 2237 transitions. Second operand has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:27,058 INFO L93 Difference]: Finished difference Result 4132 states and 5796 transitions. [2022-11-16 11:13:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:27,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1415 [2022-11-16 11:13:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:27,062 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:27,062 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:27,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:27,063 INFO L413 NwaCegarLoop]: 1893 mSDtfsCounter, 6983 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6986 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:27,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6986 Valid, 3319 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3446191051995162) internal successors, (2224), 1654 states have internal predecessors, (2224), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2236 transitions. [2022-11-16 11:13:27,166 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2236 transitions. Word has length 1415 [2022-11-16 11:13:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:27,167 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2236 transitions. [2022-11-16 11:13:27,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2236 transitions. [2022-11-16 11:13:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1417 [2022-11-16 11:13:27,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:27,183 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:27,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-11-16 11:13:27,183 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1982875041, now seen corresponding path program 1 times [2022-11-16 11:13:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:27,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679443159] [2022-11-16 11:13:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:27,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:29,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 993 [2022-11-16 11:13:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2022-11-16 11:13:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1012 [2022-11-16 11:13:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:29,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:29,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679443159] [2022-11-16 11:13:29,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679443159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:29,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:29,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:29,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012728410] [2022-11-16 11:13:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:29,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:29,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:29,931 INFO L87 Difference]: Start difference. First operand 1662 states and 2236 transitions. Second operand has 5 states, 5 states have (on average 277.8) internal successors, (1389), 5 states have internal predecessors, (1389), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:31,041 INFO L93 Difference]: Finished difference Result 4132 states and 5793 transitions. [2022-11-16 11:13:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:31,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 277.8) internal successors, (1389), 5 states have internal predecessors, (1389), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1416 [2022-11-16 11:13:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:31,046 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:31,046 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:31,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:31,049 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 3542 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:31,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 4261 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3440145102781136) internal successors, (2223), 1654 states have internal predecessors, (2223), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2235 transitions. [2022-11-16 11:13:31,134 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2235 transitions. Word has length 1416 [2022-11-16 11:13:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:31,134 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2235 transitions. [2022-11-16 11:13:31,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.8) internal successors, (1389), 5 states have internal predecessors, (1389), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2235 transitions. [2022-11-16 11:13:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1418 [2022-11-16 11:13:31,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:31,152 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-11-16 11:13:31,152 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:31,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1773592897, now seen corresponding path program 1 times [2022-11-16 11:13:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:31,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042299043] [2022-11-16 11:13:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 994 [2022-11-16 11:13:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1005 [2022-11-16 11:13:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2022-11-16 11:13:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:34,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:34,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042299043] [2022-11-16 11:13:34,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042299043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:34,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:34,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:34,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723429982] [2022-11-16 11:13:34,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:34,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:34,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:34,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:34,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:34,394 INFO L87 Difference]: Start difference. First operand 1662 states and 2235 transitions. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:35,431 INFO L93 Difference]: Finished difference Result 4132 states and 5790 transitions. [2022-11-16 11:13:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:35,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1417 [2022-11-16 11:13:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:35,434 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:35,434 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:35,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:35,436 INFO L413 NwaCegarLoop]: 1905 mSDtfsCounter, 4616 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:35,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 3341 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.343409915356711) internal successors, (2222), 1654 states have internal predecessors, (2222), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:35,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2234 transitions. [2022-11-16 11:13:35,543 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2234 transitions. Word has length 1417 [2022-11-16 11:13:35,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:35,544 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2234 transitions. [2022-11-16 11:13:35,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:35,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2234 transitions. [2022-11-16 11:13:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1419 [2022-11-16 11:13:35,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:35,560 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:35,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-11-16 11:13:35,561 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2016453931, now seen corresponding path program 1 times [2022-11-16 11:13:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:35,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106768303] [2022-11-16 11:13:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:13:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:13:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:13:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2022-11-16 11:13:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2022-11-16 11:13:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1014 [2022-11-16 11:13:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:13:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:38,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106768303] [2022-11-16 11:13:38,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106768303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:38,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:38,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804157797] [2022-11-16 11:13:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:38,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:38,547 INFO L87 Difference]: Start difference. First operand 1662 states and 2234 transitions. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:39,665 INFO L93 Difference]: Finished difference Result 4132 states and 5787 transitions. [2022-11-16 11:13:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1418 [2022-11-16 11:13:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:39,669 INFO L225 Difference]: With dead ends: 4132 [2022-11-16 11:13:39,669 INFO L226 Difference]: Without dead ends: 2894 [2022-11-16 11:13:39,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:39,670 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 3538 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:39,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 4261 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-11-16 11:13:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2022-11-16 11:13:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1654 states have (on average 1.3428053204353083) internal successors, (2221), 1654 states have internal predecessors, (2221), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:13:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2233 transitions. [2022-11-16 11:13:39,786 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2233 transitions. Word has length 1418 [2022-11-16 11:13:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:39,787 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2233 transitions. [2022-11-16 11:13:39,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:13:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2233 transitions. [2022-11-16 11:13:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2022-11-16 11:13:39,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:39,806 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:39,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-11-16 11:13:39,806 INFO L420 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash 784936305, now seen corresponding path program 1 times [2022-11-16 11:13:39,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:39,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182546682] [2022-11-16 11:13:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:39,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat