./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/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_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/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 32bit --witnessprinter.graph.data.programhash b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 --- 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 12:14:42,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:14:42,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:14:42,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:14:42,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:14:42,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:14:42,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:14:42,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:14:42,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:14:42,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:14:42,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:14:42,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:14:42,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:14:42,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:14:42,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:14:42,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:14:42,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:14:42,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:14:42,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:14:42,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:14:42,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:14:42,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:14:42,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:14:42,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:14:42,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:14:42,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:14:42,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:14:42,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:14:42,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:14:42,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:14:42,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:14:42,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:14:42,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:14:42,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:14:42,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:14:42,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:14:42,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:14:42,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:14:42,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:14:42,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:14:42,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:14:42,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:14:42,399 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:14:42,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:14:42,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:14:42,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:14:42,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:14:42,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:14:42,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:14:42,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:14:42,403 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:14:42,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:14:42,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:14:42,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:14:42,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:14:42,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:14:42,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:14:42,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:14:42,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:14:42,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:14:42,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:14:42,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:14:42,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:14:42,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:14:42,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:14:42,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:14:42,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:42,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:14:42,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:14:42,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:14:42,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:14:42,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:14:42,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:14:42,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:14:42,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:14:42,412 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_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 [2022-11-16 12:14:42,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:14:42,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:14:42,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:14:42,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:14:42,949 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:14:42,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-11-16 12:14:43,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/data/2a86a91d5/e6b4fb1716ed4361856737e851b7259d/FLAG34460b1d4 [2022-11-16 12:14:43,776 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:14:43,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-11-16 12:14:43,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/data/2a86a91d5/e6b4fb1716ed4361856737e851b7259d/FLAG34460b1d4 [2022-11-16 12:14:43,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/data/2a86a91d5/e6b4fb1716ed4361856737e851b7259d [2022-11-16 12:14:43,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:14:43,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:14:44,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:44,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:14:44,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:14:44,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:43" (1/1) ... [2022-11-16 12:14:44,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9e072b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44, skipping insertion in model container [2022-11-16 12:14:44,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:43" (1/1) ... [2022-11-16 12:14:44,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:14:44,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:14:44,424 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_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2022-11-16 12:14:44,553 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_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-11-16 12:14:44,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:44,710 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:14:44,725 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_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2022-11-16 12:14:44,757 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_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-11-16 12:14:44,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:44,840 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:14:44,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44 WrapperNode [2022-11-16 12:14:44,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:44,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:44,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:14:44,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:14:44,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:44,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:44,952 INFO L138 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 788 [2022-11-16 12:14:44,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:44,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:14:44,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:14:44,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:14:44,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:44,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:44,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:44,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:45,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:45,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:45,047 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:45,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:45,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:14:45,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:14:45,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:14:45,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:14:45,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (1/1) ... [2022-11-16 12:14:45,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:45,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:45,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:14:45,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad60438f-6c66-4c9f-9f6f-e5871d2571f8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:14:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:14:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 12:14:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 12:14:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-16 12:14:45,195 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-16 12:14:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-16 12:14:45,195 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-16 12:14:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-16 12:14:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-16 12:14:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-16 12:14:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-16 12:14:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-16 12:14:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-16 12:14:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-16 12:14:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-16 12:14:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-16 12:14:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-16 12:14:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-16 12:14:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-16 12:14:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-16 12:14:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-16 12:14:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-16 12:14:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-16 12:14:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:14:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-16 12:14:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-16 12:14:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-16 12:14:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-16 12:14:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:14:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:14:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-16 12:14:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-16 12:14:45,357 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:14:45,369 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:14:46,509 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-16 12:14:46,510 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-16 12:14:46,648 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:14:46,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:14:46,673 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-16 12:14:46,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:46 BoogieIcfgContainer [2022-11-16 12:14:46,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:14:46,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:14:46,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:14:46,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:14:46,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:14:43" (1/3) ... [2022-11-16 12:14:46,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2313f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:46, skipping insertion in model container [2022-11-16 12:14:46,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:44" (2/3) ... [2022-11-16 12:14:46,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2313f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:46, skipping insertion in model container [2022-11-16 12:14:46,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:46" (3/3) ... [2022-11-16 12:14:46,692 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-11-16 12:14:46,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:14:46,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:14:46,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:14:46,862 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;@3224d7a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:14:46,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:14:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-16 12:14:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:14:46,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:46,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:46,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash -334337363, now seen corresponding path program 1 times [2022-11-16 12:14:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:46,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394502083] [2022-11-16 12:14:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:14:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:14:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:14:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:14:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:14:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:14:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:14:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:47,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:47,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394502083] [2022-11-16 12:14:47,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394502083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:47,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:47,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:14:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304479700] [2022-11-16 12:14:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:47,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:47,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:47,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:47,674 INFO L87 Difference]: Start difference. First operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:14:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:49,188 INFO L93 Difference]: Finished difference Result 743 states and 1170 transitions. [2022-11-16 12:14:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:14:49,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-16 12:14:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:49,221 INFO L225 Difference]: With dead ends: 743 [2022-11-16 12:14:49,222 INFO L226 Difference]: Without dead ends: 382 [2022-11-16 12:14:49,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:14:49,240 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 590 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:49,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1280 Invalid, 709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:14:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-16 12:14:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-11-16 12:14:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 312 states have (on average 1.5224358974358974) internal successors, (475), 316 states have internal predecessors, (475), 37 states have call successors, (37), 14 states have call predecessors, (37), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-16 12:14:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 547 transitions. [2022-11-16 12:14:49,357 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 547 transitions. Word has length 65 [2022-11-16 12:14:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:49,358 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 547 transitions. [2022-11-16 12:14:49,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:14:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 547 transitions. [2022-11-16 12:14:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:14:49,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:49,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:49,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:14:49,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1721122773, now seen corresponding path program 1 times [2022-11-16 12:14:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:49,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409277492] [2022-11-16 12:14:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:49,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:14:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:14:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:14:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:14:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:14:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:14:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:14:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:49,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:49,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409277492] [2022-11-16 12:14:49,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409277492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:49,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:49,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:14:49,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060585676] [2022-11-16 12:14:49,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:49,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:14:49,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:49,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:14:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:14:49,681 INFO L87 Difference]: Start difference. First operand 364 states and 547 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:14:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:51,428 INFO L93 Difference]: Finished difference Result 619 states and 916 transitions. [2022-11-16 12:14:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:14:51,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-16 12:14:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:51,438 INFO L225 Difference]: With dead ends: 619 [2022-11-16 12:14:51,438 INFO L226 Difference]: Without dead ends: 515 [2022-11-16 12:14:51,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:14:51,444 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 987 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:51,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1584 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 12:14:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-16 12:14:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 476. [2022-11-16 12:14:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 402 states have (on average 1.4950248756218905) internal successors, (601), 408 states have internal predecessors, (601), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-11-16 12:14:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 704 transitions. [2022-11-16 12:14:51,551 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 704 transitions. Word has length 65 [2022-11-16 12:14:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:51,552 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 704 transitions. [2022-11-16 12:14:51,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:14:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 704 transitions. [2022-11-16 12:14:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:14:51,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:51,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:51,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:14:51,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:51,572 INFO L85 PathProgramCache]: Analyzing trace with hash -42234133, now seen corresponding path program 1 times [2022-11-16 12:14:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:51,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351591955] [2022-11-16 12:14:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:51,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:14:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:14:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:14:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:14:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:14:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:14:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:14:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351591955] [2022-11-16 12:14:51,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351591955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:51,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:51,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:14:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107825472] [2022-11-16 12:14:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:51,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:14:51,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:51,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:14:51,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:14:51,997 INFO L87 Difference]: Start difference. First operand 476 states and 704 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:14:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:53,984 INFO L93 Difference]: Finished difference Result 873 states and 1269 transitions. [2022-11-16 12:14:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:14:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-16 12:14:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:53,990 INFO L225 Difference]: With dead ends: 873 [2022-11-16 12:14:53,991 INFO L226 Difference]: Without dead ends: 664 [2022-11-16 12:14:53,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:14:53,993 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1070 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:53,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1965 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:14:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-11-16 12:14:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 588. [2022-11-16 12:14:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 492 states have (on average 1.475609756097561) internal successors, (726), 500 states have internal predecessors, (726), 63 states have call successors, (63), 28 states have call predecessors, (63), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-11-16 12:14:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 863 transitions. [2022-11-16 12:14:54,074 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 863 transitions. Word has length 65 [2022-11-16 12:14:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:54,075 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 863 transitions. [2022-11-16 12:14:54,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:14:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 863 transitions. [2022-11-16 12:14:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:14:54,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:54,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:54,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:14:54,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2070820243, now seen corresponding path program 1 times [2022-11-16 12:14:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:54,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056471544] [2022-11-16 12:14:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:54,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:14:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:14:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:14:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:14:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:14:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:14:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:14:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:54,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:54,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056471544] [2022-11-16 12:14:54,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056471544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:54,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:54,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:14:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691027494] [2022-11-16 12:14:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:54,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:14:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:14:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:14:54,379 INFO L87 Difference]: Start difference. First operand 588 states and 863 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-16 12:14:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:57,563 INFO L93 Difference]: Finished difference Result 2134 states and 3060 transitions. [2022-11-16 12:14:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:14:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-11-16 12:14:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:57,574 INFO L225 Difference]: With dead ends: 2134 [2022-11-16 12:14:57,574 INFO L226 Difference]: Without dead ends: 1801 [2022-11-16 12:14:57,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:14:57,589 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 3003 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:57,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3021 Valid, 2296 Invalid, 2638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [579 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:14:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-11-16 12:14:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1641. [2022-11-16 12:14:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1340 states have (on average 1.3970149253731343) internal successors, (1872), 1363 states have internal predecessors, (1872), 173 states have call successors, (173), 111 states have call predecessors, (173), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-11-16 12:14:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2252 transitions. [2022-11-16 12:14:57,808 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2252 transitions. Word has length 65 [2022-11-16 12:14:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:57,809 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2252 transitions. [2022-11-16 12:14:57,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-16 12:14:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2252 transitions. [2022-11-16 12:14:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:14:57,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:57,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:57,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:14:57,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:57,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:57,814 INFO L85 PathProgramCache]: Analyzing trace with hash 160145276, now seen corresponding path program 1 times [2022-11-16 12:14:57,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:57,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525872290] [2022-11-16 12:14:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:57,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:14:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:14:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:14:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:14:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:14:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 12:14:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:14:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:58,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:58,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525872290] [2022-11-16 12:14:58,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525872290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:58,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:58,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:14:58,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792481707] [2022-11-16 12:14:58,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:58,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:14:58,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:14:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:14:58,049 INFO L87 Difference]: Start difference. First operand 1641 states and 2252 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:14:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:59,779 INFO L93 Difference]: Finished difference Result 3257 states and 4472 transitions. [2022-11-16 12:14:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:14:59,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-16 12:14:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:59,792 INFO L225 Difference]: With dead ends: 3257 [2022-11-16 12:14:59,792 INFO L226 Difference]: Without dead ends: 1877 [2022-11-16 12:14:59,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:14:59,800 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 690 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:59,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1929 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 12:14:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-11-16 12:14:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1711. [2022-11-16 12:14:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1396 states have (on average 1.3810888252148996) internal successors, (1928), 1419 states have internal predecessors, (1928), 173 states have call successors, (173), 111 states have call predecessors, (173), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-11-16 12:14:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2322 transitions. [2022-11-16 12:14:59,962 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2322 transitions. Word has length 66 [2022-11-16 12:14:59,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:59,964 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2322 transitions. [2022-11-16 12:14:59,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:14:59,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2322 transitions. [2022-11-16 12:14:59,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:14:59,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:59,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:59,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:14:59,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:59,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1226058118, now seen corresponding path program 1 times [2022-11-16 12:14:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:59,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201127671] [2022-11-16 12:14:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:15:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:15:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:15:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 12:15:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:15:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:00,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:00,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201127671] [2022-11-16 12:15:00,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201127671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:00,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:00,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:15:00,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279851833] [2022-11-16 12:15:00,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:00,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:15:00,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:00,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:15:00,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:15:00,278 INFO L87 Difference]: Start difference. First operand 1711 states and 2322 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:15:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:02,113 INFO L93 Difference]: Finished difference Result 3325 states and 4495 transitions. [2022-11-16 12:15:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:15:02,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-16 12:15:02,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:02,126 INFO L225 Difference]: With dead ends: 3325 [2022-11-16 12:15:02,126 INFO L226 Difference]: Without dead ends: 1875 [2022-11-16 12:15:02,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:15:02,133 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 473 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:02,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 2172 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 12:15:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2022-11-16 12:15:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1751. [2022-11-16 12:15:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1428 states have (on average 1.3683473389355743) internal successors, (1954), 1451 states have internal predecessors, (1954), 173 states have call successors, (173), 111 states have call predecessors, (173), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-11-16 12:15:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2356 transitions. [2022-11-16 12:15:02,338 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2356 transitions. Word has length 66 [2022-11-16 12:15:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:02,338 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2356 transitions. [2022-11-16 12:15:02,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:15:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2356 transitions. [2022-11-16 12:15:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:15:02,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:02,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:02,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:15:02,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2039549880, now seen corresponding path program 1 times [2022-11-16 12:15:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:02,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548847347] [2022-11-16 12:15:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:02,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:15:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:15:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:15:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 12:15:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:15:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:02,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548847347] [2022-11-16 12:15:02,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548847347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:02,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:02,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:15:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595169006] [2022-11-16 12:15:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:02,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:15:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:02,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:15:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:15:02,555 INFO L87 Difference]: Start difference. First operand 1751 states and 2356 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:15:05,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:05,291 INFO L93 Difference]: Finished difference Result 5485 states and 7458 transitions. [2022-11-16 12:15:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:15:05,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-11-16 12:15:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:05,307 INFO L225 Difference]: With dead ends: 5485 [2022-11-16 12:15:05,307 INFO L226 Difference]: Without dead ends: 2148 [2022-11-16 12:15:05,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:15:05,317 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 3089 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:05,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 2345 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:15:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-11-16 12:15:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1952. [2022-11-16 12:15:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1559 states have (on average 1.3290570878768442) internal successors, (2072), 1584 states have internal predecessors, (2072), 213 states have call successors, (213), 139 states have call predecessors, (213), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-11-16 12:15:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2558 transitions. [2022-11-16 12:15:05,578 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2558 transitions. Word has length 66 [2022-11-16 12:15:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:05,578 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2558 transitions. [2022-11-16 12:15:05,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:15:05,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2558 transitions. [2022-11-16 12:15:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 12:15:05,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:05,587 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:15:05,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:15:05,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1663597100, now seen corresponding path program 1 times [2022-11-16 12:15:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:05,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841666063] [2022-11-16 12:15:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:05,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:15:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:15:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:15:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:15:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:15:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:15:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 12:15:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:05,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841666063] [2022-11-16 12:15:05,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841666063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:05,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:05,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:15:05,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732645463] [2022-11-16 12:15:05,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:05,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:15:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:05,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:15:05,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:15:05,863 INFO L87 Difference]: Start difference. First operand 1952 states and 2558 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:15:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:07,567 INFO L93 Difference]: Finished difference Result 3489 states and 4546 transitions. [2022-11-16 12:15:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:15:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-16 12:15:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:07,580 INFO L225 Difference]: With dead ends: 3489 [2022-11-16 12:15:07,580 INFO L226 Difference]: Without dead ends: 2036 [2022-11-16 12:15:07,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:15:07,585 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1084 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:07,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1664 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 12:15:07,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-11-16 12:15:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1731. [2022-11-16 12:15:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3306973400431343) internal successors, (1851), 1411 states have internal predecessors, (1851), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-16 12:15:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2269 transitions. [2022-11-16 12:15:07,799 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2269 transitions. Word has length 91 [2022-11-16 12:15:07,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:07,800 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2269 transitions. [2022-11-16 12:15:07,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:15:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2269 transitions. [2022-11-16 12:15:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 12:15:07,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:07,802 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:15:07,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:15:07,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:07,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash -692208150, now seen corresponding path program 1 times [2022-11-16 12:15:07,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:07,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581565999] [2022-11-16 12:15:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:15:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:15:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:15:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:15:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:15:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:15:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:15:07,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:07,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581565999] [2022-11-16 12:15:07,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581565999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:07,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:07,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835780334] [2022-11-16 12:15:07,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:07,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:07,927 INFO L87 Difference]: Start difference. First operand 1731 states and 2269 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 12:15:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:08,812 INFO L93 Difference]: Finished difference Result 3307 states and 4329 transitions. [2022-11-16 12:15:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:15:08,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-11-16 12:15:08,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:08,830 INFO L225 Difference]: With dead ends: 3307 [2022-11-16 12:15:08,831 INFO L226 Difference]: Without dead ends: 1838 [2022-11-16 12:15:08,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:15:08,836 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1148 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 988 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:15:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2022-11-16 12:15:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1731. [2022-11-16 12:15:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3048166786484543) internal successors, (1815), 1411 states have internal predecessors, (1815), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-16 12:15:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2233 transitions. [2022-11-16 12:15:09,051 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2233 transitions. Word has length 91 [2022-11-16 12:15:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:09,052 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2233 transitions. [2022-11-16 12:15:09,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 12:15:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2233 transitions. [2022-11-16 12:15:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 12:15:09,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:09,055 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:15:09,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:15:09,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1486977360, now seen corresponding path program 1 times [2022-11-16 12:15:09,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:09,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056265905] [2022-11-16 12:15:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:15:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:15:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:15:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:15:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:15:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:15:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:15:09,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:09,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056265905] [2022-11-16 12:15:09,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056265905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:09,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:09,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:15:09,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175498095] [2022-11-16 12:15:09,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:09,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:15:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:15:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:15:09,257 INFO L87 Difference]: Start difference. First operand 1731 states and 2233 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:15:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:11,596 INFO L93 Difference]: Finished difference Result 4157 states and 5338 transitions. [2022-11-16 12:15:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:15:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-11-16 12:15:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:11,614 INFO L225 Difference]: With dead ends: 4157 [2022-11-16 12:15:11,614 INFO L226 Difference]: Without dead ends: 2533 [2022-11-16 12:15:11,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:15:11,624 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2041 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:11,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 1452 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:15:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-11-16 12:15:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2338. [2022-11-16 12:15:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2711496746203905) internal successors, (2344), 1879 states have internal predecessors, (2344), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-16 12:15:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2972 transitions. [2022-11-16 12:15:11,921 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2972 transitions. Word has length 92 [2022-11-16 12:15:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:11,923 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2972 transitions. [2022-11-16 12:15:11,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:15:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2972 transitions. [2022-11-16 12:15:11,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:11,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:11,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:15:11,928 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:11,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 330043274, now seen corresponding path program 1 times [2022-11-16 12:15:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:11,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494679231] [2022-11-16 12:15:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:12,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:12,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494679231] [2022-11-16 12:15:12,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494679231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:12,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:12,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945259547] [2022-11-16 12:15:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:15:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:15:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:15:12,090 INFO L87 Difference]: Start difference. First operand 2338 states and 2972 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:14,321 INFO L93 Difference]: Finished difference Result 2671 states and 3504 transitions. [2022-11-16 12:15:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:15:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:14,337 INFO L225 Difference]: With dead ends: 2671 [2022-11-16 12:15:14,337 INFO L226 Difference]: Without dead ends: 2425 [2022-11-16 12:15:14,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:15:14,340 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 769 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:14,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 772 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:15:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-11-16 12:15:14,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2338. [2022-11-16 12:15:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2706073752711498) internal successors, (2343), 1879 states have internal predecessors, (2343), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-16 12:15:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2971 transitions. [2022-11-16 12:15:14,811 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2971 transitions. Word has length 123 [2022-11-16 12:15:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:14,812 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2971 transitions. [2022-11-16 12:15:14,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2971 transitions. [2022-11-16 12:15:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:14,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:14,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:14,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:15:14,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:14,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1598888952, now seen corresponding path program 1 times [2022-11-16 12:15:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:14,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25176991] [2022-11-16 12:15:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:14,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:15,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:15,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25176991] [2022-11-16 12:15:15,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25176991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:15,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:15,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:15:15,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732462193] [2022-11-16 12:15:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:15,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:15,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:15,077 INFO L87 Difference]: Start difference. First operand 2338 states and 2971 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:18,647 INFO L93 Difference]: Finished difference Result 2994 states and 4018 transitions. [2022-11-16 12:15:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:15:18,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:18,717 INFO L225 Difference]: With dead ends: 2994 [2022-11-16 12:15:18,717 INFO L226 Difference]: Without dead ends: 2757 [2022-11-16 12:15:18,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:15:18,720 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 1224 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:18,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 1215 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:15:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-11-16 12:15:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2584. [2022-11-16 12:15:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2067 states have (on average 1.3033381712626995) internal successors, (2694), 2103 states have internal predecessors, (2694), 278 states have call successors, (278), 174 states have call predecessors, (278), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-11-16 12:15:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3357 transitions. [2022-11-16 12:15:19,189 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3357 transitions. Word has length 123 [2022-11-16 12:15:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:19,189 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3357 transitions. [2022-11-16 12:15:19,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:19,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3357 transitions. [2022-11-16 12:15:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:19,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:19,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:19,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:15:19,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:19,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:19,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1970514316, now seen corresponding path program 1 times [2022-11-16 12:15:19,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:19,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903777843] [2022-11-16 12:15:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:19,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:19,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903777843] [2022-11-16 12:15:19,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903777843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:19,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:19,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428511771] [2022-11-16 12:15:19,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:19,543 INFO L87 Difference]: Start difference. First operand 2584 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:23,960 INFO L93 Difference]: Finished difference Result 3582 states and 4947 transitions. [2022-11-16 12:15:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:15:23,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:23,978 INFO L225 Difference]: With dead ends: 3582 [2022-11-16 12:15:23,978 INFO L226 Difference]: Without dead ends: 3099 [2022-11-16 12:15:23,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:15:23,981 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1239 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:23,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 1917 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 12:15:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-11-16 12:15:24,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2813. [2022-11-16 12:15:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2273 states have (on average 1.3246810382754068) internal successors, (3011), 2310 states have internal predecessors, (3011), 294 states have call successors, (294), 180 states have call predecessors, (294), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-11-16 12:15:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3708 transitions. [2022-11-16 12:15:24,481 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3708 transitions. Word has length 123 [2022-11-16 12:15:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:24,482 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 3708 transitions. [2022-11-16 12:15:24,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3708 transitions. [2022-11-16 12:15:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:24,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:24,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:15:24,486 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:24,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:24,487 INFO L85 PathProgramCache]: Analyzing trace with hash -935158966, now seen corresponding path program 1 times [2022-11-16 12:15:24,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:24,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259535801] [2022-11-16 12:15:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:24,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:24,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:24,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:24,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259535801] [2022-11-16 12:15:24,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259535801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:24,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:24,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:24,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096210987] [2022-11-16 12:15:24,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:24,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:24,784 INFO L87 Difference]: Start difference. First operand 2813 states and 3708 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:28,841 INFO L93 Difference]: Finished difference Result 4448 states and 6306 transitions. [2022-11-16 12:15:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:15:28,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:28,863 INFO L225 Difference]: With dead ends: 4448 [2022-11-16 12:15:28,863 INFO L226 Difference]: Without dead ends: 3736 [2022-11-16 12:15:28,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:15:28,869 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1311 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:28,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 1381 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 12:15:28,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-11-16 12:15:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3272. [2022-11-16 12:15:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 2686 states have (on average 1.3574087862993298) internal successors, (3646), 2725 states have internal predecessors, (3646), 326 states have call successors, (326), 192 states have call predecessors, (326), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-11-16 12:15:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4415 transitions. [2022-11-16 12:15:29,619 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4415 transitions. Word has length 123 [2022-11-16 12:15:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:29,620 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4415 transitions. [2022-11-16 12:15:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4415 transitions. [2022-11-16 12:15:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:29,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:29,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:29,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:15:29,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1326414284, now seen corresponding path program 1 times [2022-11-16 12:15:29,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:29,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151427602] [2022-11-16 12:15:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:29,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:29,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:29,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151427602] [2022-11-16 12:15:29,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151427602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:29,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:29,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:29,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974581895] [2022-11-16 12:15:29,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:29,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:29,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:29,948 INFO L87 Difference]: Start difference. First operand 3272 states and 4415 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:34,324 INFO L93 Difference]: Finished difference Result 6115 states and 8909 transitions. [2022-11-16 12:15:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:15:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:34,350 INFO L225 Difference]: With dead ends: 6115 [2022-11-16 12:15:34,351 INFO L226 Difference]: Without dead ends: 4944 [2022-11-16 12:15:34,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:15:34,358 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1237 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:34,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1915 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 12:15:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-11-16 12:15:35,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4191. [2022-11-16 12:15:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3993737546256761) internal successors, (4916), 3556 states have internal predecessors, (4916), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-16 12:15:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5835 transitions. [2022-11-16 12:15:35,149 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5835 transitions. Word has length 123 [2022-11-16 12:15:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:35,150 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5835 transitions. [2022-11-16 12:15:35,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5835 transitions. [2022-11-16 12:15:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:35,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:35,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:15:35,156 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -540294390, now seen corresponding path program 1 times [2022-11-16 12:15:35,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:35,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309460944] [2022-11-16 12:15:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:35,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:35,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309460944] [2022-11-16 12:15:35,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309460944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:35,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:35,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365717848] [2022-11-16 12:15:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:35,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:35,511 INFO L87 Difference]: Start difference. First operand 4191 states and 5835 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:38,481 INFO L93 Difference]: Finished difference Result 7039 states and 10364 transitions. [2022-11-16 12:15:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:15:38,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:38,504 INFO L225 Difference]: With dead ends: 7039 [2022-11-16 12:15:38,505 INFO L226 Difference]: Without dead ends: 4949 [2022-11-16 12:15:38,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:15:38,514 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 968 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:38,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1123 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 12:15:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-11-16 12:15:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4191. [2022-11-16 12:15:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3968118417307145) internal successors, (4907), 3556 states have internal predecessors, (4907), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-16 12:15:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5826 transitions. [2022-11-16 12:15:39,198 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5826 transitions. Word has length 123 [2022-11-16 12:15:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:39,199 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5826 transitions. [2022-11-16 12:15:39,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5826 transitions. [2022-11-16 12:15:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:39,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:39,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:39,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:15:39,205 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1357202376, now seen corresponding path program 1 times [2022-11-16 12:15:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:39,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392390105] [2022-11-16 12:15:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:39,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:39,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392390105] [2022-11-16 12:15:39,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392390105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:39,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:39,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664778651] [2022-11-16 12:15:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:39,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:39,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:39,432 INFO L87 Difference]: Start difference. First operand 4191 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:41,827 INFO L93 Difference]: Finished difference Result 7029 states and 10317 transitions. [2022-11-16 12:15:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:15:41,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:41,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:41,875 INFO L225 Difference]: With dead ends: 7029 [2022-11-16 12:15:41,876 INFO L226 Difference]: Without dead ends: 4939 [2022-11-16 12:15:41,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:15:41,893 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1127 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:41,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 934 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:15:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2022-11-16 12:15:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4191. [2022-11-16 12:15:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3942499288357528) internal successors, (4898), 3556 states have internal predecessors, (4898), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-16 12:15:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5817 transitions. [2022-11-16 12:15:42,561 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5817 transitions. Word has length 123 [2022-11-16 12:15:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:42,562 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5817 transitions. [2022-11-16 12:15:42,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5817 transitions. [2022-11-16 12:15:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:42,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:42,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:42,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:15:42,567 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:42,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1906724022, now seen corresponding path program 1 times [2022-11-16 12:15:42,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:42,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165449528] [2022-11-16 12:15:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:42,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:42,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:42,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165449528] [2022-11-16 12:15:42,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165449528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:42,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:42,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:42,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474329986] [2022-11-16 12:15:42,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:42,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:42,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:42,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:42,766 INFO L87 Difference]: Start difference. First operand 4191 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:45,472 INFO L93 Difference]: Finished difference Result 7019 states and 10270 transitions. [2022-11-16 12:15:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:15:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:45,493 INFO L225 Difference]: With dead ends: 7019 [2022-11-16 12:15:45,493 INFO L226 Difference]: Without dead ends: 4929 [2022-11-16 12:15:45,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:15:45,501 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 964 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:45,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1123 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:15:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4929 states. [2022-11-16 12:15:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4929 to 4191. [2022-11-16 12:15:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3916880159407914) internal successors, (4889), 3556 states have internal predecessors, (4889), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-16 12:15:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5808 transitions. [2022-11-16 12:15:46,252 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5808 transitions. Word has length 123 [2022-11-16 12:15:46,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:46,253 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5808 transitions. [2022-11-16 12:15:46,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5808 transitions. [2022-11-16 12:15:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:46,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:46,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:46,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:15:46,258 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash 481840008, now seen corresponding path program 1 times [2022-11-16 12:15:46,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:46,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834051704] [2022-11-16 12:15:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:46,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:46,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834051704] [2022-11-16 12:15:46,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834051704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:46,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:46,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568310366] [2022-11-16 12:15:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:46,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:46,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:46,494 INFO L87 Difference]: Start difference. First operand 4191 states and 5808 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:52,207 INFO L93 Difference]: Finished difference Result 10267 states and 15225 transitions. [2022-11-16 12:15:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:15:52,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:15:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:52,238 INFO L225 Difference]: With dead ends: 10267 [2022-11-16 12:15:52,238 INFO L226 Difference]: Without dead ends: 8177 [2022-11-16 12:15:52,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:15:52,248 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1285 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:52,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 1905 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 12:15:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2022-11-16 12:15:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 6046. [2022-11-16 12:15:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6046 states, 5192 states have (on average 1.4335516178736518) internal successors, (7443), 5243 states have internal predecessors, (7443), 510 states have call successors, (510), 264 states have call predecessors, (510), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-11-16 12:15:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 8664 transitions. [2022-11-16 12:15:53,404 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 8664 transitions. Word has length 123 [2022-11-16 12:15:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:53,405 INFO L495 AbstractCegarLoop]: Abstraction has 6046 states and 8664 transitions. [2022-11-16 12:15:53,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:15:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 8664 transitions. [2022-11-16 12:15:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:15:53,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:53,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:53,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:15:53,411 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:53,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:53,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2082911114, now seen corresponding path program 1 times [2022-11-16 12:15:53,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:53,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150777915] [2022-11-16 12:15:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:53,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:53,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:15:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:15:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:15:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:15:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:15:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:53,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150777915] [2022-11-16 12:15:53,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150777915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:53,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:53,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:15:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633793550] [2022-11-16 12:15:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:15:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:15:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:53,617 INFO L87 Difference]: Start difference. First operand 6046 states and 8664 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:00,113 INFO L93 Difference]: Finished difference Result 17532 states and 26495 transitions. [2022-11-16 12:16:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:16:00,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:16:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:00,169 INFO L225 Difference]: With dead ends: 17532 [2022-11-16 12:16:00,170 INFO L226 Difference]: Without dead ends: 13587 [2022-11-16 12:16:00,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:16:00,187 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1462 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:00,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1901 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-16 12:16:00,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13587 states. [2022-11-16 12:16:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13587 to 9659. [2022-11-16 12:16:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9659 states, 8461 states have (on average 1.4670842689989363) internal successors, (12413), 8528 states have internal predecessors, (12413), 742 states have call successors, (742), 360 states have call predecessors, (742), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-11-16 12:16:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9659 states to 9659 states and 14276 transitions. [2022-11-16 12:16:01,810 INFO L78 Accepts]: Start accepts. Automaton has 9659 states and 14276 transitions. Word has length 123 [2022-11-16 12:16:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:01,810 INFO L495 AbstractCegarLoop]: Abstraction has 9659 states and 14276 transitions. [2022-11-16 12:16:01,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9659 states and 14276 transitions. [2022-11-16 12:16:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:16:01,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:01,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:01,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:16:01,819 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1026179912, now seen corresponding path program 1 times [2022-11-16 12:16:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669601796] [2022-11-16 12:16:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:16:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:16:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:16:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:02,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669601796] [2022-11-16 12:16:02,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669601796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:02,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:02,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:02,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902112343] [2022-11-16 12:16:02,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:02,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:02,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:02,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:02,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:02,054 INFO L87 Difference]: Start difference. First operand 9659 states and 14276 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:10,741 INFO L93 Difference]: Finished difference Result 31519 states and 48365 transitions. [2022-11-16 12:16:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:16:10,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:16:10,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:10,833 INFO L225 Difference]: With dead ends: 31519 [2022-11-16 12:16:10,833 INFO L226 Difference]: Without dead ends: 23961 [2022-11-16 12:16:10,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:16:10,865 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1325 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:10,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 1377 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-16 12:16:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2022-11-16 12:16:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 16948. [2022-11-16 12:16:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16948 states, 15078 states have (on average 1.4919087412123624) internal successors, (22495), 15177 states have internal predecessors, (22495), 1190 states have call successors, (1190), 552 states have call predecessors, (1190), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-11-16 12:16:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16948 states to 16948 states and 25772 transitions. [2022-11-16 12:16:14,304 INFO L78 Accepts]: Start accepts. Automaton has 16948 states and 25772 transitions. Word has length 123 [2022-11-16 12:16:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:14,305 INFO L495 AbstractCegarLoop]: Abstraction has 16948 states and 25772 transitions. [2022-11-16 12:16:14,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 16948 states and 25772 transitions. [2022-11-16 12:16:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:16:14,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:14,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:14,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:16:14,320 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1917402166, now seen corresponding path program 1 times [2022-11-16 12:16:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:14,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085734052] [2022-11-16 12:16:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:14,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:16:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:16:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:16:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:14,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:14,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085734052] [2022-11-16 12:16:14,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085734052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:14,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:14,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447593242] [2022-11-16 12:16:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:14,561 INFO L87 Difference]: Start difference. First operand 16948 states and 25772 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:28,338 INFO L93 Difference]: Finished difference Result 59110 states and 92163 transitions. [2022-11-16 12:16:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:16:28,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:16:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:28,525 INFO L225 Difference]: With dead ends: 59110 [2022-11-16 12:16:28,526 INFO L226 Difference]: Without dead ends: 44263 [2022-11-16 12:16:28,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:16:28,574 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1389 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:28,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 1905 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-16 12:16:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44263 states. [2022-11-16 12:16:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44263 to 31493. [2022-11-16 12:16:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5078591360248668) internal successors, (42689), 28474 states have internal predecessors, (42689), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-16 12:16:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49216 transitions. [2022-11-16 12:16:35,068 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49216 transitions. Word has length 123 [2022-11-16 12:16:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:35,069 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49216 transitions. [2022-11-16 12:16:35,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49216 transitions. [2022-11-16 12:16:35,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:16:35,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:35,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:35,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:16:35,099 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:35,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:35,100 INFO L85 PathProgramCache]: Analyzing trace with hash 758590216, now seen corresponding path program 1 times [2022-11-16 12:16:35,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:35,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919127285] [2022-11-16 12:16:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:35,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:16:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:16:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:16:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:35,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:35,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919127285] [2022-11-16 12:16:35,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919127285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:35,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:35,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585937061] [2022-11-16 12:16:35,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:35,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:35,352 INFO L87 Difference]: Start difference. First operand 31493 states and 49216 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:45,995 INFO L93 Difference]: Finished difference Result 69211 states and 110899 transitions. [2022-11-16 12:16:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:45,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-16 12:16:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:46,159 INFO L225 Difference]: With dead ends: 69211 [2022-11-16 12:16:46,160 INFO L226 Difference]: Without dead ends: 39819 [2022-11-16 12:16:46,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:46,233 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 968 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:46,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1121 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:16:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39819 states. [2022-11-16 12:16:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39819 to 31493. [2022-11-16 12:16:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5033026032284271) internal successors, (42560), 28474 states have internal predecessors, (42560), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-16 12:16:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49087 transitions. [2022-11-16 12:16:52,650 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49087 transitions. Word has length 123 [2022-11-16 12:16:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:52,650 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49087 transitions. [2022-11-16 12:16:52,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49087 transitions. [2022-11-16 12:16:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:16:52,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:52,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:52,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:16:52,671 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:52,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash 730089926, now seen corresponding path program 1 times [2022-11-16 12:16:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:52,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944518293] [2022-11-16 12:16:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:52,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:16:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:16:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:16:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:52,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:52,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944518293] [2022-11-16 12:16:52,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944518293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:52,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:52,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582234288] [2022-11-16 12:16:52,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:52,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:52,881 INFO L87 Difference]: Start difference. First operand 31493 states and 49087 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)