./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ --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 86aaf7922fe6f7f87277fe3baca1629811408ccdafec5bb956830ba2f5ff28a9 --- 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-dbf71c6-m [2022-10-17 10:11:15,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:11:15,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:11:15,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:11:15,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:11:15,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:11:15,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:11:15,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:11:15,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:11:15,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:11:15,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:11:15,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:11:15,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:11:15,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:11:15,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:11:15,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:11:15,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:11:15,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:11:15,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:11:15,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:11:15,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:11:15,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:11:15,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:11:15,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:11:15,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:11:15,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:11:15,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:11:15,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:11:15,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:11:15,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:11:15,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:11:15,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:11:15,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:11:15,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:11:15,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:11:15,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:11:15,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:11:15,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:11:15,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:11:15,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:11:15,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:11:15,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:11:15,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:11:15,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:11:15,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:11:15,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:11:15,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:11:15,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:11:15,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:11:15,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:11:15,888 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:11:15,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:11:15,890 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:11:15,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:11:15,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:11:15,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:11:15,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:11:15,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:11:15,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:11:15,891 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:11:15,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:11:15,892 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:11:15,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:11:15,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:11:15,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:11:15,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:11:15,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:15,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:11:15,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:11:15,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:11:15,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:11:15,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:11:15,894 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:11:15,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:11:15,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:11:15,895 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_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86aaf7922fe6f7f87277fe3baca1629811408ccdafec5bb956830ba2f5ff28a9 [2022-10-17 10:11:16,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:11:16,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:11:16,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:11:16,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:11:16,267 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:11:16,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-10-17 10:11:16,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/data/f0555a2ab/a02bb7390d2d4d9c8d4a1fdb1c5dfba1/FLAG1b5caeadc [2022-10-17 10:11:16,890 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:11:16,891 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-10-17 10:11:16,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/data/f0555a2ab/a02bb7390d2d4d9c8d4a1fdb1c5dfba1/FLAG1b5caeadc [2022-10-17 10:11:17,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/data/f0555a2ab/a02bb7390d2d4d9c8d4a1fdb1c5dfba1 [2022-10-17 10:11:17,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:11:17,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:11:17,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:17,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:11:17,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:11:17,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b04146f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17, skipping insertion in model container [2022-10-17 10:11:17,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:11:17,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:11:17,626 WARN L230 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_1d2faa27-4113-437f-92d6-f20728a0f9e6/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c[28194,28207] [2022-10-17 10:11:17,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:17,644 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:11:17,783 WARN L230 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_1d2faa27-4113-437f-92d6-f20728a0f9e6/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c[28194,28207] [2022-10-17 10:11:17,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:17,810 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:11:17,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17 WrapperNode [2022-10-17 10:11:17,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:17,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:17,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:11:17,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:11:17,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,933 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 951 [2022-10-17 10:11:17,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:17,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:11:17,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:11:17,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:11:17,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:17,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:18,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:18,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:18,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:18,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:11:18,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:11:18,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:11:18,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:11:18,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (1/1) ... [2022-10-17 10:11:18,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:18,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:18,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:11:18,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2faa27-4113-437f-92d6-f20728a0f9e6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:11:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:11:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:11:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:11:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:11:18,295 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:11:18,297 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:11:19,523 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:11:19,543 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:11:19,544 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:11:19,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:19 BoogieIcfgContainer [2022-10-17 10:11:19,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:11:19,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:11:19,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:11:19,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:11:19,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:11:17" (1/3) ... [2022-10-17 10:11:19,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6667767c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:19, skipping insertion in model container [2022-10-17 10:11:19,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:17" (2/3) ... [2022-10-17 10:11:19,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6667767c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:19, skipping insertion in model container [2022-10-17 10:11:19,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:19" (3/3) ... [2022-10-17 10:11:19,560 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-10-17 10:11:19,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:11:19,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:11:19,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:11:19,674 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;@35ba40f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:11:19,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:11:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 302 states have (on average 1.8079470198675496) internal successors, (546), 303 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 10:11:19,709 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:19,710 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] [2022-10-17 10:11:19,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2110216456, now seen corresponding path program 1 times [2022-10-17 10:11:19,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:19,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635669955] [2022-10-17 10:11:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:20,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:20,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635669955] [2022-10-17 10:11:20,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635669955] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:20,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:20,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:11:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692536371] [2022-10-17 10:11:20,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:11:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:20,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:11:20,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:11:20,163 INFO L87 Difference]: Start difference. First operand has 304 states, 302 states have (on average 1.8079470198675496) internal successors, (546), 303 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:20,209 INFO L93 Difference]: Finished difference Result 417 states and 738 transitions. [2022-10-17 10:11:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:11:20,212 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-10-17 10:11:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:20,226 INFO L225 Difference]: With dead ends: 417 [2022-10-17 10:11:20,227 INFO L226 Difference]: Without dead ends: 300 [2022-10-17 10:11:20,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:11:20,235 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:20,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-10-17 10:11:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-10-17 10:11:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.8026755852842808) internal successors, (539), 299 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 539 transitions. [2022-10-17 10:11:20,326 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 539 transitions. Word has length 77 [2022-10-17 10:11:20,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:20,327 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 539 transitions. [2022-10-17 10:11:20,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 539 transitions. [2022-10-17 10:11:20,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 10:11:20,333 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:20,333 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] [2022-10-17 10:11:20,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:11:20,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2050737334, now seen corresponding path program 1 times [2022-10-17 10:11:20,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:20,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644087113] [2022-10-17 10:11:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:20,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644087113] [2022-10-17 10:11:20,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644087113] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:20,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:20,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:11:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095214215] [2022-10-17 10:11:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:11:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:11:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:20,750 INFO L87 Difference]: Start difference. First operand 300 states and 539 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:20,897 INFO L93 Difference]: Finished difference Result 412 states and 728 transitions. [2022-10-17 10:11:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:11:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-10-17 10:11:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:20,903 INFO L225 Difference]: With dead ends: 412 [2022-10-17 10:11:20,904 INFO L226 Difference]: Without dead ends: 300 [2022-10-17 10:11:20,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:11:20,913 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 3 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:20,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2103 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:11:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-10-17 10:11:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-10-17 10:11:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.6622073578595318) internal successors, (497), 299 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 497 transitions. [2022-10-17 10:11:20,946 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 497 transitions. Word has length 77 [2022-10-17 10:11:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:20,949 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 497 transitions. [2022-10-17 10:11:20,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 497 transitions. [2022-10-17 10:11:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 10:11:20,961 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:20,961 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] [2022-10-17 10:11:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:11:20,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 255571390, now seen corresponding path program 1 times [2022-10-17 10:11:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:20,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974969783] [2022-10-17 10:11:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:20,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:21,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974969783] [2022-10-17 10:11:21,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974969783] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:21,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:21,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006506768] [2022-10-17 10:11:21,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:21,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:21,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:21,212 INFO L87 Difference]: Start difference. First operand 300 states and 497 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:21,262 INFO L93 Difference]: Finished difference Result 505 states and 846 transitions. [2022-10-17 10:11:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:21,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-10-17 10:11:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:21,266 INFO L225 Difference]: With dead ends: 505 [2022-10-17 10:11:21,267 INFO L226 Difference]: Without dead ends: 397 [2022-10-17 10:11:21,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:21,278 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 156 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:21,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1076 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-10-17 10:11:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2022-10-17 10:11:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.6624365482233503) internal successors, (655), 394 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 655 transitions. [2022-10-17 10:11:21,310 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 655 transitions. Word has length 118 [2022-10-17 10:11:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:21,312 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 655 transitions. [2022-10-17 10:11:21,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 655 transitions. [2022-10-17 10:11:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:11:21,320 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:21,320 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] [2022-10-17 10:11:21,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:11:21,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1923540700, now seen corresponding path program 1 times [2022-10-17 10:11:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:21,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104807855] [2022-10-17 10:11:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:21,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104807855] [2022-10-17 10:11:21,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104807855] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:21,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:21,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138657138] [2022-10-17 10:11:21,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:21,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:21,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:21,545 INFO L87 Difference]: Start difference. First operand 395 states and 655 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:21,578 INFO L93 Difference]: Finished difference Result 593 states and 993 transitions. [2022-10-17 10:11:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-10-17 10:11:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:21,584 INFO L225 Difference]: With dead ends: 593 [2022-10-17 10:11:21,584 INFO L226 Difference]: Without dead ends: 485 [2022-10-17 10:11:21,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:21,595 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 165 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:21,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-10-17 10:11:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2022-10-17 10:11:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.670124481327801) internal successors, (805), 482 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 805 transitions. [2022-10-17 10:11:21,624 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 805 transitions. Word has length 121 [2022-10-17 10:11:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:21,625 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 805 transitions. [2022-10-17 10:11:21,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 805 transitions. [2022-10-17 10:11:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:11:21,627 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:21,628 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] [2022-10-17 10:11:21,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:11:21,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1109580608, now seen corresponding path program 1 times [2022-10-17 10:11:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:21,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074045869] [2022-10-17 10:11:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:21,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074045869] [2022-10-17 10:11:21,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074045869] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:21,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:21,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:21,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87030937] [2022-10-17 10:11:21,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:21,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:21,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:21,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:21,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:21,797 INFO L87 Difference]: Start difference. First operand 483 states and 805 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:21,842 INFO L93 Difference]: Finished difference Result 1034 states and 1736 transitions. [2022-10-17 10:11:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:21,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-10-17 10:11:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:21,848 INFO L225 Difference]: With dead ends: 1034 [2022-10-17 10:11:21,848 INFO L226 Difference]: Without dead ends: 745 [2022-10-17 10:11:21,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:21,850 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 157 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:21,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1078 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-10-17 10:11:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 743. [2022-10-17 10:11:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.6725067385444743) internal successors, (1241), 742 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1241 transitions. [2022-10-17 10:11:21,884 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1241 transitions. Word has length 121 [2022-10-17 10:11:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:21,885 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1241 transitions. [2022-10-17 10:11:21,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1241 transitions. [2022-10-17 10:11:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:11:21,890 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:21,891 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, 1] [2022-10-17 10:11:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:11:21,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2073181113, now seen corresponding path program 1 times [2022-10-17 10:11:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:21,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071891473] [2022-10-17 10:11:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:22,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071891473] [2022-10-17 10:11:22,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071891473] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:22,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:22,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399974117] [2022-10-17 10:11:22,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:22,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:22,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:22,083 INFO L87 Difference]: Start difference. First operand 743 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:22,124 INFO L93 Difference]: Finished difference Result 1274 states and 2138 transitions. [2022-10-17 10:11:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:22,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-10-17 10:11:22,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:22,132 INFO L225 Difference]: With dead ends: 1274 [2022-10-17 10:11:22,132 INFO L226 Difference]: Without dead ends: 985 [2022-10-17 10:11:22,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:22,134 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 158 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:22,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1082 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-10-17 10:11:22,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 983. [2022-10-17 10:11:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 982 states have (on average 1.6720977596741344) internal successors, (1642), 982 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1642 transitions. [2022-10-17 10:11:22,207 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1642 transitions. Word has length 124 [2022-10-17 10:11:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:22,208 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1642 transitions. [2022-10-17 10:11:22,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1642 transitions. [2022-10-17 10:11:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:11:22,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:22,211 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, 1] [2022-10-17 10:11:22,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:11:22,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1914082347, now seen corresponding path program 1 times [2022-10-17 10:11:22,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:22,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280826696] [2022-10-17 10:11:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:22,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:22,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280826696] [2022-10-17 10:11:22,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280826696] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:22,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:22,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:22,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682047900] [2022-10-17 10:11:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:22,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:22,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:22,390 INFO L87 Difference]: Start difference. First operand 983 states and 1642 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:22,470 INFO L93 Difference]: Finished difference Result 2454 states and 4107 transitions. [2022-10-17 10:11:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:22,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-10-17 10:11:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:22,481 INFO L225 Difference]: With dead ends: 2454 [2022-10-17 10:11:22,481 INFO L226 Difference]: Without dead ends: 1678 [2022-10-17 10:11:22,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:22,484 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 150 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:22,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1060 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-10-17 10:11:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1676. [2022-10-17 10:11:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1675 states have (on average 1.6644776119402984) internal successors, (2788), 1675 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2788 transitions. [2022-10-17 10:11:22,590 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2788 transitions. Word has length 124 [2022-10-17 10:11:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:22,590 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2788 transitions. [2022-10-17 10:11:22,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2788 transitions. [2022-10-17 10:11:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:11:22,593 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:22,593 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, 1, 1, 1, 1] [2022-10-17 10:11:22,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:11:22,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:22,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1459354075, now seen corresponding path program 1 times [2022-10-17 10:11:22,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:22,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279790595] [2022-10-17 10:11:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:22,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:22,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279790595] [2022-10-17 10:11:22,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279790595] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:22,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:22,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:22,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186003656] [2022-10-17 10:11:22,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:22,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:22,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:22,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:22,748 INFO L87 Difference]: Start difference. First operand 1676 states and 2788 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:22,826 INFO L93 Difference]: Finished difference Result 3061 states and 5111 transitions. [2022-10-17 10:11:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:22,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-10-17 10:11:22,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:22,841 INFO L225 Difference]: With dead ends: 3061 [2022-10-17 10:11:22,841 INFO L226 Difference]: Without dead ends: 2285 [2022-10-17 10:11:22,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:22,844 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 151 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:22,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1063 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-10-17 10:11:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-10-17 10:11:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2282 states have (on average 1.661262050832603) internal successors, (3791), 2282 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3791 transitions. [2022-10-17 10:11:22,982 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3791 transitions. Word has length 127 [2022-10-17 10:11:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:22,982 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 3791 transitions. [2022-10-17 10:11:22,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3791 transitions. [2022-10-17 10:11:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:11:22,984 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:22,985 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, 1, 1, 1, 1] [2022-10-17 10:11:22,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:11:22,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:22,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:22,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1832413193, now seen corresponding path program 1 times [2022-10-17 10:11:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:22,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743697270] [2022-10-17 10:11:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:22,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:23,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:23,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743697270] [2022-10-17 10:11:23,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743697270] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:23,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:23,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589382545] [2022-10-17 10:11:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:23,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:23,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:23,135 INFO L87 Difference]: Start difference. First operand 2283 states and 3791 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:23,276 INFO L93 Difference]: Finished difference Result 6166 states and 10210 transitions. [2022-10-17 10:11:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:23,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-10-17 10:11:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:23,302 INFO L225 Difference]: With dead ends: 6166 [2022-10-17 10:11:23,303 INFO L226 Difference]: Without dead ends: 4103 [2022-10-17 10:11:23,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:23,307 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 143 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:23,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1042 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2022-10-17 10:11:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2022-10-17 10:11:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4100 states have (on average 1.6446341463414633) internal successors, (6743), 4100 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6743 transitions. [2022-10-17 10:11:23,517 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6743 transitions. Word has length 127 [2022-10-17 10:11:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:23,517 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 6743 transitions. [2022-10-17 10:11:23,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6743 transitions. [2022-10-17 10:11:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-10-17 10:11:23,520 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:23,520 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:23,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:11:23,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1181394736, now seen corresponding path program 1 times [2022-10-17 10:11:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:23,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535304441] [2022-10-17 10:11:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:23,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:23,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:23,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535304441] [2022-10-17 10:11:23,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535304441] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:23,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:23,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248768028] [2022-10-17 10:11:23,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:23,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:23,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:23,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:23,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:23,680 INFO L87 Difference]: Start difference. First operand 4101 states and 6743 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:23,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:23,921 INFO L93 Difference]: Finished difference Result 7700 states and 12696 transitions. [2022-10-17 10:11:23,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:23,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-10-17 10:11:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:23,959 INFO L225 Difference]: With dead ends: 7700 [2022-10-17 10:11:23,959 INFO L226 Difference]: Without dead ends: 5637 [2022-10-17 10:11:23,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:23,966 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 144 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:23,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1044 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:11:23,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2022-10-17 10:11:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 5635. [2022-10-17 10:11:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5635 states, 5634 states have (on average 1.637912673056443) internal successors, (9228), 5634 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5635 states to 5635 states and 9228 transitions. [2022-10-17 10:11:24,303 INFO L78 Accepts]: Start accepts. Automaton has 5635 states and 9228 transitions. Word has length 130 [2022-10-17 10:11:24,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:24,304 INFO L495 AbstractCegarLoop]: Abstraction has 5635 states and 9228 transitions. [2022-10-17 10:11:24,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5635 states and 9228 transitions. [2022-10-17 10:11:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-10-17 10:11:24,306 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:24,306 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:24,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:11:24,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:24,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash -163814164, now seen corresponding path program 1 times [2022-10-17 10:11:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:24,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161815019] [2022-10-17 10:11:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:24,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161815019] [2022-10-17 10:11:24,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161815019] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:24,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:24,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:11:24,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724763541] [2022-10-17 10:11:24,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:24,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:11:24,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:24,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:11:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:11:24,584 INFO L87 Difference]: Start difference. First operand 5635 states and 9228 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:26,303 INFO L93 Difference]: Finished difference Result 35981 states and 59438 transitions. [2022-10-17 10:11:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:11:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-10-17 10:11:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:26,439 INFO L225 Difference]: With dead ends: 35981 [2022-10-17 10:11:26,440 INFO L226 Difference]: Without dead ends: 30579 [2022-10-17 10:11:26,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:11:26,455 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1750 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:26,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 3477 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:11:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30579 states. [2022-10-17 10:11:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30579 to 10863. [2022-10-17 10:11:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 1.6309151169213774) internal successors, (17715), 10862 states have internal predecessors, (17715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 17715 transitions. [2022-10-17 10:11:27,430 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 17715 transitions. Word has length 130 [2022-10-17 10:11:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:27,431 INFO L495 AbstractCegarLoop]: Abstraction has 10863 states and 17715 transitions. [2022-10-17 10:11:27,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 17715 transitions. [2022-10-17 10:11:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-17 10:11:27,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:27,434 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:27,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:11:27,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1417088843, now seen corresponding path program 1 times [2022-10-17 10:11:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:27,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009686490] [2022-10-17 10:11:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:27,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:27,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009686490] [2022-10-17 10:11:27,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009686490] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:27,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:27,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:27,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847365592] [2022-10-17 10:11:27,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:27,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:27,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:27,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:27,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:27,616 INFO L87 Difference]: Start difference. First operand 10863 states and 17715 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:29,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:29,008 INFO L93 Difference]: Finished difference Result 35693 states and 58589 transitions. [2022-10-17 10:11:29,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:11:29,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-10-17 10:11:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:29,082 INFO L225 Difference]: With dead ends: 35693 [2022-10-17 10:11:29,083 INFO L226 Difference]: Without dead ends: 25063 [2022-10-17 10:11:29,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:29,103 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 531 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:29,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1467 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:11:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25063 states. [2022-10-17 10:11:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25063 to 17908. [2022-10-17 10:11:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17908 states, 17907 states have (on average 1.6314290500921427) internal successors, (29214), 17907 states have internal predecessors, (29214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17908 states to 17908 states and 29214 transitions. [2022-10-17 10:11:30,398 INFO L78 Accepts]: Start accepts. Automaton has 17908 states and 29214 transitions. Word has length 131 [2022-10-17 10:11:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:30,399 INFO L495 AbstractCegarLoop]: Abstraction has 17908 states and 29214 transitions. [2022-10-17 10:11:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 17908 states and 29214 transitions. [2022-10-17 10:11:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-17 10:11:30,401 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:30,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:30,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:11:30,402 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash -945521149, now seen corresponding path program 1 times [2022-10-17 10:11:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:30,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309866797] [2022-10-17 10:11:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:30,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309866797] [2022-10-17 10:11:30,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309866797] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:30,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:30,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:30,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940219702] [2022-10-17 10:11:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:30,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:30,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:30,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:30,578 INFO L87 Difference]: Start difference. First operand 17908 states and 29214 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:32,572 INFO L93 Difference]: Finished difference Result 58507 states and 95667 transitions. [2022-10-17 10:11:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:11:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-10-17 10:11:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:32,672 INFO L225 Difference]: With dead ends: 58507 [2022-10-17 10:11:32,673 INFO L226 Difference]: Without dead ends: 40832 [2022-10-17 10:11:32,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:32,695 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 529 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:32,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1603 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:11:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40832 states. [2022-10-17 10:11:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40832 to 29281. [2022-10-17 10:11:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29281 states, 29280 states have (on average 1.6251024590163934) internal successors, (47583), 29280 states have internal predecessors, (47583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 47583 transitions. [2022-10-17 10:11:34,830 INFO L78 Accepts]: Start accepts. Automaton has 29281 states and 47583 transitions. Word has length 132 [2022-10-17 10:11:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:34,830 INFO L495 AbstractCegarLoop]: Abstraction has 29281 states and 47583 transitions. [2022-10-17 10:11:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 29281 states and 47583 transitions. [2022-10-17 10:11:34,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-10-17 10:11:34,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:34,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:34,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:11:34,834 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1002982526, now seen corresponding path program 1 times [2022-10-17 10:11:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:34,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946913818] [2022-10-17 10:11:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:34,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:34,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946913818] [2022-10-17 10:11:34,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946913818] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:34,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:34,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:34,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885907692] [2022-10-17 10:11:34,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:34,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:35,000 INFO L87 Difference]: Start difference. First operand 29281 states and 47583 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:37,562 INFO L93 Difference]: Finished difference Result 95313 states and 155241 transitions. [2022-10-17 10:11:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:11:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-10-17 10:11:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:37,882 INFO L225 Difference]: With dead ends: 95313 [2022-10-17 10:11:37,882 INFO L226 Difference]: Without dead ends: 66265 [2022-10-17 10:11:37,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:37,928 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 527 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:37,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1599 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:11:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66265 states. [2022-10-17 10:11:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66265 to 47630. [2022-10-17 10:11:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47630 states, 47629 states have (on average 1.6187616788091288) internal successors, (77100), 47629 states have internal predecessors, (77100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47630 states to 47630 states and 77100 transitions. [2022-10-17 10:11:40,462 INFO L78 Accepts]: Start accepts. Automaton has 47630 states and 77100 transitions. Word has length 133 [2022-10-17 10:11:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:40,463 INFO L495 AbstractCegarLoop]: Abstraction has 47630 states and 77100 transitions. [2022-10-17 10:11:40,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 47630 states and 77100 transitions. [2022-10-17 10:11:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 10:11:40,466 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:40,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:40,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 10:11:40,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:40,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1679686426, now seen corresponding path program 1 times [2022-10-17 10:11:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:40,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593799113] [2022-10-17 10:11:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:40,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:40,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:40,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593799113] [2022-10-17 10:11:40,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593799113] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:40,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:40,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:40,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674921651] [2022-10-17 10:11:40,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:40,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:40,642 INFO L87 Difference]: Start difference. First operand 47630 states and 77100 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:45,562 INFO L93 Difference]: Finished difference Result 153319 states and 248743 transitions. [2022-10-17 10:11:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:11:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-10-17 10:11:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:45,841 INFO L225 Difference]: With dead ends: 153319 [2022-10-17 10:11:45,841 INFO L226 Difference]: Without dead ends: 105922 [2022-10-17 10:11:45,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:45,907 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 525 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:45,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1601 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:11:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105922 states.