./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0217.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0217.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:33:17,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:33:17,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:33:17,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:33:17,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:33:17,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:33:17,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:33:17,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:33:17,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:33:17,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:33:17,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:33:17,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:33:17,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:33:17,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:33:17,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:33:17,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:33:17,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:33:17,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:33:17,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:33:17,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:33:17,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:33:17,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:33:17,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:33:17,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:33:17,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:33:17,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:33:17,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:33:17,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:33:17,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:33:17,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:33:17,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:33:17,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:33:17,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:33:17,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:33:17,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:33:17,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:33:17,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:33:17,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:33:17,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:33:17,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:33:17,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:33:17,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 19:33:17,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:33:17,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:33:17,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:33:17,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:33:17,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:33:17,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:33:17,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:33:17,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:33:17,809 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:33:17,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:33:17,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:33:17,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:33:17,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:33:17,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:33:17,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:33:17,810 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:33:17,810 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:33:17,811 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 19:33:17,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:33:17,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:33:17,811 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:33:17,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:33:17,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:33:17,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:33:17,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:33:17,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:33:17,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:33:17,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:33:17,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:33:17,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:33:17,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:33:17,827 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_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec [2021-12-06 19:33:17,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:33:18,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:33:18,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:33:18,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:33:18,019 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:33:18,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/memsafety/test-0217.i [2021-12-06 19:33:18,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/data/3f7fdbcd7/ade7482fad87404d913217b042e15295/FLAG5c38c8f5e [2021-12-06 19:33:18,494 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:33:18,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/sv-benchmarks/c/memsafety/test-0217.i [2021-12-06 19:33:18,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/data/3f7fdbcd7/ade7482fad87404d913217b042e15295/FLAG5c38c8f5e [2021-12-06 19:33:18,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/data/3f7fdbcd7/ade7482fad87404d913217b042e15295 [2021-12-06 19:33:18,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:33:18,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:33:18,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:33:18,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:33:18,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:33:18,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30273c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18, skipping insertion in model container [2021-12-06 19:33:18,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:33:18,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:33:18,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:33:18,795 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:33:18,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:33:18,860 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:33:18,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18 WrapperNode [2021-12-06 19:33:18,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:33:18,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:33:18,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:33:18,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:33:18,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,908 INFO L137 Inliner]: procedures = 181, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2021-12-06 19:33:18,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:33:18,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:33:18,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:33:18,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:33:18,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:33:18,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:33:18,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:33:18,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:33:18,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (1/1) ... [2021-12-06 19:33:18,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:33:18,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:18,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:33:18,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:33:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-12-06 19:33:19,017 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-12-06 19:33:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:33:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:33:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:33:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:33:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:33:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:33:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:33:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:33:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:33:19,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:33:19,116 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:33:19,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:33:19,430 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:33:19,438 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:33:19,438 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 19:33:19,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:33:19 BoogieIcfgContainer [2021-12-06 19:33:19,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:33:19,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:33:19,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:33:19,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:33:19,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:33:18" (1/3) ... [2021-12-06 19:33:19,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463458fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:33:19, skipping insertion in model container [2021-12-06 19:33:19,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:18" (2/3) ... [2021-12-06 19:33:19,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463458fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:33:19, skipping insertion in model container [2021-12-06 19:33:19,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:33:19" (3/3) ... [2021-12-06 19:33:19,448 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0217.i [2021-12-06 19:33:19,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:33:19,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-12-06 19:33:19,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:33:19,502 INFO L339 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:33:19,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-12-06 19:33:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.94) internal successors, (194), 167 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:33:19,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:19,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:33:19,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1074949738, now seen corresponding path program 1 times [2021-12-06 19:33:19,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:19,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975324031] [2021-12-06 19:33:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:19,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:19,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:19,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975324031] [2021-12-06 19:33:19,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975324031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:19,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:19,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:33:19,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799415937] [2021-12-06 19:33:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:19,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:33:19,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:33:19,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:33:19,650 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.94) internal successors, (194), 167 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-06 19:33:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:19,669 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-12-06 19:33:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:33:19,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-12-06 19:33:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:19,677 INFO L225 Difference]: With dead ends: 171 [2021-12-06 19:33:19,677 INFO L226 Difference]: Without dead ends: 169 [2021-12-06 19:33:19,678 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:33:19,681 INFO L933 BasicCegarLoop]: 192 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, 192 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 [2021-12-06 19:33:19,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-06 19:33:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-06 19:33:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 99 states have (on average 1.878787878787879) internal successors, (186), 165 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 190 transitions. [2021-12-06 19:33:19,715 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 190 transitions. Word has length 6 [2021-12-06 19:33:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:19,716 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 190 transitions. [2021-12-06 19:33:19,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-06 19:33:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 190 transitions. [2021-12-06 19:33:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 19:33:19,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:19,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:19,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:33:19,717 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317330, now seen corresponding path program 1 times [2021-12-06 19:33:19,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:19,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501929009] [2021-12-06 19:33:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:19,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:19,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:19,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501929009] [2021-12-06 19:33:19,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501929009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:19,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:19,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-06 19:33:19,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338916546] [2021-12-06 19:33:19,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:19,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:33:19,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:19,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:33:19,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:33:19,776 INFO L87 Difference]: Start difference. First operand 169 states and 190 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-06 19:33:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:19,935 INFO L93 Difference]: Finished difference Result 329 states and 370 transitions. [2021-12-06 19:33:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:33:19,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-12-06 19:33:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:19,939 INFO L225 Difference]: With dead ends: 329 [2021-12-06 19:33:19,940 INFO L226 Difference]: Without dead ends: 329 [2021-12-06 19:33:19,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:33:19,942 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 171 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:19,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 249 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:19,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-06 19:33:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 233. [2021-12-06 19:33:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.8625) internal successors, (298), 226 states have internal predecessors, (298), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:33:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 306 transitions. [2021-12-06 19:33:19,966 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 306 transitions. Word has length 7 [2021-12-06 19:33:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:19,967 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 306 transitions. [2021-12-06 19:33:19,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-06 19:33:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 306 transitions. [2021-12-06 19:33:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 19:33:19,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:19,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:19,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:33:19,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317329, now seen corresponding path program 1 times [2021-12-06 19:33:19,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:19,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194412322] [2021-12-06 19:33:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:19,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:20,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:20,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194412322] [2021-12-06 19:33:20,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194412322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:20,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:20,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:33:20,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652948074] [2021-12-06 19:33:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:20,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:20,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:20,075 INFO L87 Difference]: Start difference. First operand 233 states and 306 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 19:33:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:20,200 INFO L93 Difference]: Finished difference Result 376 states and 474 transitions. [2021-12-06 19:33:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:20,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-06 19:33:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:20,202 INFO L225 Difference]: With dead ends: 376 [2021-12-06 19:33:20,202 INFO L226 Difference]: Without dead ends: 376 [2021-12-06 19:33:20,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:20,203 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 141 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:20,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 422 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-06 19:33:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 310. [2021-12-06 19:33:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 231 states have (on average 1.8225108225108224) internal successors, (421), 299 states have internal predecessors, (421), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 19:33:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2021-12-06 19:33:20,223 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 7 [2021-12-06 19:33:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:20,223 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2021-12-06 19:33:20,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 19:33:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2021-12-06 19:33:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 19:33:20,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:20,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:20,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:33:20,224 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317267, now seen corresponding path program 1 times [2021-12-06 19:33:20,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:20,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032051480] [2021-12-06 19:33:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:20,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:20,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:20,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032051480] [2021-12-06 19:33:20,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032051480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:20,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:20,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:33:20,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138897630] [2021-12-06 19:33:20,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:20,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:20,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:20,296 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 19:33:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:20,404 INFO L93 Difference]: Finished difference Result 375 states and 472 transitions. [2021-12-06 19:33:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-06 19:33:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:20,407 INFO L225 Difference]: With dead ends: 375 [2021-12-06 19:33:20,407 INFO L226 Difference]: Without dead ends: 375 [2021-12-06 19:33:20,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:20,408 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 123 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:20,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 436 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-06 19:33:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 310. [2021-12-06 19:33:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 231 states have (on average 1.8225108225108224) internal successors, (421), 299 states have internal predecessors, (421), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 19:33:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2021-12-06 19:33:20,419 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 7 [2021-12-06 19:33:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:20,419 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2021-12-06 19:33:20,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 19:33:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2021-12-06 19:33:20,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:33:20,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:20,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:20,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:33:20,420 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:20,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1671227278, now seen corresponding path program 1 times [2021-12-06 19:33:20,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:20,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265127719] [2021-12-06 19:33:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:20,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:20,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:20,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265127719] [2021-12-06 19:33:20,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265127719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:20,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:20,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:20,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224375824] [2021-12-06 19:33:20,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:20,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:20,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:20,530 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-06 19:33:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:20,684 INFO L93 Difference]: Finished difference Result 461 states and 621 transitions. [2021-12-06 19:33:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:20,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-12-06 19:33:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:20,688 INFO L225 Difference]: With dead ends: 461 [2021-12-06 19:33:20,688 INFO L226 Difference]: Without dead ends: 461 [2021-12-06 19:33:20,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:33:20,690 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 150 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:20,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 803 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-06 19:33:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 352. [2021-12-06 19:33:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 270 states have (on average 1.8074074074074074) internal successors, (488), 339 states have internal predecessors, (488), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 19:33:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 508 transitions. [2021-12-06 19:33:20,704 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 508 transitions. Word has length 10 [2021-12-06 19:33:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:20,704 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 508 transitions. [2021-12-06 19:33:20,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-06 19:33:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 508 transitions. [2021-12-06 19:33:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:33:20,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:20,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:20,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:33:20,706 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1673074320, now seen corresponding path program 1 times [2021-12-06 19:33:20,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:20,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847164066] [2021-12-06 19:33:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:20,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:20,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:20,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847164066] [2021-12-06 19:33:20,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847164066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:20,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:20,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:20,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588925824] [2021-12-06 19:33:20,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:20,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:20,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:20,793 INFO L87 Difference]: Start difference. First operand 352 states and 508 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-06 19:33:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:20,908 INFO L93 Difference]: Finished difference Result 451 states and 610 transitions. [2021-12-06 19:33:20,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:20,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-12-06 19:33:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:20,911 INFO L225 Difference]: With dead ends: 451 [2021-12-06 19:33:20,912 INFO L226 Difference]: Without dead ends: 451 [2021-12-06 19:33:20,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:20,913 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 131 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:20,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 762 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:20,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-06 19:33:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 351. [2021-12-06 19:33:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 269 states have (on average 1.8104089219330854) internal successors, (487), 338 states have internal predecessors, (487), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 19:33:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 507 transitions. [2021-12-06 19:33:20,926 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 507 transitions. Word has length 10 [2021-12-06 19:33:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:20,927 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 507 transitions. [2021-12-06 19:33:20,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-06 19:33:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 507 transitions. [2021-12-06 19:33:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 19:33:20,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:20,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:20,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:33:20,928 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash 268436822, now seen corresponding path program 1 times [2021-12-06 19:33:20,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:20,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782820681] [2021-12-06 19:33:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:20,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:20,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:20,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782820681] [2021-12-06 19:33:20,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782820681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:20,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:20,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:33:20,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522500568] [2021-12-06 19:33:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:20,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:33:20,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:33:20,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:33:20,951 INFO L87 Difference]: Start difference. First operand 351 states and 507 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-06 19:33:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:21,021 INFO L93 Difference]: Finished difference Result 406 states and 560 transitions. [2021-12-06 19:33:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:33:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-06 19:33:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:21,024 INFO L225 Difference]: With dead ends: 406 [2021-12-06 19:33:21,024 INFO L226 Difference]: Without dead ends: 399 [2021-12-06 19:33:21,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:33:21,025 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 70 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:21,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 287 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-06 19:33:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 348. [2021-12-06 19:33:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 266 states have (on average 1.8120300751879699) internal successors, (482), 335 states have internal predecessors, (482), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 19:33:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 502 transitions. [2021-12-06 19:33:21,038 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 502 transitions. Word has length 11 [2021-12-06 19:33:21,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:21,038 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 502 transitions. [2021-12-06 19:33:21,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-06 19:33:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 502 transitions. [2021-12-06 19:33:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 19:33:21,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:21,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:21,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:33:21,040 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1044692257, now seen corresponding path program 1 times [2021-12-06 19:33:21,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:21,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998462477] [2021-12-06 19:33:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:21,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:21,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:21,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998462477] [2021-12-06 19:33:21,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998462477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:21,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:21,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:33:21,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832345449] [2021-12-06 19:33:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:21,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:21,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:21,088 INFO L87 Difference]: Start difference. First operand 348 states and 502 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:21,271 INFO L93 Difference]: Finished difference Result 570 states and 734 transitions. [2021-12-06 19:33:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:21,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 19:33:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:21,275 INFO L225 Difference]: With dead ends: 570 [2021-12-06 19:33:21,275 INFO L226 Difference]: Without dead ends: 570 [2021-12-06 19:33:21,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:21,276 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 329 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:21,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 434 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-12-06 19:33:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 354. [2021-12-06 19:33:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 272 states have (on average 1.7941176470588236) internal successors, (488), 341 states have internal predecessors, (488), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 19:33:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 508 transitions. [2021-12-06 19:33:21,292 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 508 transitions. Word has length 15 [2021-12-06 19:33:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:21,292 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 508 transitions. [2021-12-06 19:33:21,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 508 transitions. [2021-12-06 19:33:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 19:33:21,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:21,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:21,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:33:21,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:21,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:21,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1044692256, now seen corresponding path program 1 times [2021-12-06 19:33:21,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:21,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465101733] [2021-12-06 19:33:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:21,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:21,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:21,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465101733] [2021-12-06 19:33:21,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465101733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:21,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:21,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:33:21,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358654521] [2021-12-06 19:33:21,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:21,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:21,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:21,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:21,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:21,352 INFO L87 Difference]: Start difference. First operand 354 states and 508 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:21,473 INFO L93 Difference]: Finished difference Result 408 states and 530 transitions. [2021-12-06 19:33:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 19:33:21,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:21,475 INFO L225 Difference]: With dead ends: 408 [2021-12-06 19:33:21,475 INFO L226 Difference]: Without dead ends: 408 [2021-12-06 19:33:21,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:21,476 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 197 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:21,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 445 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-06 19:33:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 354. [2021-12-06 19:33:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 272 states have (on average 1.7610294117647058) internal successors, (479), 341 states have internal predecessors, (479), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 19:33:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 499 transitions. [2021-12-06 19:33:21,485 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 499 transitions. Word has length 15 [2021-12-06 19:33:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:21,485 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 499 transitions. [2021-12-06 19:33:21,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 499 transitions. [2021-12-06 19:33:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:33:21,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:21,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:21,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:33:21,486 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash 742849514, now seen corresponding path program 1 times [2021-12-06 19:33:21,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:21,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886394385] [2021-12-06 19:33:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:21,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:21,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886394385] [2021-12-06 19:33:21,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886394385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:21,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:21,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:33:21,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661916257] [2021-12-06 19:33:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:21,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:33:21,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:33:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:21,542 INFO L87 Difference]: Start difference. First operand 354 states and 499 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:21,817 INFO L93 Difference]: Finished difference Result 707 states and 854 transitions. [2021-12-06 19:33:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 19:33:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:21,821 INFO L225 Difference]: With dead ends: 707 [2021-12-06 19:33:21,822 INFO L226 Difference]: Without dead ends: 707 [2021-12-06 19:33:21,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:21,823 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 867 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:21,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 521 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-12-06 19:33:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 351. [2021-12-06 19:33:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 273 states have (on average 1.7326007326007327) internal successors, (473), 338 states have internal predecessors, (473), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 19:33:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 493 transitions. [2021-12-06 19:33:21,838 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 493 transitions. Word has length 17 [2021-12-06 19:33:21,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:21,839 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 493 transitions. [2021-12-06 19:33:21,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:21,839 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 493 transitions. [2021-12-06 19:33:21,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:33:21,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:21,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:21,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:33:21,840 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash 742849515, now seen corresponding path program 1 times [2021-12-06 19:33:21,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:21,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577356485] [2021-12-06 19:33:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:21,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:21,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:21,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577356485] [2021-12-06 19:33:21,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577356485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:21,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:21,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:21,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418306698] [2021-12-06 19:33:21,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:21,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:33:21,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:21,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:33:21,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:21,953 INFO L87 Difference]: Start difference. First operand 351 states and 493 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:22,430 INFO L93 Difference]: Finished difference Result 766 states and 951 transitions. [2021-12-06 19:33:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:33:22,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 19:33:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:22,434 INFO L225 Difference]: With dead ends: 766 [2021-12-06 19:33:22,434 INFO L226 Difference]: Without dead ends: 766 [2021-12-06 19:33:22,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:33:22,435 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 895 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:22,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 703 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:33:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-06 19:33:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 384. [2021-12-06 19:33:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 304 states have (on average 1.7203947368421053) internal successors, (523), 370 states have internal predecessors, (523), 10 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (14), 8 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 19:33:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 547 transitions. [2021-12-06 19:33:22,454 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 547 transitions. Word has length 17 [2021-12-06 19:33:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:22,454 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 547 transitions. [2021-12-06 19:33:22,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 547 transitions. [2021-12-06 19:33:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:33:22,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:22,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:22,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:33:22,456 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1064604948, now seen corresponding path program 1 times [2021-12-06 19:33:22,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:22,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530954201] [2021-12-06 19:33:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:22,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:22,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:22,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530954201] [2021-12-06 19:33:22,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530954201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:22,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:22,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:22,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56418650] [2021-12-06 19:33:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:22,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:22,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:22,512 INFO L87 Difference]: Start difference. First operand 384 states and 547 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:22,546 INFO L93 Difference]: Finished difference Result 614 states and 849 transitions. [2021-12-06 19:33:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:22,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 19:33:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:22,549 INFO L225 Difference]: With dead ends: 614 [2021-12-06 19:33:22,549 INFO L226 Difference]: Without dead ends: 614 [2021-12-06 19:33:22,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:33:22,550 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 243 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:22,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1549 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-06 19:33:22,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 394. [2021-12-06 19:33:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 311 states have (on average 1.7009646302250805) internal successors, (529), 379 states have internal predecessors, (529), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 559 transitions. [2021-12-06 19:33:22,564 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 559 transitions. Word has length 17 [2021-12-06 19:33:22,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:22,564 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 559 transitions. [2021-12-06 19:33:22,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 559 transitions. [2021-12-06 19:33:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:33:22,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:22,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:22,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:33:22,565 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:22,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1357040557, now seen corresponding path program 1 times [2021-12-06 19:33:22,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:22,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385168590] [2021-12-06 19:33:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:22,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:22,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:22,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385168590] [2021-12-06 19:33:22,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385168590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:22,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:22,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:22,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812974603] [2021-12-06 19:33:22,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:22,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:22,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:22,646 INFO L87 Difference]: Start difference. First operand 394 states and 559 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:23,127 INFO L93 Difference]: Finished difference Result 793 states and 993 transitions. [2021-12-06 19:33:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:33:23,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-06 19:33:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:23,131 INFO L225 Difference]: With dead ends: 793 [2021-12-06 19:33:23,132 INFO L226 Difference]: Without dead ends: 793 [2021-12-06 19:33:23,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:33:23,132 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 545 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:23,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 841 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:33:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-12-06 19:33:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 391. [2021-12-06 19:33:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 308 states have (on average 1.7012987012987013) internal successors, (524), 376 states have internal predecessors, (524), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 554 transitions. [2021-12-06 19:33:23,149 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 554 transitions. Word has length 18 [2021-12-06 19:33:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:23,149 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 554 transitions. [2021-12-06 19:33:23,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 554 transitions. [2021-12-06 19:33:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 19:33:23,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:23,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:23,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:33:23,150 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:23,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1279047357, now seen corresponding path program 1 times [2021-12-06 19:33:23,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:23,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993080641] [2021-12-06 19:33:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:23,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:23,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:23,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993080641] [2021-12-06 19:33:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993080641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:23,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:23,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:33:23,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873292956] [2021-12-06 19:33:23,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:23,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:33:23,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:33:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:23,384 INFO L87 Difference]: Start difference. First operand 391 states and 554 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:23,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:23,863 INFO L93 Difference]: Finished difference Result 744 states and 1021 transitions. [2021-12-06 19:33:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:33:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-06 19:33:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:23,868 INFO L225 Difference]: With dead ends: 744 [2021-12-06 19:33:23,868 INFO L226 Difference]: Without dead ends: 742 [2021-12-06 19:33:23,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:33:23,869 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 523 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:23,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1862 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:33:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-12-06 19:33:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 385. [2021-12-06 19:33:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 302 states have (on average 1.6986754966887416) internal successors, (513), 370 states have internal predecessors, (513), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 543 transitions. [2021-12-06 19:33:23,884 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 543 transitions. Word has length 21 [2021-12-06 19:33:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:23,885 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 543 transitions. [2021-12-06 19:33:23,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 543 transitions. [2021-12-06 19:33:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 19:33:23,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:23,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:23,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:33:23,886 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:23,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2000662896, now seen corresponding path program 1 times [2021-12-06 19:33:23,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:23,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77088156] [2021-12-06 19:33:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:23,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:24,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77088156] [2021-12-06 19:33:24,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77088156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:24,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:24,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:33:24,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046008495] [2021-12-06 19:33:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:24,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:33:24,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:33:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:33:24,039 INFO L87 Difference]: Start difference. First operand 385 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:24,290 INFO L93 Difference]: Finished difference Result 548 states and 728 transitions. [2021-12-06 19:33:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:33:24,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-06 19:33:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:24,292 INFO L225 Difference]: With dead ends: 548 [2021-12-06 19:33:24,293 INFO L226 Difference]: Without dead ends: 548 [2021-12-06 19:33:24,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:33:24,293 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 217 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:24,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 951 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:24,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-06 19:33:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 401. [2021-12-06 19:33:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 318 states have (on average 1.6761006289308176) internal successors, (533), 384 states have internal predecessors, (533), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 563 transitions. [2021-12-06 19:33:24,301 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 563 transitions. Word has length 21 [2021-12-06 19:33:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:24,301 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 563 transitions. [2021-12-06 19:33:24,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 563 transitions. [2021-12-06 19:33:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:33:24,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:24,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:24,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:33:24,302 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1680606867, now seen corresponding path program 1 times [2021-12-06 19:33:24,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:24,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068685974] [2021-12-06 19:33:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:24,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:24,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068685974] [2021-12-06 19:33:24,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068685974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:24,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:24,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:24,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410548083] [2021-12-06 19:33:24,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:24,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:24,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:24,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:24,348 INFO L87 Difference]: Start difference. First operand 401 states and 563 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:24,376 INFO L93 Difference]: Finished difference Result 646 states and 894 transitions. [2021-12-06 19:33:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:24,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-06 19:33:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:24,379 INFO L225 Difference]: With dead ends: 646 [2021-12-06 19:33:24,379 INFO L226 Difference]: Without dead ends: 646 [2021-12-06 19:33:24,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:33:24,380 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 245 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:24,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 1239 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-12-06 19:33:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 403. [2021-12-06 19:33:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 320 states have (on average 1.671875) internal successors, (535), 386 states have internal predecessors, (535), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 565 transitions. [2021-12-06 19:33:24,388 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 565 transitions. Word has length 22 [2021-12-06 19:33:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:24,388 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 565 transitions. [2021-12-06 19:33:24,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 565 transitions. [2021-12-06 19:33:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:33:24,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:24,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:24,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:33:24,389 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -839353067, now seen corresponding path program 1 times [2021-12-06 19:33:24,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:24,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236146026] [2021-12-06 19:33:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:24,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:24,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236146026] [2021-12-06 19:33:24,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236146026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:24,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:24,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:24,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274993755] [2021-12-06 19:33:24,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:24,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:24,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:24,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:24,437 INFO L87 Difference]: Start difference. First operand 403 states and 565 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:24,468 INFO L93 Difference]: Finished difference Result 642 states and 886 transitions. [2021-12-06 19:33:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:24,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-06 19:33:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:24,472 INFO L225 Difference]: With dead ends: 642 [2021-12-06 19:33:24,472 INFO L226 Difference]: Without dead ends: 642 [2021-12-06 19:33:24,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:33:24,473 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 242 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:24,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 1255 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-12-06 19:33:24,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 401. [2021-12-06 19:33:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 318 states have (on average 1.6635220125786163) internal successors, (529), 384 states have internal predecessors, (529), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 559 transitions. [2021-12-06 19:33:24,485 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 559 transitions. Word has length 22 [2021-12-06 19:33:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:24,485 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 559 transitions. [2021-12-06 19:33:24,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,486 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 559 transitions. [2021-12-06 19:33:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:33:24,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:24,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:24,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:33:24,486 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:24,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:24,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1175048242, now seen corresponding path program 1 times [2021-12-06 19:33:24,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:24,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901179555] [2021-12-06 19:33:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:24,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:24,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:24,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901179555] [2021-12-06 19:33:24,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901179555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:24,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:24,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:33:24,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160546614] [2021-12-06 19:33:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:24,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:33:24,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:33:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:33:24,576 INFO L87 Difference]: Start difference. First operand 401 states and 559 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:24,783 INFO L93 Difference]: Finished difference Result 578 states and 779 transitions. [2021-12-06 19:33:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:33:24,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-06 19:33:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:24,786 INFO L225 Difference]: With dead ends: 578 [2021-12-06 19:33:24,786 INFO L226 Difference]: Without dead ends: 578 [2021-12-06 19:33:24,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:33:24,787 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 191 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:24,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 1270 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-12-06 19:33:24,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 411. [2021-12-06 19:33:24,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 328 states have (on average 1.649390243902439) internal successors, (541), 392 states have internal predecessors, (541), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 571 transitions. [2021-12-06 19:33:24,795 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 571 transitions. Word has length 22 [2021-12-06 19:33:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:24,795 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 571 transitions. [2021-12-06 19:33:24,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,795 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 571 transitions. [2021-12-06 19:33:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 19:33:24,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:24,796 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:24,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:33:24,796 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash -796222002, now seen corresponding path program 1 times [2021-12-06 19:33:24,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:24,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45081545] [2021-12-06 19:33:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:24,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:24,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:24,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45081545] [2021-12-06 19:33:24,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45081545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:24,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:24,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:33:24,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526280346] [2021-12-06 19:33:24,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:24,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:24,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:24,827 INFO L87 Difference]: Start difference. First operand 411 states and 571 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:24,987 INFO L93 Difference]: Finished difference Result 654 states and 844 transitions. [2021-12-06 19:33:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:24,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-06 19:33:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:24,990 INFO L225 Difference]: With dead ends: 654 [2021-12-06 19:33:24,990 INFO L226 Difference]: Without dead ends: 654 [2021-12-06 19:33:24,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:24,991 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 303 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:24,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 442 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-12-06 19:33:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 439. [2021-12-06 19:33:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 356 states have (on average 1.6657303370786516) internal successors, (593), 420 states have internal predecessors, (593), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 623 transitions. [2021-12-06 19:33:25,000 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 623 transitions. Word has length 23 [2021-12-06 19:33:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 623 transitions. [2021-12-06 19:33:25,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 623 transitions. [2021-12-06 19:33:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 19:33:25,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:25,001 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:25,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:33:25,001 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash -796222001, now seen corresponding path program 1 times [2021-12-06 19:33:25,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:25,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870775755] [2021-12-06 19:33:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:25,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:25,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:25,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870775755] [2021-12-06 19:33:25,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870775755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:25,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:25,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:25,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518531631] [2021-12-06 19:33:25,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:25,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:25,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:25,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:25,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:25,098 INFO L87 Difference]: Start difference. First operand 439 states and 623 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:25,273 INFO L93 Difference]: Finished difference Result 491 states and 648 transitions. [2021-12-06 19:33:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-06 19:33:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:25,275 INFO L225 Difference]: With dead ends: 491 [2021-12-06 19:33:25,275 INFO L226 Difference]: Without dead ends: 491 [2021-12-06 19:33:25,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:25,276 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 366 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:25,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 543 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-06 19:33:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 439. [2021-12-06 19:33:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 356 states have (on average 1.6404494382022472) internal successors, (584), 420 states have internal predecessors, (584), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 614 transitions. [2021-12-06 19:33:25,284 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 614 transitions. Word has length 23 [2021-12-06 19:33:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:25,284 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 614 transitions. [2021-12-06 19:33:25,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 614 transitions. [2021-12-06 19:33:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:33:25,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:25,285 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:25,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:33:25,285 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1911985061, now seen corresponding path program 1 times [2021-12-06 19:33:25,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:25,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131716914] [2021-12-06 19:33:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:25,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:25,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:25,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131716914] [2021-12-06 19:33:25,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131716914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:25,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:25,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:33:25,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512586614] [2021-12-06 19:33:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:25,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:25,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:25,307 INFO L87 Difference]: Start difference. First operand 439 states and 614 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:25,320 INFO L93 Difference]: Finished difference Result 451 states and 626 transitions. [2021-12-06 19:33:25,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:33:25,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-06 19:33:25,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:25,323 INFO L225 Difference]: With dead ends: 451 [2021-12-06 19:33:25,323 INFO L226 Difference]: Without dead ends: 451 [2021-12-06 19:33:25,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:25,324 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:25,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 541 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-06 19:33:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 448. [2021-12-06 19:33:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 365 states have (on average 1.6246575342465754) internal successors, (593), 429 states have internal predecessors, (593), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 623 transitions. [2021-12-06 19:33:25,331 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 623 transitions. Word has length 25 [2021-12-06 19:33:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:25,331 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 623 transitions. [2021-12-06 19:33:25,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 623 transitions. [2021-12-06 19:33:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:33:25,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:25,332 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:25,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:33:25,332 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:25,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1913832103, now seen corresponding path program 1 times [2021-12-06 19:33:25,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:25,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995983190] [2021-12-06 19:33:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:25,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:25,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:25,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995983190] [2021-12-06 19:33:25,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995983190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:25,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:25,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:33:25,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203007890] [2021-12-06 19:33:25,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:25,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:25,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:25,376 INFO L87 Difference]: Start difference. First operand 448 states and 623 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:25,515 INFO L93 Difference]: Finished difference Result 756 states and 1001 transitions. [2021-12-06 19:33:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-06 19:33:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:25,518 INFO L225 Difference]: With dead ends: 756 [2021-12-06 19:33:25,518 INFO L226 Difference]: Without dead ends: 756 [2021-12-06 19:33:25,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:25,519 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 339 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:25,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 477 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-12-06 19:33:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 507. [2021-12-06 19:33:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 425 states have (on average 1.6) internal successors, (680), 488 states have internal predecessors, (680), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 710 transitions. [2021-12-06 19:33:25,528 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 710 transitions. Word has length 25 [2021-12-06 19:33:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:25,528 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 710 transitions. [2021-12-06 19:33:25,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 710 transitions. [2021-12-06 19:33:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:33:25,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:25,529 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:25,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 19:33:25,529 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1913832102, now seen corresponding path program 1 times [2021-12-06 19:33:25,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:25,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210244042] [2021-12-06 19:33:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:25,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:25,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:25,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210244042] [2021-12-06 19:33:25,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210244042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:25,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:25,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:33:25,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719437008] [2021-12-06 19:33:25,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:25,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:33:25,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:25,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:33:25,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:33:25,548 INFO L87 Difference]: Start difference. First operand 507 states and 710 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:25,609 INFO L93 Difference]: Finished difference Result 594 states and 801 transitions. [2021-12-06 19:33:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:33:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-06 19:33:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:25,611 INFO L225 Difference]: With dead ends: 594 [2021-12-06 19:33:25,611 INFO L226 Difference]: Without dead ends: 594 [2021-12-06 19:33:25,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:33:25,612 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 148 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:25,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 272 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-12-06 19:33:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 504. [2021-12-06 19:33:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 425 states have (on average 1.571764705882353) internal successors, (668), 485 states have internal predecessors, (668), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 698 transitions. [2021-12-06 19:33:25,620 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 698 transitions. Word has length 25 [2021-12-06 19:33:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:25,620 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 698 transitions. [2021-12-06 19:33:25,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 698 transitions. [2021-12-06 19:33:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 19:33:25,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:25,621 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:25,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:33:25,621 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:25,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2102112361, now seen corresponding path program 1 times [2021-12-06 19:33:25,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:25,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336234798] [2021-12-06 19:33:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:25,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:25,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:25,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336234798] [2021-12-06 19:33:25,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336234798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:25,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:25,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:33:25,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752811980] [2021-12-06 19:33:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:25,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:25,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:25,655 INFO L87 Difference]: Start difference. First operand 504 states and 698 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:25,787 INFO L93 Difference]: Finished difference Result 810 states and 1070 transitions. [2021-12-06 19:33:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-06 19:33:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:25,790 INFO L225 Difference]: With dead ends: 810 [2021-12-06 19:33:25,790 INFO L226 Difference]: Without dead ends: 810 [2021-12-06 19:33:25,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:25,791 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 326 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:25,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 515 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-12-06 19:33:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 504. [2021-12-06 19:33:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 425 states have (on average 1.571764705882353) internal successors, (668), 485 states have internal predecessors, (668), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 698 transitions. [2021-12-06 19:33:25,800 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 698 transitions. Word has length 26 [2021-12-06 19:33:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:25,800 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 698 transitions. [2021-12-06 19:33:25,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 698 transitions. [2021-12-06 19:33:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 19:33:25,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:25,800 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:25,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:33:25,801 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1491790357, now seen corresponding path program 1 times [2021-12-06 19:33:25,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:25,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069758617] [2021-12-06 19:33:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:25,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:25,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069758617] [2021-12-06 19:33:25,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069758617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:25,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:25,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:25,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131109853] [2021-12-06 19:33:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:25,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:25,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:25,844 INFO L87 Difference]: Start difference. First operand 504 states and 698 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:25,873 INFO L93 Difference]: Finished difference Result 708 states and 959 transitions. [2021-12-06 19:33:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:25,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-06 19:33:25,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:25,877 INFO L225 Difference]: With dead ends: 708 [2021-12-06 19:33:25,877 INFO L226 Difference]: Without dead ends: 708 [2021-12-06 19:33:25,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:33:25,877 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 233 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:25,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1515 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-12-06 19:33:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 443. [2021-12-06 19:33:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 365 states have (on average 1.5726027397260274) internal successors, (574), 424 states have internal predecessors, (574), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 604 transitions. [2021-12-06 19:33:25,886 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 604 transitions. Word has length 26 [2021-12-06 19:33:25,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:25,886 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 604 transitions. [2021-12-06 19:33:25,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 604 transitions. [2021-12-06 19:33:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 19:33:25,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:25,886 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:25,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 19:33:25,887 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash 731575509, now seen corresponding path program 1 times [2021-12-06 19:33:25,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:25,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003589603] [2021-12-06 19:33:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:25,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:25,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003589603] [2021-12-06 19:33:25,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003589603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:25,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:25,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:33:25,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951226366] [2021-12-06 19:33:25,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:25,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:33:25,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:33:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:25,940 INFO L87 Difference]: Start difference. First operand 443 states and 604 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:26,043 INFO L93 Difference]: Finished difference Result 517 states and 672 transitions. [2021-12-06 19:33:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:26,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-06 19:33:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:26,045 INFO L225 Difference]: With dead ends: 517 [2021-12-06 19:33:26,045 INFO L226 Difference]: Without dead ends: 517 [2021-12-06 19:33:26,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:26,046 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 167 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:26,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 660 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-12-06 19:33:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 443. [2021-12-06 19:33:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 365 states have (on average 1.5698630136986302) internal successors, (573), 424 states have internal predecessors, (573), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 603 transitions. [2021-12-06 19:33:26,054 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 603 transitions. Word has length 27 [2021-12-06 19:33:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:26,054 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 603 transitions. [2021-12-06 19:33:26,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 603 transitions. [2021-12-06 19:33:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 19:33:26,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:26,055 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:26,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 19:33:26,055 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash 946649543, now seen corresponding path program 1 times [2021-12-06 19:33:26,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:26,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846074551] [2021-12-06 19:33:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:26,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:26,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:26,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846074551] [2021-12-06 19:33:26,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846074551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:26,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:26,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:33:26,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724677758] [2021-12-06 19:33:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:26,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:33:26,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:33:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:26,112 INFO L87 Difference]: Start difference. First operand 443 states and 603 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:26,248 INFO L93 Difference]: Finished difference Result 645 states and 864 transitions. [2021-12-06 19:33:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:33:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-06 19:33:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:26,251 INFO L225 Difference]: With dead ends: 645 [2021-12-06 19:33:26,251 INFO L226 Difference]: Without dead ends: 645 [2021-12-06 19:33:26,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:33:26,252 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 158 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:26,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1264 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-06 19:33:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 473. [2021-12-06 19:33:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 395 states have (on average 1.539240506329114) internal successors, (608), 454 states have internal predecessors, (608), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 638 transitions. [2021-12-06 19:33:26,263 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 638 transitions. Word has length 27 [2021-12-06 19:33:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:26,264 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 638 transitions. [2021-12-06 19:33:26,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,264 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 638 transitions. [2021-12-06 19:33:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 19:33:26,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:26,264 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:26,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 19:33:26,265 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash 946649737, now seen corresponding path program 1 times [2021-12-06 19:33:26,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:26,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720298730] [2021-12-06 19:33:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:26,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:26,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:26,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720298730] [2021-12-06 19:33:26,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720298730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:26,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:26,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:33:26,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170972419] [2021-12-06 19:33:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:26,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:26,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:26,307 INFO L87 Difference]: Start difference. First operand 473 states and 638 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:26,433 INFO L93 Difference]: Finished difference Result 808 states and 1039 transitions. [2021-12-06 19:33:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-06 19:33:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:26,436 INFO L225 Difference]: With dead ends: 808 [2021-12-06 19:33:26,437 INFO L226 Difference]: Without dead ends: 808 [2021-12-06 19:33:26,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:26,437 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 330 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:26,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 524 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-12-06 19:33:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 563. [2021-12-06 19:33:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 485 states have (on average 1.5175257731958762) internal successors, (736), 544 states have internal predecessors, (736), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-06 19:33:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 766 transitions. [2021-12-06 19:33:26,446 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 766 transitions. Word has length 27 [2021-12-06 19:33:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:26,446 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 766 transitions. [2021-12-06 19:33:26,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 766 transitions. [2021-12-06 19:33:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 19:33:26,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:26,447 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:26,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 19:33:26,447 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:26,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1204004541, now seen corresponding path program 1 times [2021-12-06 19:33:26,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:26,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090185829] [2021-12-06 19:33:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:26,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:26,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:26,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090185829] [2021-12-06 19:33:26,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090185829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:26,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:26,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:33:26,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310405471] [2021-12-06 19:33:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:26,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:33:26,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:33:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:26,510 INFO L87 Difference]: Start difference. First operand 563 states and 766 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:26,639 INFO L93 Difference]: Finished difference Result 758 states and 993 transitions. [2021-12-06 19:33:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:33:26,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-06 19:33:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:26,642 INFO L225 Difference]: With dead ends: 758 [2021-12-06 19:33:26,642 INFO L226 Difference]: Without dead ends: 758 [2021-12-06 19:33:26,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:26,643 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 218 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:26,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 665 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-12-06 19:33:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 601. [2021-12-06 19:33:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 519 states have (on average 1.5144508670520231) internal successors, (786), 580 states have internal predecessors, (786), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-06 19:33:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 822 transitions. [2021-12-06 19:33:26,654 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 822 transitions. Word has length 28 [2021-12-06 19:33:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:26,655 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 822 transitions. [2021-12-06 19:33:26,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 822 transitions. [2021-12-06 19:33:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 19:33:26,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:26,655 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:26,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 19:33:26,655 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:26,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1495351243, now seen corresponding path program 1 times [2021-12-06 19:33:26,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:26,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903989598] [2021-12-06 19:33:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:26,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:26,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:26,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903989598] [2021-12-06 19:33:26,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903989598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:26,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:26,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:33:26,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134078203] [2021-12-06 19:33:26,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:26,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:26,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:26,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:26,696 INFO L87 Difference]: Start difference. First operand 601 states and 822 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:26,819 INFO L93 Difference]: Finished difference Result 845 states and 1089 transitions. [2021-12-06 19:33:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:26,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-06 19:33:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:26,824 INFO L225 Difference]: With dead ends: 845 [2021-12-06 19:33:26,824 INFO L226 Difference]: Without dead ends: 845 [2021-12-06 19:33:26,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:26,825 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 317 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:26,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 537 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-06 19:33:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 510. [2021-12-06 19:33:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 429 states have (on average 1.5198135198135199) internal successors, (652), 489 states have internal predecessors, (652), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-06 19:33:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 688 transitions. [2021-12-06 19:33:26,834 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 688 transitions. Word has length 28 [2021-12-06 19:33:26,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:26,834 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 688 transitions. [2021-12-06 19:33:26,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 688 transitions. [2021-12-06 19:33:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 19:33:26,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:26,834 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:26,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 19:33:26,835 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1910467130, now seen corresponding path program 1 times [2021-12-06 19:33:26,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:26,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128595111] [2021-12-06 19:33:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:26,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:26,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:26,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128595111] [2021-12-06 19:33:26,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128595111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:26,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:26,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:26,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129612362] [2021-12-06 19:33:26,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:26,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:33:26,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:26,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:33:26,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:26,900 INFO L87 Difference]: Start difference. First operand 510 states and 688 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:27,101 INFO L93 Difference]: Finished difference Result 1252 states and 1682 transitions. [2021-12-06 19:33:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:33:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-06 19:33:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:27,106 INFO L225 Difference]: With dead ends: 1252 [2021-12-06 19:33:27,106 INFO L226 Difference]: Without dead ends: 1252 [2021-12-06 19:33:27,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:27,107 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 540 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:27,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1630 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-12-06 19:33:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 644. [2021-12-06 19:33:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 563 states have (on average 1.5204262877442274) internal successors, (856), 617 states have internal predecessors, (856), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-06 19:33:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 892 transitions. [2021-12-06 19:33:27,122 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 892 transitions. Word has length 30 [2021-12-06 19:33:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:27,122 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 892 transitions. [2021-12-06 19:33:27,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 892 transitions. [2021-12-06 19:33:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 19:33:27,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:27,123 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:27,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 19:33:27,123 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:27,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1702169087, now seen corresponding path program 1 times [2021-12-06 19:33:27,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:27,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613871549] [2021-12-06 19:33:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:27,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:27,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:27,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613871549] [2021-12-06 19:33:27,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613871549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:27,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:27,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:27,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875361847] [2021-12-06 19:33:27,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:27,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:27,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:27,195 INFO L87 Difference]: Start difference. First operand 644 states and 892 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:27,529 INFO L93 Difference]: Finished difference Result 1137 states and 1525 transitions. [2021-12-06 19:33:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-06 19:33:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:27,534 INFO L225 Difference]: With dead ends: 1137 [2021-12-06 19:33:27,534 INFO L226 Difference]: Without dead ends: 1137 [2021-12-06 19:33:27,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:33:27,534 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 470 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:27,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1053 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:33:27,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-12-06 19:33:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 687. [2021-12-06 19:33:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 602 states have (on average 1.5016611295681064) internal successors, (904), 657 states have internal predecessors, (904), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 946 transitions. [2021-12-06 19:33:27,544 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 946 transitions. Word has length 30 [2021-12-06 19:33:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:27,544 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 946 transitions. [2021-12-06 19:33:27,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 946 transitions. [2021-12-06 19:33:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 19:33:27,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:27,545 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:27,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 19:33:27,545 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1975675941, now seen corresponding path program 1 times [2021-12-06 19:33:27,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:27,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399705881] [2021-12-06 19:33:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:27,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:27,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399705881] [2021-12-06 19:33:27,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399705881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:27,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:27,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:27,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697069203] [2021-12-06 19:33:27,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:27,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:33:27,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:33:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:27,585 INFO L87 Difference]: Start difference. First operand 687 states and 946 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:27,609 INFO L93 Difference]: Finished difference Result 1055 states and 1417 transitions. [2021-12-06 19:33:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:27,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-06 19:33:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:27,613 INFO L225 Difference]: With dead ends: 1055 [2021-12-06 19:33:27,613 INFO L226 Difference]: Without dead ends: 1055 [2021-12-06 19:33:27,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:27,614 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 226 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:27,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1134 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:27,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-12-06 19:33:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 679. [2021-12-06 19:33:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 594 states have (on average 1.5016835016835017) internal successors, (892), 649 states have internal predecessors, (892), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 934 transitions. [2021-12-06 19:33:27,624 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 934 transitions. Word has length 30 [2021-12-06 19:33:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:27,624 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 934 transitions. [2021-12-06 19:33:27,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 934 transitions. [2021-12-06 19:33:27,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 19:33:27,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:27,625 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:27,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 19:33:27,625 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1977522983, now seen corresponding path program 1 times [2021-12-06 19:33:27,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:27,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708295236] [2021-12-06 19:33:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:27,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:27,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:27,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708295236] [2021-12-06 19:33:27,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708295236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:27,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:27,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:27,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255391404] [2021-12-06 19:33:27,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:27,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:33:27,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:33:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:27,688 INFO L87 Difference]: Start difference. First operand 679 states and 934 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:27,880 INFO L93 Difference]: Finished difference Result 1259 states and 1668 transitions. [2021-12-06 19:33:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:33:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-06 19:33:27,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:27,885 INFO L225 Difference]: With dead ends: 1259 [2021-12-06 19:33:27,885 INFO L226 Difference]: Without dead ends: 1259 [2021-12-06 19:33:27,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:27,886 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 502 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:27,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 1806 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-12-06 19:33:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 646. [2021-12-06 19:33:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 564 states have (on average 1.4663120567375887) internal successors, (827), 616 states have internal predecessors, (827), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 869 transitions. [2021-12-06 19:33:27,898 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 869 transitions. Word has length 30 [2021-12-06 19:33:27,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:27,898 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 869 transitions. [2021-12-06 19:33:27,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:27,898 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 869 transitions. [2021-12-06 19:33:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 19:33:27,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:27,899 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:27,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 19:33:27,899 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1227634393, now seen corresponding path program 1 times [2021-12-06 19:33:27,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:27,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608147986] [2021-12-06 19:33:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:27,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:27,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:27,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608147986] [2021-12-06 19:33:27,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608147986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:27,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:27,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:27,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017902646] [2021-12-06 19:33:27,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:27,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:33:27,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:33:27,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:33:27,985 INFO L87 Difference]: Start difference. First operand 646 states and 869 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:28,260 INFO L93 Difference]: Finished difference Result 925 states and 1194 transitions. [2021-12-06 19:33:28,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:33:28,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-06 19:33:28,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:28,264 INFO L225 Difference]: With dead ends: 925 [2021-12-06 19:33:28,264 INFO L226 Difference]: Without dead ends: 925 [2021-12-06 19:33:28,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:33:28,265 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 479 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:28,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 816 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-12-06 19:33:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 646. [2021-12-06 19:33:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 564 states have (on average 1.4592198581560283) internal successors, (823), 616 states have internal predecessors, (823), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 865 transitions. [2021-12-06 19:33:28,277 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 865 transitions. Word has length 31 [2021-12-06 19:33:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:28,277 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 865 transitions. [2021-12-06 19:33:28,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 865 transitions. [2021-12-06 19:33:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 19:33:28,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:28,278 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:28,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 19:33:28,278 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2007870586, now seen corresponding path program 1 times [2021-12-06 19:33:28,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:28,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110719218] [2021-12-06 19:33:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:28,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:28,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:28,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110719218] [2021-12-06 19:33:28,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110719218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:28,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:28,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:33:28,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575550209] [2021-12-06 19:33:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:28,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:28,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:28,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:28,385 INFO L87 Difference]: Start difference. First operand 646 states and 865 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:28,519 INFO L93 Difference]: Finished difference Result 695 states and 913 transitions. [2021-12-06 19:33:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:28,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-06 19:33:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:28,522 INFO L225 Difference]: With dead ends: 695 [2021-12-06 19:33:28,522 INFO L226 Difference]: Without dead ends: 695 [2021-12-06 19:33:28,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:28,523 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 110 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:28,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 835 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-12-06 19:33:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 625. [2021-12-06 19:33:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 543 states have (on average 1.4659300184162063) internal successors, (796), 597 states have internal predecessors, (796), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 838 transitions. [2021-12-06 19:33:28,530 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 838 transitions. Word has length 32 [2021-12-06 19:33:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:28,530 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 838 transitions. [2021-12-06 19:33:28,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 838 transitions. [2021-12-06 19:33:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 19:33:28,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:28,531 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:28,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 19:33:28,531 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1362637237, now seen corresponding path program 1 times [2021-12-06 19:33:28,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:28,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505090346] [2021-12-06 19:33:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:28,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:28,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:28,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505090346] [2021-12-06 19:33:28,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505090346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:28,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:28,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:28,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174335376] [2021-12-06 19:33:28,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:28,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:28,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:28,562 INFO L87 Difference]: Start difference. First operand 625 states and 838 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:28,681 INFO L93 Difference]: Finished difference Result 729 states and 966 transitions. [2021-12-06 19:33:28,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:28,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-06 19:33:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:28,684 INFO L225 Difference]: With dead ends: 729 [2021-12-06 19:33:28,684 INFO L226 Difference]: Without dead ends: 729 [2021-12-06 19:33:28,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:28,684 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 468 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:28,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 565 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-06 19:33:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 624. [2021-12-06 19:33:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 543 states have (on average 1.4622467771639043) internal successors, (794), 596 states have internal predecessors, (794), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 836 transitions. [2021-12-06 19:33:28,692 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 836 transitions. Word has length 35 [2021-12-06 19:33:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:28,692 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 836 transitions. [2021-12-06 19:33:28,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 836 transitions. [2021-12-06 19:33:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 19:33:28,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:28,693 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:28,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 19:33:28,693 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:28,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1362637238, now seen corresponding path program 1 times [2021-12-06 19:33:28,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:28,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113774956] [2021-12-06 19:33:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:28,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:28,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:28,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113774956] [2021-12-06 19:33:28,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113774956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:28,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:28,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:28,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905019302] [2021-12-06 19:33:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:28,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:28,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:28,753 INFO L87 Difference]: Start difference. First operand 624 states and 836 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:28,860 INFO L93 Difference]: Finished difference Result 661 states and 851 transitions. [2021-12-06 19:33:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:28,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-06 19:33:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:28,863 INFO L225 Difference]: With dead ends: 661 [2021-12-06 19:33:28,863 INFO L226 Difference]: Without dead ends: 661 [2021-12-06 19:33:28,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:28,863 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 496 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:28,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 618 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-06 19:33:28,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 623. [2021-12-06 19:33:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 543 states have (on average 1.4585635359116023) internal successors, (792), 595 states have internal predecessors, (792), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 834 transitions. [2021-12-06 19:33:28,873 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 834 transitions. Word has length 35 [2021-12-06 19:33:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:28,873 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 834 transitions. [2021-12-06 19:33:28,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 834 transitions. [2021-12-06 19:33:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 19:33:28,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:28,874 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:28,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 19:33:28,874 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:28,875 INFO L85 PathProgramCache]: Analyzing trace with hash -470637162, now seen corresponding path program 1 times [2021-12-06 19:33:28,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:28,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454915998] [2021-12-06 19:33:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:28,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:28,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:28,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454915998] [2021-12-06 19:33:28,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454915998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:28,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:28,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:33:28,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120292746] [2021-12-06 19:33:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:28,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:33:28,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:33:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:28,915 INFO L87 Difference]: Start difference. First operand 623 states and 834 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:29,050 INFO L93 Difference]: Finished difference Result 1070 states and 1398 transitions. [2021-12-06 19:33:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:33:29,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-06 19:33:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:29,053 INFO L225 Difference]: With dead ends: 1070 [2021-12-06 19:33:29,053 INFO L226 Difference]: Without dead ends: 1070 [2021-12-06 19:33:29,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:29,054 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 619 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:29,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 513 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-12-06 19:33:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 620. [2021-12-06 19:33:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 543 states have (on average 1.4475138121546962) internal successors, (786), 592 states have internal predecessors, (786), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 828 transitions. [2021-12-06 19:33:29,066 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 828 transitions. Word has length 37 [2021-12-06 19:33:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:29,067 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 828 transitions. [2021-12-06 19:33:29,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 828 transitions. [2021-12-06 19:33:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 19:33:29,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:29,067 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:29,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 19:33:29,067 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:29,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -470637161, now seen corresponding path program 1 times [2021-12-06 19:33:29,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:29,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103030318] [2021-12-06 19:33:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:29,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:29,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:29,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103030318] [2021-12-06 19:33:29,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103030318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:29,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:29,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:29,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767823249] [2021-12-06 19:33:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:29,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:29,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:29,142 INFO L87 Difference]: Start difference. First operand 620 states and 828 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:29,306 INFO L93 Difference]: Finished difference Result 896 states and 1151 transitions. [2021-12-06 19:33:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:29,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-06 19:33:29,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:29,308 INFO L225 Difference]: With dead ends: 896 [2021-12-06 19:33:29,308 INFO L226 Difference]: Without dead ends: 896 [2021-12-06 19:33:29,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:29,308 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 715 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:29,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 641 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:29,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-12-06 19:33:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 619. [2021-12-06 19:33:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 543 states have (on average 1.4438305709023942) internal successors, (784), 591 states have internal predecessors, (784), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 826 transitions. [2021-12-06 19:33:29,321 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 826 transitions. Word has length 37 [2021-12-06 19:33:29,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:29,321 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 826 transitions. [2021-12-06 19:33:29,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 826 transitions. [2021-12-06 19:33:29,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 19:33:29,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:29,322 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:33:29,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 19:33:29,322 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -470637000, now seen corresponding path program 1 times [2021-12-06 19:33:29,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:29,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203154920] [2021-12-06 19:33:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:29,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:29,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:29,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203154920] [2021-12-06 19:33:29,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203154920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:29,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:29,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:33:29,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280827462] [2021-12-06 19:33:29,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:29,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:33:29,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:33:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:33:29,389 INFO L87 Difference]: Start difference. First operand 619 states and 826 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:29,586 INFO L93 Difference]: Finished difference Result 787 states and 995 transitions. [2021-12-06 19:33:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:33:29,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-06 19:33:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:29,588 INFO L225 Difference]: With dead ends: 787 [2021-12-06 19:33:29,588 INFO L226 Difference]: Without dead ends: 787 [2021-12-06 19:33:29,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:29,589 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 375 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:29,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 551 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-12-06 19:33:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 619. [2021-12-06 19:33:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 543 states have (on average 1.4401473296500922) internal successors, (782), 591 states have internal predecessors, (782), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 824 transitions. [2021-12-06 19:33:29,601 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 824 transitions. Word has length 37 [2021-12-06 19:33:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:29,601 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 824 transitions. [2021-12-06 19:33:29,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:29,602 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 824 transitions. [2021-12-06 19:33:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 19:33:29,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:29,602 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:29,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-06 19:33:29,603 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1641938402, now seen corresponding path program 1 times [2021-12-06 19:33:29,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:29,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525848607] [2021-12-06 19:33:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:29,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 19:33:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:33:29,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:29,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525848607] [2021-12-06 19:33:29,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525848607] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:29,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622449986] [2021-12-06 19:33:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:29,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:29,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:29,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:33:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:29,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 19:33:29,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:29,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:29,930 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:33:29,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2021-12-06 19:33:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:33:29,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622449986] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:33:29,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:33:29,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-06 19:33:29,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009586125] [2021-12-06 19:33:29,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:29,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:33:29,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:33:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:29,984 INFO L87 Difference]: Start difference. First operand 619 states and 824 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:33:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:30,514 INFO L93 Difference]: Finished difference Result 1838 states and 2259 transitions. [2021-12-06 19:33:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:33:30,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2021-12-06 19:33:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:30,517 INFO L225 Difference]: With dead ends: 1838 [2021-12-06 19:33:30,517 INFO L226 Difference]: Without dead ends: 1838 [2021-12-06 19:33:30,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:33:30,518 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 2609 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:30,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2611 Valid, 1384 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:33:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2021-12-06 19:33:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 735. [2021-12-06 19:33:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 653 states have (on average 1.3705972434915774) internal successors, (895), 696 states have internal predecessors, (895), 20 states have call successors, (20), 10 states have call predecessors, (20), 20 states have return successors, (40), 28 states have call predecessors, (40), 20 states have call successors, (40) [2021-12-06 19:33:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 955 transitions. [2021-12-06 19:33:30,532 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 955 transitions. Word has length 43 [2021-12-06 19:33:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:30,532 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 955 transitions. [2021-12-06 19:33:30,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:33:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 955 transitions. [2021-12-06 19:33:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 19:33:30,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:30,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:30,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:33:30,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:30,735 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:30,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash -974885366, now seen corresponding path program 1 times [2021-12-06 19:33:30,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:30,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126303568] [2021-12-06 19:33:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:30,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:30,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:30,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:30,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126303568] [2021-12-06 19:33:30,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126303568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:30,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:30,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:33:30,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925919837] [2021-12-06 19:33:30,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:30,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:33:30,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:33:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:30,859 INFO L87 Difference]: Start difference. First operand 735 states and 955 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:30,885 INFO L93 Difference]: Finished difference Result 868 states and 1111 transitions. [2021-12-06 19:33:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:33:30,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-06 19:33:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:30,887 INFO L225 Difference]: With dead ends: 868 [2021-12-06 19:33:30,887 INFO L226 Difference]: Without dead ends: 868 [2021-12-06 19:33:30,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:33:30,888 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 152 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:30,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 582 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-12-06 19:33:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 691. [2021-12-06 19:33:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 613 states have (on average 1.3800978792822185) internal successors, (846), 656 states have internal predecessors, (846), 18 states have call successors, (18), 9 states have call predecessors, (18), 18 states have return successors, (36), 25 states have call predecessors, (36), 18 states have call successors, (36) [2021-12-06 19:33:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 900 transitions. [2021-12-06 19:33:30,906 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 900 transitions. Word has length 45 [2021-12-06 19:33:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:30,906 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 900 transitions. [2021-12-06 19:33:30,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 900 transitions. [2021-12-06 19:33:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 19:33:30,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:30,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:30,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-06 19:33:30,907 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1845991888, now seen corresponding path program 1 times [2021-12-06 19:33:30,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:30,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105581117] [2021-12-06 19:33:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:30,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:30,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:30,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105581117] [2021-12-06 19:33:30,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105581117] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:30,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90458101] [2021-12-06 19:33:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:30,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:30,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:30,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:30,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:33:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:31,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 19:33:31,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:31,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:33:31,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:33:31,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:31,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 19:33:31,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:31,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 19:33:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:31,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:31,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2021-12-06 19:33:31,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:31,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:31,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90458101] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:33:31,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:33:31,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 18 [2021-12-06 19:33:31,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127507726] [2021-12-06 19:33:31,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:31,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 19:33:31,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:31,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 19:33:31,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:33:31,540 INFO L87 Difference]: Start difference. First operand 691 states and 900 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:32,157 INFO L93 Difference]: Finished difference Result 1324 states and 1683 transitions. [2021-12-06 19:33:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:33:32,157 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-06 19:33:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:32,159 INFO L225 Difference]: With dead ends: 1324 [2021-12-06 19:33:32,159 INFO L226 Difference]: Without dead ends: 1324 [2021-12-06 19:33:32,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-12-06 19:33:32,160 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1229 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:32,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 2793 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:33:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-12-06 19:33:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 818. [2021-12-06 19:33:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 728 states have (on average 1.3873626373626373) internal successors, (1010), 774 states have internal predecessors, (1010), 24 states have call successors, (24), 12 states have call predecessors, (24), 24 states have return successors, (48), 31 states have call predecessors, (48), 24 states have call successors, (48) [2021-12-06 19:33:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1082 transitions. [2021-12-06 19:33:32,173 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1082 transitions. Word has length 45 [2021-12-06 19:33:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:32,173 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1082 transitions. [2021-12-06 19:33:32,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1082 transitions. [2021-12-06 19:33:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 19:33:32,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:32,174 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:32,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:33:32,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:32,374 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:32,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2034532892, now seen corresponding path program 1 times [2021-12-06 19:33:32,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:32,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887454016] [2021-12-06 19:33:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:32,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:33:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:32,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:32,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887454016] [2021-12-06 19:33:32,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887454016] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:32,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236506001] [2021-12-06 19:33:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:32,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:32,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:32,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:32,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:33:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:32,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 19:33:32,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:32,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:32,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 19:33:32,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:32,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 19:33:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 19:33:32,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:33:32,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236506001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:32,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:33:32,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2021-12-06 19:33:32,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287753321] [2021-12-06 19:33:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:32,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:33:32,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:33:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:32,671 INFO L87 Difference]: Start difference. First operand 818 states and 1082 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:32,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:32,894 INFO L93 Difference]: Finished difference Result 686 states and 878 transitions. [2021-12-06 19:33:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:33:32,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-06 19:33:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:32,895 INFO L225 Difference]: With dead ends: 686 [2021-12-06 19:33:32,895 INFO L226 Difference]: Without dead ends: 686 [2021-12-06 19:33:32,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:33:32,896 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 286 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:32,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1441 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:32,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-06 19:33:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 519. [2021-12-06 19:33:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 453 states have (on average 1.4172185430463575) internal successors, (642), 493 states have internal predecessors, (642), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 19 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-06 19:33:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 678 transitions. [2021-12-06 19:33:32,903 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 678 transitions. Word has length 46 [2021-12-06 19:33:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:32,903 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 678 transitions. [2021-12-06 19:33:32,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 678 transitions. [2021-12-06 19:33:32,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 19:33:32,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:32,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:32,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:33:33,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-06 19:33:33,104 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash -102248492, now seen corresponding path program 1 times [2021-12-06 19:33:33,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:33,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029719261] [2021-12-06 19:33:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:33,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:33,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029719261] [2021-12-06 19:33:33,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029719261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:33,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:33,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:33:33,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360576930] [2021-12-06 19:33:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:33,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:33:33,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:33:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:33:33,259 INFO L87 Difference]: Start difference. First operand 519 states and 678 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:33,591 INFO L93 Difference]: Finished difference Result 986 states and 1298 transitions. [2021-12-06 19:33:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:33:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 19:33:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:33,593 INFO L225 Difference]: With dead ends: 986 [2021-12-06 19:33:33,593 INFO L226 Difference]: Without dead ends: 986 [2021-12-06 19:33:33,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:33:33,594 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 954 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:33,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 695 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-12-06 19:33:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 520. [2021-12-06 19:33:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 455 states have (on average 1.408791208791209) internal successors, (641), 494 states have internal predecessors, (641), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 19 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-06 19:33:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 677 transitions. [2021-12-06 19:33:33,601 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 677 transitions. Word has length 48 [2021-12-06 19:33:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:33,601 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 677 transitions. [2021-12-06 19:33:33,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 677 transitions. [2021-12-06 19:33:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 19:33:33,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:33,601 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:33,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-06 19:33:33,602 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash -102248430, now seen corresponding path program 1 times [2021-12-06 19:33:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:33,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709281420] [2021-12-06 19:33:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:33,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:33,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:33,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709281420] [2021-12-06 19:33:33,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709281420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:33,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:33,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:33,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453468760] [2021-12-06 19:33:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:33,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:33,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:33,670 INFO L87 Difference]: Start difference. First operand 520 states and 677 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:33,782 INFO L93 Difference]: Finished difference Result 535 states and 690 transitions. [2021-12-06 19:33:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:33:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 19:33:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:33,783 INFO L225 Difference]: With dead ends: 535 [2021-12-06 19:33:33,783 INFO L226 Difference]: Without dead ends: 535 [2021-12-06 19:33:33,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:33:33,784 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 393 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:33,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 318 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:33,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-12-06 19:33:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 517. [2021-12-06 19:33:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 453 states have (on average 1.403973509933775) internal successors, (636), 491 states have internal predecessors, (636), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 19 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-06 19:33:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 672 transitions. [2021-12-06 19:33:33,790 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 672 transitions. Word has length 48 [2021-12-06 19:33:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:33,790 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 672 transitions. [2021-12-06 19:33:33,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 672 transitions. [2021-12-06 19:33:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 19:33:33,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:33,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:33,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-06 19:33:33,791 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:33,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:33,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1483644560, now seen corresponding path program 1 times [2021-12-06 19:33:33,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:33,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155020215] [2021-12-06 19:33:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:33,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:33:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:33:33,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:33,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155020215] [2021-12-06 19:33:33,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155020215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:33,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:33,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:33,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534185092] [2021-12-06 19:33:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:33,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:33,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:33,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:33,855 INFO L87 Difference]: Start difference. First operand 517 states and 672 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:33,980 INFO L93 Difference]: Finished difference Result 584 states and 750 transitions. [2021-12-06 19:33:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:33:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-12-06 19:33:33,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:33,981 INFO L225 Difference]: With dead ends: 584 [2021-12-06 19:33:33,981 INFO L226 Difference]: Without dead ends: 584 [2021-12-06 19:33:33,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:33,982 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 375 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:33,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 316 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:33:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-12-06 19:33:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 515. [2021-12-06 19:33:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 453 states have (on average 1.359823399558499) internal successors, (616), 489 states have internal predecessors, (616), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 19 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-06 19:33:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 652 transitions. [2021-12-06 19:33:33,988 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 652 transitions. Word has length 50 [2021-12-06 19:33:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:33,988 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 652 transitions. [2021-12-06 19:33:33,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 652 transitions. [2021-12-06 19:33:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 19:33:33,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:33,988 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:33,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-06 19:33:33,989 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:33,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash -952792567, now seen corresponding path program 1 times [2021-12-06 19:33:33,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:33,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591203864] [2021-12-06 19:33:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:33,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:34,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:34,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591203864] [2021-12-06 19:33:34,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591203864] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:34,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737409067] [2021-12-06 19:33:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:34,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:34,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:34,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:34,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:33:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:34,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 19:33:34,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:34,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:33:34,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-12-06 19:33:35,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:35,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 9 [2021-12-06 19:33:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:35,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:33:35,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737409067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:35,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:33:35,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2021-12-06 19:33:35,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776014786] [2021-12-06 19:33:35,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:35,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:33:35,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:33:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:33:35,016 INFO L87 Difference]: Start difference. First operand 515 states and 652 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:35,237 INFO L93 Difference]: Finished difference Result 664 states and 821 transitions. [2021-12-06 19:33:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:33:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-06 19:33:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:35,239 INFO L225 Difference]: With dead ends: 664 [2021-12-06 19:33:35,239 INFO L226 Difference]: Without dead ends: 664 [2021-12-06 19:33:35,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:33:35,239 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 262 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:35,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 924 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 80 Unchecked, 0.1s Time] [2021-12-06 19:33:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-12-06 19:33:35,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 585. [2021-12-06 19:33:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 520 states have (on average 1.35) internal successors, (702), 557 states have internal predecessors, (702), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-06 19:33:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 744 transitions. [2021-12-06 19:33:35,245 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 744 transitions. Word has length 51 [2021-12-06 19:33:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:35,245 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 744 transitions. [2021-12-06 19:33:35,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 744 transitions. [2021-12-06 19:33:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 19:33:35,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:35,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:35,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 19:33:35,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-06 19:33:35,447 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash -952792566, now seen corresponding path program 1 times [2021-12-06 19:33:35,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:35,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906676019] [2021-12-06 19:33:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:35,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:35,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:35,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906676019] [2021-12-06 19:33:35,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906676019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:35,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:35,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:33:35,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276775811] [2021-12-06 19:33:35,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:35,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:33:35,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:33:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:35,690 INFO L87 Difference]: Start difference. First operand 585 states and 744 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:36,468 INFO L93 Difference]: Finished difference Result 1780 states and 2277 transitions. [2021-12-06 19:33:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:33:36,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-06 19:33:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:36,471 INFO L225 Difference]: With dead ends: 1780 [2021-12-06 19:33:36,471 INFO L226 Difference]: Without dead ends: 1780 [2021-12-06 19:33:36,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:33:36,471 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 980 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:36,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 1954 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:33:36,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-12-06 19:33:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 833. [2021-12-06 19:33:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 756 states have (on average 1.3558201058201058) internal successors, (1025), 796 states have internal predecessors, (1025), 20 states have call successors, (20), 10 states have call predecessors, (20), 20 states have return successors, (40), 26 states have call predecessors, (40), 20 states have call successors, (40) [2021-12-06 19:33:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1085 transitions. [2021-12-06 19:33:36,481 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1085 transitions. Word has length 51 [2021-12-06 19:33:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:36,481 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1085 transitions. [2021-12-06 19:33:36,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1085 transitions. [2021-12-06 19:33:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 19:33:36,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:36,482 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:36,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-06 19:33:36,482 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash -950945525, now seen corresponding path program 1 times [2021-12-06 19:33:36,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:36,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090163285] [2021-12-06 19:33:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:36,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:36,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:36,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090163285] [2021-12-06 19:33:36,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090163285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:36,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:36,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:33:36,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161113175] [2021-12-06 19:33:36,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:36,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:33:36,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:36,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:33:36,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:33:36,991 INFO L87 Difference]: Start difference. First operand 833 states and 1085 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:37,368 INFO L93 Difference]: Finished difference Result 940 states and 1208 transitions. [2021-12-06 19:33:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:37,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-06 19:33:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:37,369 INFO L225 Difference]: With dead ends: 940 [2021-12-06 19:33:37,369 INFO L226 Difference]: Without dead ends: 940 [2021-12-06 19:33:37,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:33:37,370 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 242 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:37,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1252 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:33:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-12-06 19:33:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 788. [2021-12-06 19:33:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 715 states have (on average 1.351048951048951) internal successors, (966), 753 states have internal predecessors, (966), 18 states have call successors, (18), 9 states have call predecessors, (18), 18 states have return successors, (36), 25 states have call predecessors, (36), 18 states have call successors, (36) [2021-12-06 19:33:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1020 transitions. [2021-12-06 19:33:37,377 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1020 transitions. Word has length 51 [2021-12-06 19:33:37,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:37,377 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1020 transitions. [2021-12-06 19:33:37,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1020 transitions. [2021-12-06 19:33:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 19:33:37,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:37,378 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:37,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-06 19:33:37,378 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:37,378 INFO L85 PathProgramCache]: Analyzing trace with hash 764231220, now seen corresponding path program 1 times [2021-12-06 19:33:37,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:37,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079276282] [2021-12-06 19:33:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:37,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:37,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079276282] [2021-12-06 19:33:37,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079276282] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807384752] [2021-12-06 19:33:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:37,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:37,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:37,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:37,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:33:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:37,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 19:33:37,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:37,665 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:33:37,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:33:37,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:33:37,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:33:37,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:37,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 19:33:37,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:37,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 19:33:37,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 19:33:37,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 19:33:37,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 19:33:37,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 19:33:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:37,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:33:37,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807384752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:37,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:33:37,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 23 [2021-12-06 19:33:37,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948255984] [2021-12-06 19:33:37,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:37,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:33:37,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:37,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:33:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:33:37,942 INFO L87 Difference]: Start difference. First operand 788 states and 1020 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:38,464 INFO L93 Difference]: Finished difference Result 1487 states and 1876 transitions. [2021-12-06 19:33:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:33:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-06 19:33:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:38,466 INFO L225 Difference]: With dead ends: 1487 [2021-12-06 19:33:38,466 INFO L226 Difference]: Without dead ends: 1487 [2021-12-06 19:33:38,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:33:38,467 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 756 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:38,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 1789 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:33:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-12-06 19:33:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 791. [2021-12-06 19:33:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 718 states have (on average 1.3481894150417828) internal successors, (968), 756 states have internal predecessors, (968), 18 states have call successors, (18), 9 states have call predecessors, (18), 18 states have return successors, (36), 25 states have call predecessors, (36), 18 states have call successors, (36) [2021-12-06 19:33:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1022 transitions. [2021-12-06 19:33:38,479 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1022 transitions. Word has length 52 [2021-12-06 19:33:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:38,479 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1022 transitions. [2021-12-06 19:33:38,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1022 transitions. [2021-12-06 19:33:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 19:33:38,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:38,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:38,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:33:38,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:38,681 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash 945744203, now seen corresponding path program 1 times [2021-12-06 19:33:38,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:38,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99852613] [2021-12-06 19:33:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:38,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:38,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:38,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99852613] [2021-12-06 19:33:38,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99852613] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:38,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539858524] [2021-12-06 19:33:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:38,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:39,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:39,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:39,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:33:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:39,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-06 19:33:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:39,199 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 19:33:39,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 19:33:39,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:39,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:39,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:39,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:39,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:39,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:39,542 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 19:33:39,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-12-06 19:33:39,549 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 19:33:39,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 19:33:39,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:39,951 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:33:39,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 28 [2021-12-06 19:33:39,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:39,956 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:33:39,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 10 [2021-12-06 19:33:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:40,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:40,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539858524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:40,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:33:40,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-12-06 19:33:40,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104007911] [2021-12-06 19:33:40,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:40,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 19:33:40,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:40,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 19:33:40,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=801, Unknown=4, NotChecked=0, Total=930 [2021-12-06 19:33:40,796 INFO L87 Difference]: Start difference. First operand 791 states and 1022 transitions. Second operand has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 20 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:41,530 INFO L93 Difference]: Finished difference Result 921 states and 1171 transitions. [2021-12-06 19:33:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:33:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 20 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-12-06 19:33:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:41,532 INFO L225 Difference]: With dead ends: 921 [2021-12-06 19:33:41,532 INFO L226 Difference]: Without dead ends: 921 [2021-12-06 19:33:41,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=318, Invalid=1658, Unknown=4, NotChecked=0, Total=1980 [2021-12-06 19:33:41,533 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 416 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:41,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 2103 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 807 Invalid, 0 Unknown, 283 Unchecked, 0.3s Time] [2021-12-06 19:33:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-12-06 19:33:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 857. [2021-12-06 19:33:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 781 states have (on average 1.3431498079385404) internal successors, (1049), 820 states have internal predecessors, (1049), 19 states have call successors, (19), 10 states have call predecessors, (19), 20 states have return successors, (38), 26 states have call predecessors, (38), 19 states have call successors, (38) [2021-12-06 19:33:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1106 transitions. [2021-12-06 19:33:41,541 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1106 transitions. Word has length 52 [2021-12-06 19:33:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:41,542 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 1106 transitions. [2021-12-06 19:33:41,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 20 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1106 transitions. [2021-12-06 19:33:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 19:33:41,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:41,542 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:41,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:33:41,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:41,743 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash 945744204, now seen corresponding path program 1 times [2021-12-06 19:33:41,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:41,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169665752] [2021-12-06 19:33:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:41,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:42,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:42,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169665752] [2021-12-06 19:33:42,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169665752] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:42,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255455821] [2021-12-06 19:33:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:42,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:42,008 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:42,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:33:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:42,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-06 19:33:42,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:42,198 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:33:42,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:33:42,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:42,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:42,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:42,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:42,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:42,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:33:42,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:42,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 19:33:42,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:42,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 19:33:42,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:42,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:42,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:42,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-12-06 19:33:42,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:42,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 19:33:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:42,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:42,883 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_609 (Array Int Int)) (v_ArrVal_613 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_609))) (store .cse0 |c_ULTIMATE.start_create_item_~cursor#1.base| (store (select .cse0 |c_ULTIMATE.start_create_item_~cursor#1.base|) |c_ULTIMATE.start_create_item_~cursor#1.offset| v_ArrVal_613))) |c_~#list~0.base|) (+ |c_~#list~0.offset| (* ~unnamed1~0~LIST_BEG 4))) 0)) (forall ((v_ArrVal_608 (Array Int Int)) (|ULTIMATE.start_create_item_~head~0#1.offset| Int)) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_608))) (store .cse1 |c_ULTIMATE.start_create_item_~cursor#1.base| (store (select .cse1 |c_ULTIMATE.start_create_item_~cursor#1.base|) |c_ULTIMATE.start_create_item_~cursor#1.offset| |ULTIMATE.start_create_item_~head~0#1.offset|))) |c_~#list~0.base|) (+ |c_~#list~0.offset| (* ~unnamed1~0~LIST_BEG 4))) 0))) is different from false [2021-12-06 19:33:43,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255455821] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:43,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:33:43,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-12-06 19:33:43,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238334827] [2021-12-06 19:33:43,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:43,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:33:43,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:33:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=456, Unknown=3, NotChecked=44, Total=600 [2021-12-06 19:33:43,168 INFO L87 Difference]: Start difference. First operand 857 states and 1106 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:33:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:43,377 INFO L93 Difference]: Finished difference Result 893 states and 1152 transitions. [2021-12-06 19:33:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:33:43,378 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2021-12-06 19:33:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:43,379 INFO L225 Difference]: With dead ends: 893 [2021-12-06 19:33:43,379 INFO L226 Difference]: Without dead ends: 893 [2021-12-06 19:33:43,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=560, Unknown=3, NotChecked=50, Total=756 [2021-12-06 19:33:43,379 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 130 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:43,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1524 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 292 Invalid, 0 Unknown, 127 Unchecked, 0.1s Time] [2021-12-06 19:33:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-12-06 19:33:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 883. [2021-12-06 19:33:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 807 states have (on average 1.338289962825279) internal successors, (1080), 846 states have internal predecessors, (1080), 19 states have call successors, (19), 10 states have call predecessors, (19), 20 states have return successors, (38), 26 states have call predecessors, (38), 19 states have call successors, (38) [2021-12-06 19:33:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1137 transitions. [2021-12-06 19:33:43,388 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1137 transitions. Word has length 52 [2021-12-06 19:33:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:43,388 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1137 transitions. [2021-12-06 19:33:43,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:33:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1137 transitions. [2021-12-06 19:33:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 19:33:43,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:43,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:43,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:33:43,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-12-06 19:33:43,589 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:43,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash 947591245, now seen corresponding path program 1 times [2021-12-06 19:33:43,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:43,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830490888] [2021-12-06 19:33:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:43,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:43,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:43,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830490888] [2021-12-06 19:33:43,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830490888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:43,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:43,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:33:43,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815138334] [2021-12-06 19:33:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:43,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:33:43,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:33:43,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:33:43,732 INFO L87 Difference]: Start difference. First operand 883 states and 1137 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:44,328 INFO L93 Difference]: Finished difference Result 1972 states and 2545 transitions. [2021-12-06 19:33:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:33:44,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-06 19:33:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:44,331 INFO L225 Difference]: With dead ends: 1972 [2021-12-06 19:33:44,331 INFO L226 Difference]: Without dead ends: 1972 [2021-12-06 19:33:44,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:33:44,332 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 1083 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:44,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 2042 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:33:44,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-12-06 19:33:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1083. [2021-12-06 19:33:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 995 states have (on average 1.3467336683417086) internal successors, (1340), 1037 states have internal predecessors, (1340), 25 states have call successors, (25), 13 states have call predecessors, (25), 26 states have return successors, (50), 32 states have call predecessors, (50), 25 states have call successors, (50) [2021-12-06 19:33:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1415 transitions. [2021-12-06 19:33:44,354 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1415 transitions. Word has length 52 [2021-12-06 19:33:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:44,355 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 1415 transitions. [2021-12-06 19:33:44,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1415 transitions. [2021-12-06 19:33:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 19:33:44,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:44,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:44,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-06 19:33:44,356 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash 947591246, now seen corresponding path program 1 times [2021-12-06 19:33:44,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:44,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781058222] [2021-12-06 19:33:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:44,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:44,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781058222] [2021-12-06 19:33:44,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781058222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:44,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:44,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:33:44,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406236010] [2021-12-06 19:33:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:44,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:33:44,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:33:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:44,579 INFO L87 Difference]: Start difference. First operand 1083 states and 1415 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:45,274 INFO L93 Difference]: Finished difference Result 1928 states and 2494 transitions. [2021-12-06 19:33:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:33:45,274 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-06 19:33:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:45,276 INFO L225 Difference]: With dead ends: 1928 [2021-12-06 19:33:45,277 INFO L226 Difference]: Without dead ends: 1928 [2021-12-06 19:33:45,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:33:45,277 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 754 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:45,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 2129 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:33:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-12-06 19:33:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1128. [2021-12-06 19:33:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1036 states have (on average 1.3484555984555984) internal successors, (1397), 1079 states have internal predecessors, (1397), 27 states have call successors, (27), 14 states have call predecessors, (27), 28 states have return successors, (54), 34 states have call predecessors, (54), 27 states have call successors, (54) [2021-12-06 19:33:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1478 transitions. [2021-12-06 19:33:45,290 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1478 transitions. Word has length 52 [2021-12-06 19:33:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:45,291 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1478 transitions. [2021-12-06 19:33:45,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1478 transitions. [2021-12-06 19:33:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:33:45,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:45,291 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:45,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-06 19:33:45,292 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:45,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash -689191823, now seen corresponding path program 1 times [2021-12-06 19:33:45,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:45,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271837419] [2021-12-06 19:33:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:45,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:45,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:45,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271837419] [2021-12-06 19:33:45,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271837419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:45,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:45,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 19:33:45,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229546441] [2021-12-06 19:33:45,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:45,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 19:33:45,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:45,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 19:33:45,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:33:45,631 INFO L87 Difference]: Start difference. First operand 1128 states and 1478 transitions. Second operand has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:47,386 INFO L93 Difference]: Finished difference Result 2558 states and 3348 transitions. [2021-12-06 19:33:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 19:33:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 19:33:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:47,389 INFO L225 Difference]: With dead ends: 2558 [2021-12-06 19:33:47,389 INFO L226 Difference]: Without dead ends: 2558 [2021-12-06 19:33:47,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=534, Invalid=1818, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 19:33:47,390 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1289 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:47,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 2666 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:33:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-12-06 19:33:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1354. [2021-12-06 19:33:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1238 states have (on average 1.3449111470113086) internal successors, (1665), 1287 states have internal predecessors, (1665), 39 states have call successors, (39), 20 states have call predecessors, (39), 40 states have return successors, (78), 46 states have call predecessors, (78), 39 states have call successors, (78) [2021-12-06 19:33:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1782 transitions. [2021-12-06 19:33:47,408 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1782 transitions. Word has length 53 [2021-12-06 19:33:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:47,408 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 1782 transitions. [2021-12-06 19:33:47,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1782 transitions. [2021-12-06 19:33:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:33:47,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:47,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:47,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-06 19:33:47,409 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:47,409 INFO L85 PathProgramCache]: Analyzing trace with hash -689191822, now seen corresponding path program 1 times [2021-12-06 19:33:47,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:47,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638221756] [2021-12-06 19:33:47,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:47,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:47,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:47,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638221756] [2021-12-06 19:33:47,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638221756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:47,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:47,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 19:33:47,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440169712] [2021-12-06 19:33:47,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:47,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:33:47,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:33:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:33:47,780 INFO L87 Difference]: Start difference. First operand 1354 states and 1782 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:48,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:48,848 INFO L93 Difference]: Finished difference Result 2451 states and 3219 transitions. [2021-12-06 19:33:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:33:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 19:33:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:48,851 INFO L225 Difference]: With dead ends: 2451 [2021-12-06 19:33:48,851 INFO L226 Difference]: Without dead ends: 2451 [2021-12-06 19:33:48,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 19:33:48,852 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1510 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:48,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1756 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:33:48,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-12-06 19:33:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1396. [2021-12-06 19:33:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1276 states have (on average 1.3463949843260188) internal successors, (1718), 1326 states have internal predecessors, (1718), 41 states have call successors, (41), 21 states have call predecessors, (41), 42 states have return successors, (82), 48 states have call predecessors, (82), 41 states have call successors, (82) [2021-12-06 19:33:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1841 transitions. [2021-12-06 19:33:48,871 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1841 transitions. Word has length 53 [2021-12-06 19:33:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:48,872 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1841 transitions. [2021-12-06 19:33:48,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1841 transitions. [2021-12-06 19:33:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:33:48,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:48,872 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:48,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-06 19:33:48,873 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash -687344781, now seen corresponding path program 1 times [2021-12-06 19:33:48,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:48,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573522428] [2021-12-06 19:33:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:48,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:49,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:49,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573522428] [2021-12-06 19:33:49,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573522428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:49,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:49,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:33:49,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29833225] [2021-12-06 19:33:49,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:49,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:33:49,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:49,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:33:49,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:49,019 INFO L87 Difference]: Start difference. First operand 1396 states and 1841 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:49,389 INFO L93 Difference]: Finished difference Result 2182 states and 2873 transitions. [2021-12-06 19:33:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:33:49,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 19:33:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:49,392 INFO L225 Difference]: With dead ends: 2182 [2021-12-06 19:33:49,392 INFO L226 Difference]: Without dead ends: 2182 [2021-12-06 19:33:49,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:33:49,392 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 748 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:49,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 1180 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:33:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2021-12-06 19:33:49,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1715. [2021-12-06 19:33:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1559 states have (on average 1.3380372033354715) internal successors, (2086), 1618 states have internal predecessors, (2086), 59 states have call successors, (59), 30 states have call predecessors, (59), 60 states have return successors, (118), 66 states have call predecessors, (118), 59 states have call successors, (118) [2021-12-06 19:33:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2263 transitions. [2021-12-06 19:33:49,413 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2263 transitions. Word has length 53 [2021-12-06 19:33:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:49,413 INFO L470 AbstractCegarLoop]: Abstraction has 1715 states and 2263 transitions. [2021-12-06 19:33:49,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2263 transitions. [2021-12-06 19:33:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:33:49,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:49,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:49,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-06 19:33:49,414 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash -687344780, now seen corresponding path program 1 times [2021-12-06 19:33:49,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192777366] [2021-12-06 19:33:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:49,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:49,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:49,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192777366] [2021-12-06 19:33:49,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192777366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:49,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:49,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:33:49,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906048834] [2021-12-06 19:33:49,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:49,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:33:49,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:33:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:33:49,626 INFO L87 Difference]: Start difference. First operand 1715 states and 2263 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:50,064 INFO L93 Difference]: Finished difference Result 2117 states and 2785 transitions. [2021-12-06 19:33:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:33:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 19:33:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:50,067 INFO L225 Difference]: With dead ends: 2117 [2021-12-06 19:33:50,067 INFO L226 Difference]: Without dead ends: 2117 [2021-12-06 19:33:50,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:33:50,068 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 621 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:50,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 997 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:33:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-12-06 19:33:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1502. [2021-12-06 19:33:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1370 states have (on average 1.3430656934306568) internal successors, (1840), 1423 states have internal predecessors, (1840), 47 states have call successors, (47), 24 states have call predecessors, (47), 48 states have return successors, (94), 54 states have call predecessors, (94), 47 states have call successors, (94) [2021-12-06 19:33:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1981 transitions. [2021-12-06 19:33:50,092 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1981 transitions. Word has length 53 [2021-12-06 19:33:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:50,092 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 1981 transitions. [2021-12-06 19:33:50,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1981 transitions. [2021-12-06 19:33:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:33:50,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:50,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:50,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-06 19:33:50,093 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -510671054, now seen corresponding path program 1 times [2021-12-06 19:33:50,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:50,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990914740] [2021-12-06 19:33:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:50,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:50,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:50,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990914740] [2021-12-06 19:33:50,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990914740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:50,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:50,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:33:50,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697901446] [2021-12-06 19:33:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:50,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:33:50,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:33:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:33:50,239 INFO L87 Difference]: Start difference. First operand 1502 states and 1981 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:50,540 INFO L93 Difference]: Finished difference Result 2191 states and 2878 transitions. [2021-12-06 19:33:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:33:50,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 19:33:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:50,542 INFO L225 Difference]: With dead ends: 2191 [2021-12-06 19:33:50,542 INFO L226 Difference]: Without dead ends: 2191 [2021-12-06 19:33:50,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:33:50,543 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 783 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:50,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1228 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:50,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2021-12-06 19:33:50,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1502. [2021-12-06 19:33:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1370 states have (on average 1.3372262773722627) internal successors, (1832), 1423 states have internal predecessors, (1832), 47 states have call successors, (47), 24 states have call predecessors, (47), 48 states have return successors, (94), 54 states have call predecessors, (94), 47 states have call successors, (94) [2021-12-06 19:33:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1973 transitions. [2021-12-06 19:33:50,568 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1973 transitions. Word has length 53 [2021-12-06 19:33:50,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:50,568 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 1973 transitions. [2021-12-06 19:33:50,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1973 transitions. [2021-12-06 19:33:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:33:50,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:50,569 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:50,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-06 19:33:50,569 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:50,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash -746702023, now seen corresponding path program 1 times [2021-12-06 19:33:50,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:50,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558091990] [2021-12-06 19:33:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:50,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:50,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:50,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558091990] [2021-12-06 19:33:50,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558091990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:50,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:50,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 19:33:50,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511527274] [2021-12-06 19:33:50,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:50,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:33:50,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:50,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:33:50,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:33:50,827 INFO L87 Difference]: Start difference. First operand 1502 states and 1973 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:51,754 INFO L93 Difference]: Finished difference Result 2538 states and 3290 transitions. [2021-12-06 19:33:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:33:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 19:33:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:51,758 INFO L225 Difference]: With dead ends: 2538 [2021-12-06 19:33:51,758 INFO L226 Difference]: Without dead ends: 2538 [2021-12-06 19:33:51,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:33:51,759 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1106 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:51,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 2822 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:33:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-12-06 19:33:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1413. [2021-12-06 19:33:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1284 states have (on average 1.3426791277258567) internal successors, (1724), 1336 states have internal predecessors, (1724), 46 states have call successors, (46), 23 states have call predecessors, (46), 46 states have return successors, (92), 53 states have call predecessors, (92), 46 states have call successors, (92) [2021-12-06 19:33:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1862 transitions. [2021-12-06 19:33:51,787 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1862 transitions. Word has length 53 [2021-12-06 19:33:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:51,787 INFO L470 AbstractCegarLoop]: Abstraction has 1413 states and 1862 transitions. [2021-12-06 19:33:51,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1862 transitions. [2021-12-06 19:33:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 19:33:51,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:51,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:51,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-06 19:33:51,788 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash 109888723, now seen corresponding path program 1 times [2021-12-06 19:33:51,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:51,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249542725] [2021-12-06 19:33:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:51,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:51,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:51,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249542725] [2021-12-06 19:33:51,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249542725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:51,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:51,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:33:51,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938242212] [2021-12-06 19:33:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:51,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:33:51,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:33:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:33:51,959 INFO L87 Difference]: Start difference. First operand 1413 states and 1862 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:52,233 INFO L93 Difference]: Finished difference Result 1813 states and 2381 transitions. [2021-12-06 19:33:52,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:33:52,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-06 19:33:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:52,235 INFO L225 Difference]: With dead ends: 1813 [2021-12-06 19:33:52,235 INFO L226 Difference]: Without dead ends: 1813 [2021-12-06 19:33:52,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:33:52,236 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 1064 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:52,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 1136 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2021-12-06 19:33:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1502. [2021-12-06 19:33:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1365 states have (on average 1.345787545787546) internal successors, (1837), 1419 states have internal predecessors, (1837), 50 states have call successors, (50), 25 states have call predecessors, (50), 50 states have return successors, (100), 57 states have call predecessors, (100), 50 states have call successors, (100) [2021-12-06 19:33:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1987 transitions. [2021-12-06 19:33:52,251 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1987 transitions. Word has length 54 [2021-12-06 19:33:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:52,251 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 1987 transitions. [2021-12-06 19:33:52,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1987 transitions. [2021-12-06 19:33:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 19:33:52,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:52,251 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:52,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-06 19:33:52,252 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash 167147025, now seen corresponding path program 1 times [2021-12-06 19:33:52,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:52,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232441939] [2021-12-06 19:33:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:52,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:52,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232441939] [2021-12-06 19:33:52,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232441939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:52,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:52,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:33:52,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089119023] [2021-12-06 19:33:52,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:52,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:33:52,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:33:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:33:52,374 INFO L87 Difference]: Start difference. First operand 1502 states and 1987 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:52,644 INFO L93 Difference]: Finished difference Result 2117 states and 2790 transitions. [2021-12-06 19:33:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:33:52,645 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-06 19:33:52,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:52,648 INFO L225 Difference]: With dead ends: 2117 [2021-12-06 19:33:52,648 INFO L226 Difference]: Without dead ends: 2117 [2021-12-06 19:33:52,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:33:52,648 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 923 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:52,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1029 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-12-06 19:33:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1796. [2021-12-06 19:33:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1627 states have (on average 1.342962507682852) internal successors, (2185), 1689 states have internal predecessors, (2185), 66 states have call successors, (66), 33 states have call predecessors, (66), 66 states have return successors, (132), 73 states have call predecessors, (132), 66 states have call successors, (132) [2021-12-06 19:33:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2383 transitions. [2021-12-06 19:33:52,676 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2383 transitions. Word has length 54 [2021-12-06 19:33:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:52,677 INFO L470 AbstractCegarLoop]: Abstraction has 1796 states and 2383 transitions. [2021-12-06 19:33:52,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2383 transitions. [2021-12-06 19:33:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 19:33:52,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:52,678 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:52,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-06 19:33:52,678 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:52,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1735229320, now seen corresponding path program 1 times [2021-12-06 19:33:52,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:52,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859368836] [2021-12-06 19:33:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:52,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:52,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:52,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:52,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859368836] [2021-12-06 19:33:52,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859368836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:52,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:52,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 19:33:52,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770112322] [2021-12-06 19:33:52,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:52,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:33:52,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:33:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:33:52,851 INFO L87 Difference]: Start difference. First operand 1796 states and 2383 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:53,475 INFO L93 Difference]: Finished difference Result 3129 states and 4169 transitions. [2021-12-06 19:33:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 19:33:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-06 19:33:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:53,478 INFO L225 Difference]: With dead ends: 3129 [2021-12-06 19:33:53,478 INFO L226 Difference]: Without dead ends: 3129 [2021-12-06 19:33:53,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 19:33:53,478 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 854 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:53,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2970 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:33:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-12-06 19:33:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1543. [2021-12-06 19:33:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1402 states have (on average 1.3466476462196861) internal successors, (1888), 1457 states have internal predecessors, (1888), 52 states have call successors, (52), 26 states have call predecessors, (52), 52 states have return successors, (104), 59 states have call predecessors, (104), 52 states have call successors, (104) [2021-12-06 19:33:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2044 transitions. [2021-12-06 19:33:53,498 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2044 transitions. Word has length 54 [2021-12-06 19:33:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:53,499 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 2044 transitions. [2021-12-06 19:33:53,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2044 transitions. [2021-12-06 19:33:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 19:33:53,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:53,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:53,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-06 19:33:53,499 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1769661897, now seen corresponding path program 1 times [2021-12-06 19:33:53,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:53,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546771820] [2021-12-06 19:33:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:53,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:53,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:53,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546771820] [2021-12-06 19:33:53,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546771820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:53,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:53,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 19:33:53,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475469620] [2021-12-06 19:33:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:53,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 19:33:53,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 19:33:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:33:53,762 INFO L87 Difference]: Start difference. First operand 1543 states and 2044 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:54,993 INFO L93 Difference]: Finished difference Result 2856 states and 3791 transitions. [2021-12-06 19:33:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 19:33:54,993 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-06 19:33:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:54,995 INFO L225 Difference]: With dead ends: 2856 [2021-12-06 19:33:54,995 INFO L226 Difference]: Without dead ends: 2856 [2021-12-06 19:33:54,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=439, Invalid=1541, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 19:33:54,996 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1939 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:54,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1941 Valid, 1702 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:33:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2021-12-06 19:33:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 1555. [2021-12-06 19:33:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1414 states have (on average 1.3458274398868457) internal successors, (1903), 1469 states have internal predecessors, (1903), 52 states have call successors, (52), 26 states have call predecessors, (52), 52 states have return successors, (104), 59 states have call predecessors, (104), 52 states have call successors, (104) [2021-12-06 19:33:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2059 transitions. [2021-12-06 19:33:55,015 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2059 transitions. Word has length 56 [2021-12-06 19:33:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:55,015 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 2059 transitions. [2021-12-06 19:33:55,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2059 transitions. [2021-12-06 19:33:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 19:33:55,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:55,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:55,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-06 19:33:55,016 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1715958773, now seen corresponding path program 1 times [2021-12-06 19:33:55,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:55,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54672776] [2021-12-06 19:33:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:55,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:55,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54672776] [2021-12-06 19:33:55,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54672776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:55,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:55,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:33:55,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284274118] [2021-12-06 19:33:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:55,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:33:55,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:33:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:33:55,122 INFO L87 Difference]: Start difference. First operand 1555 states and 2059 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:55,372 INFO L93 Difference]: Finished difference Result 2172 states and 2865 transitions. [2021-12-06 19:33:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:33:55,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-06 19:33:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:55,374 INFO L225 Difference]: With dead ends: 2172 [2021-12-06 19:33:55,374 INFO L226 Difference]: Without dead ends: 2172 [2021-12-06 19:33:55,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:33:55,374 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 883 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:55,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 813 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:33:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-12-06 19:33:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1849. [2021-12-06 19:33:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1676 states have (on average 1.3430787589498807) internal successors, (2251), 1739 states have internal predecessors, (2251), 68 states have call successors, (68), 34 states have call predecessors, (68), 68 states have return successors, (136), 75 states have call predecessors, (136), 68 states have call successors, (136) [2021-12-06 19:33:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2455 transitions. [2021-12-06 19:33:55,395 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2455 transitions. Word has length 56 [2021-12-06 19:33:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:55,395 INFO L470 AbstractCegarLoop]: Abstraction has 1849 states and 2455 transitions. [2021-12-06 19:33:55,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2455 transitions. [2021-12-06 19:33:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 19:33:55,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:55,395 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:55,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-06 19:33:55,396 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -773838198, now seen corresponding path program 1 times [2021-12-06 19:33:55,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:55,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379439183] [2021-12-06 19:33:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:55,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 19:33:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:33:55,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379439183] [2021-12-06 19:33:55,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379439183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:55,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:55,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:33:55,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32104557] [2021-12-06 19:33:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:55,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:33:55,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:33:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:33:55,438 INFO L87 Difference]: Start difference. First operand 1849 states and 2455 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:33:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:55,485 INFO L93 Difference]: Finished difference Result 2201 states and 2894 transitions. [2021-12-06 19:33:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:33:55,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-06 19:33:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:55,487 INFO L225 Difference]: With dead ends: 2201 [2021-12-06 19:33:55,487 INFO L226 Difference]: Without dead ends: 2201 [2021-12-06 19:33:55,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:33:55,487 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 312 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:55,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 497 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:33:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-12-06 19:33:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 1848. [2021-12-06 19:33:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1676 states have (on average 1.331145584725537) internal successors, (2231), 1738 states have internal predecessors, (2231), 68 states have call successors, (68), 34 states have call predecessors, (68), 68 states have return successors, (136), 75 states have call predecessors, (136), 68 states have call successors, (136) [2021-12-06 19:33:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2435 transitions. [2021-12-06 19:33:55,504 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2435 transitions. Word has length 57 [2021-12-06 19:33:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:55,504 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 2435 transitions. [2021-12-06 19:33:55,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:33:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2435 transitions. [2021-12-06 19:33:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 19:33:55,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:55,505 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:55,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-06 19:33:55,505 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1106607972, now seen corresponding path program 1 times [2021-12-06 19:33:55,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:55,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837731804] [2021-12-06 19:33:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:55,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:55,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:55,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837731804] [2021-12-06 19:33:55,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837731804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:55,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:55,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 19:33:55,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418554443] [2021-12-06 19:33:55,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:55,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:33:55,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:33:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:33:55,770 INFO L87 Difference]: Start difference. First operand 1848 states and 2435 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:56,449 INFO L93 Difference]: Finished difference Result 2601 states and 3386 transitions. [2021-12-06 19:33:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 19:33:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-06 19:33:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:56,452 INFO L225 Difference]: With dead ends: 2601 [2021-12-06 19:33:56,452 INFO L226 Difference]: Without dead ends: 2601 [2021-12-06 19:33:56,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:33:56,452 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1048 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:56,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 2499 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:33:56,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-12-06 19:33:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 1546. [2021-12-06 19:33:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1406 states have (on average 1.3349928876244666) internal successors, (1877), 1460 states have internal predecessors, (1877), 52 states have call successors, (52), 26 states have call predecessors, (52), 52 states have return successors, (104), 59 states have call predecessors, (104), 52 states have call successors, (104) [2021-12-06 19:33:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2033 transitions. [2021-12-06 19:33:56,469 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2033 transitions. Word has length 56 [2021-12-06 19:33:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:56,469 INFO L470 AbstractCegarLoop]: Abstraction has 1546 states and 2033 transitions. [2021-12-06 19:33:56,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:33:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2033 transitions. [2021-12-06 19:33:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 19:33:56,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:56,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:56,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-06 19:33:56,470 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1780819851, now seen corresponding path program 1 times [2021-12-06 19:33:56,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:56,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414305162] [2021-12-06 19:33:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:56,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 19:33:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:33:56,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:56,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414305162] [2021-12-06 19:33:56,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414305162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:56,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:56,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 19:33:56,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418650755] [2021-12-06 19:33:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:56,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 19:33:56,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 19:33:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:33:56,744 INFO L87 Difference]: Start difference. First operand 1546 states and 2033 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:57,686 INFO L93 Difference]: Finished difference Result 3596 states and 4798 transitions. [2021-12-06 19:33:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:33:57,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-12-06 19:33:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:57,691 INFO L225 Difference]: With dead ends: 3596 [2021-12-06 19:33:57,691 INFO L226 Difference]: Without dead ends: 3594 [2021-12-06 19:33:57,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 19:33:57,691 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1863 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:57,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1863 Valid, 2560 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:33:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2021-12-06 19:33:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 1648. [2021-12-06 19:33:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1496 states have (on average 1.3282085561497325) internal successors, (1987), 1553 states have internal predecessors, (1987), 58 states have call successors, (58), 29 states have call predecessors, (58), 58 states have return successors, (116), 65 states have call predecessors, (116), 58 states have call successors, (116) [2021-12-06 19:33:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2161 transitions. [2021-12-06 19:33:57,710 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2161 transitions. Word has length 58 [2021-12-06 19:33:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:57,710 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2161 transitions. [2021-12-06 19:33:57,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:33:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2161 transitions. [2021-12-06 19:33:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 19:33:57,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:57,711 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:57,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-06 19:33:57,711 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash 765562808, now seen corresponding path program 1 times [2021-12-06 19:33:57,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:57,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069667427] [2021-12-06 19:33:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:57,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:33:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:33:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:33:57,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:57,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069667427] [2021-12-06 19:33:57,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069667427] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:57,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417226289] [2021-12-06 19:33:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:57,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:57,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:57,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:57,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:33:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:58,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-06 19:33:58,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:58,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:33:58,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:33:58,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:58,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 19:33:58,399 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 19:33:58,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 19:33:58,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 19:33:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:58,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:58,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417226289] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:58,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:33:58,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 26 [2021-12-06 19:33:58,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928732919] [2021-12-06 19:33:58,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:58,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 19:33:58,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 19:33:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2021-12-06 19:33:58,508 INFO L87 Difference]: Start difference. First operand 1648 states and 2161 transitions. Second operand has 27 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:33:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:59,644 INFO L93 Difference]: Finished difference Result 2848 states and 3724 transitions. [2021-12-06 19:33:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 19:33:59,644 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2021-12-06 19:33:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:59,647 INFO L225 Difference]: With dead ends: 2848 [2021-12-06 19:33:59,647 INFO L226 Difference]: Without dead ends: 2848 [2021-12-06 19:33:59,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=671, Invalid=2521, Unknown=0, NotChecked=0, Total=3192 [2021-12-06 19:33:59,648 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 3043 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:59,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3044 Valid, 2526 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:33:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-12-06 19:33:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1678. [2021-12-06 19:33:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1526 states have (on average 1.3296199213630406) internal successors, (2029), 1580 states have internal predecessors, (2029), 58 states have call successors, (58), 29 states have call predecessors, (58), 58 states have return successors, (116), 68 states have call predecessors, (116), 58 states have call successors, (116) [2021-12-06 19:33:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2203 transitions. [2021-12-06 19:33:59,670 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2203 transitions. Word has length 58 [2021-12-06 19:33:59,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:59,670 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 2203 transitions. [2021-12-06 19:33:59,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:33:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2203 transitions. [2021-12-06 19:33:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 19:33:59,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:59,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:59,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:33:59,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:59,872 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:33:59,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash 765562809, now seen corresponding path program 1 times [2021-12-06 19:33:59,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:59,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737516577] [2021-12-06 19:33:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:59,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:34:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:34:00,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:00,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737516577] [2021-12-06 19:34:00,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737516577] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:00,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234424031] [2021-12-06 19:34:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:00,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:00,387 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:00,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:34:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 19:34:00,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:00,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:34:00,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:34:00,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:00,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:00,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:00,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2021-12-06 19:34:00,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:00,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:34:01,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:01,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 19:34:01,057 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 19:34:01,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 19:34:01,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:01,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 19:34:01,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:01,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 19:34:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:01,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:01,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234424031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:01,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:34:01,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 34 [2021-12-06 19:34:01,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291611197] [2021-12-06 19:34:01,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:01,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 19:34:01,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:01,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 19:34:01,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 19:34:01,712 INFO L87 Difference]: Start difference. First operand 1678 states and 2203 transitions. Second operand has 35 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 31 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:04,284 INFO L93 Difference]: Finished difference Result 4132 states and 5378 transitions. [2021-12-06 19:34:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:34:04,284 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 31 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2021-12-06 19:34:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:04,288 INFO L225 Difference]: With dead ends: 4132 [2021-12-06 19:34:04,288 INFO L226 Difference]: Without dead ends: 4132 [2021-12-06 19:34:04,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=711, Invalid=4119, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 19:34:04,289 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 2814 mSDsluCounter, 4904 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:04,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2814 Valid, 5126 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 3158 Invalid, 0 Unknown, 548 Unchecked, 1.3s Time] [2021-12-06 19:34:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2021-12-06 19:34:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 3048. [2021-12-06 19:34:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 2792 states have (on average 1.3277220630372493) internal successors, (3707), 2863 states have internal predecessors, (3707), 110 states have call successors, (110), 55 states have call predecessors, (110), 110 states have return successors, (220), 129 states have call predecessors, (220), 110 states have call successors, (220) [2021-12-06 19:34:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4037 transitions. [2021-12-06 19:34:04,323 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4037 transitions. Word has length 58 [2021-12-06 19:34:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:04,324 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 4037 transitions. [2021-12-06 19:34:04,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 31 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4037 transitions. [2021-12-06 19:34:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 19:34:04,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:04,324 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:04,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:34:04,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-12-06 19:34:04,526 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash -581458318, now seen corresponding path program 1 times [2021-12-06 19:34:04,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:04,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706096142] [2021-12-06 19:34:04,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:04,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 19:34:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:34:04,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:04,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706096142] [2021-12-06 19:34:04,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706096142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:34:04,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:34:04,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 19:34:04,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254135346] [2021-12-06 19:34:04,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:34:04,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:34:04,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:34:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:34:04,931 INFO L87 Difference]: Start difference. First operand 3048 states and 4037 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:34:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:06,113 INFO L93 Difference]: Finished difference Result 6055 states and 8266 transitions. [2021-12-06 19:34:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 19:34:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-12-06 19:34:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:06,120 INFO L225 Difference]: With dead ends: 6055 [2021-12-06 19:34:06,120 INFO L226 Difference]: Without dead ends: 6047 [2021-12-06 19:34:06,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=373, Invalid=1109, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 19:34:06,120 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 1784 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:06,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 2506 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:34:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6047 states. [2021-12-06 19:34:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6047 to 2684. [2021-12-06 19:34:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2468 states have (on average 1.3245542949756888) internal successors, (3269), 2529 states have internal predecessors, (3269), 90 states have call successors, (90), 45 states have call predecessors, (90), 90 states have return successors, (180), 109 states have call predecessors, (180), 90 states have call successors, (180) [2021-12-06 19:34:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3539 transitions. [2021-12-06 19:34:06,164 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3539 transitions. Word has length 58 [2021-12-06 19:34:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:06,164 INFO L470 AbstractCegarLoop]: Abstraction has 2684 states and 3539 transitions. [2021-12-06 19:34:06,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:34:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3539 transitions. [2021-12-06 19:34:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:34:06,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:06,165 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:06,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-12-06 19:34:06,165 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:06,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:06,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1541651178, now seen corresponding path program 1 times [2021-12-06 19:34:06,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:06,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547820606] [2021-12-06 19:34:06,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:06,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:34:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:34:06,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:06,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547820606] [2021-12-06 19:34:06,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547820606] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:06,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723417776] [2021-12-06 19:34:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:06,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:06,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:06,302 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:06,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:34:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:06,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 19:34:06,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:06,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:34:06,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:06,815 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 19:34:06,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 37 [2021-12-06 19:34:06,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:06,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 19:34:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:06,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:06,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723417776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:06,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:34:06,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 19:34:06,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274208256] [2021-12-06 19:34:06,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:06,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 19:34:06,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 19:34:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:34:06,963 INFO L87 Difference]: Start difference. First operand 2684 states and 3539 transitions. Second operand has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 20 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:07,565 INFO L93 Difference]: Finished difference Result 5654 states and 7496 transitions. [2021-12-06 19:34:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:34:07,566 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 20 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59 [2021-12-06 19:34:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:07,572 INFO L225 Difference]: With dead ends: 5654 [2021-12-06 19:34:07,572 INFO L226 Difference]: Without dead ends: 5654 [2021-12-06 19:34:07,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:34:07,572 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1068 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:07,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 2422 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1004 Invalid, 0 Unknown, 89 Unchecked, 0.4s Time] [2021-12-06 19:34:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-12-06 19:34:07,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5265. [2021-12-06 19:34:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 4838 states have (on average 1.3290615957007028) internal successors, (6430), 4958 states have internal predecessors, (6430), 193 states have call successors, (193), 99 states have call predecessors, (193), 198 states have return successors, (386), 207 states have call predecessors, (386), 193 states have call successors, (386) [2021-12-06 19:34:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 7009 transitions. [2021-12-06 19:34:07,630 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 7009 transitions. Word has length 59 [2021-12-06 19:34:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:07,631 INFO L470 AbstractCegarLoop]: Abstraction has 5265 states and 7009 transitions. [2021-12-06 19:34:07,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 20 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 7009 transitions. [2021-12-06 19:34:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:34:07,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:07,631 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:07,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 19:34:07,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:07,833 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:07,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1541651179, now seen corresponding path program 1 times [2021-12-06 19:34:07,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:07,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386244146] [2021-12-06 19:34:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:07,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:34:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:34:08,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:08,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386244146] [2021-12-06 19:34:08,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386244146] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:08,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858504507] [2021-12-06 19:34:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:08,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:08,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:08,132 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:08,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:34:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-06 19:34:08,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:08,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:34:08,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:34:08,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:08,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:08,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:08,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:34:08,698 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 19:34:08,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-06 19:34:08,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-06 19:34:08,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:34:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:08,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:08,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858504507] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:08,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:34:08,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-12-06 19:34:08,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606046825] [2021-12-06 19:34:08,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:08,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:34:08,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:08,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:34:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2021-12-06 19:34:08,940 INFO L87 Difference]: Start difference. First operand 5265 states and 7009 transitions. Second operand has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:10,559 INFO L93 Difference]: Finished difference Result 7551 states and 10078 transitions. [2021-12-06 19:34:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 19:34:10,559 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59 [2021-12-06 19:34:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:10,567 INFO L225 Difference]: With dead ends: 7551 [2021-12-06 19:34:10,567 INFO L226 Difference]: Without dead ends: 7551 [2021-12-06 19:34:10,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=451, Invalid=2099, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 19:34:10,568 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 2302 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:10,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2302 Valid, 2774 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 19:34:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2021-12-06 19:34:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 5811. [2021-12-06 19:34:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 5312 states have (on average 1.3226656626506024) internal successors, (7026), 5450 states have internal predecessors, (7026), 217 states have call successors, (217), 123 states have call predecessors, (217), 246 states have return successors, (434), 237 states have call predecessors, (434), 217 states have call successors, (434) [2021-12-06 19:34:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 7677 transitions. [2021-12-06 19:34:10,630 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 7677 transitions. Word has length 59 [2021-12-06 19:34:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:10,630 INFO L470 AbstractCegarLoop]: Abstraction has 5811 states and 7677 transitions. [2021-12-06 19:34:10,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 7677 transitions. [2021-12-06 19:34:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:34:10,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:10,631 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:10,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:34:10,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:10,832 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1325471971, now seen corresponding path program 1 times [2021-12-06 19:34:10,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:10,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534393665] [2021-12-06 19:34:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:10,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:34:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:34:11,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:11,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534393665] [2021-12-06 19:34:11,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534393665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:11,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035518456] [2021-12-06 19:34:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:11,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:11,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:11,108 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:11,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:34:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:11,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 19:34:11,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:11,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:11,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:11,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 19:34:11,688 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 19:34:11,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 37 [2021-12-06 19:34:11,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:11,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 19:34:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:11,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:11,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035518456] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:11,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:34:11,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-12-06 19:34:11,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034611718] [2021-12-06 19:34:11,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:11,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:34:11,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:11,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:34:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2021-12-06 19:34:11,844 INFO L87 Difference]: Start difference. First operand 5811 states and 7677 transitions. Second operand has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 21 states have internal predecessors, (106), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:12,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:12,650 INFO L93 Difference]: Finished difference Result 11672 states and 15469 transitions. [2021-12-06 19:34:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:34:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 21 states have internal predecessors, (106), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59 [2021-12-06 19:34:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:12,662 INFO L225 Difference]: With dead ends: 11672 [2021-12-06 19:34:12,662 INFO L226 Difference]: Without dead ends: 11672 [2021-12-06 19:34:12,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 19:34:12,662 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 788 mSDsluCounter, 2933 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:12,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3184 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1164 Invalid, 0 Unknown, 40 Unchecked, 0.4s Time] [2021-12-06 19:34:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11672 states. [2021-12-06 19:34:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11672 to 11049. [2021-12-06 19:34:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11049 states, 10099 states have (on average 1.3297356173878603) internal successors, (13429), 10374 states have internal predecessors, (13429), 428 states have call successors, (428), 243 states have call predecessors, (428), 486 states have return successors, (856), 431 states have call predecessors, (856), 428 states have call successors, (856) [2021-12-06 19:34:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11049 states to 11049 states and 14713 transitions. [2021-12-06 19:34:12,801 INFO L78 Accepts]: Start accepts. Automaton has 11049 states and 14713 transitions. Word has length 59 [2021-12-06 19:34:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:12,801 INFO L470 AbstractCegarLoop]: Abstraction has 11049 states and 14713 transitions. [2021-12-06 19:34:12,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 21 states have internal predecessors, (106), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 11049 states and 14713 transitions. [2021-12-06 19:34:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:34:12,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:12,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:12,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 19:34:13,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-12-06 19:34:13,004 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1325471972, now seen corresponding path program 1 times [2021-12-06 19:34:13,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:13,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805840632] [2021-12-06 19:34:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:13,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:34:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:34:13,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:13,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805840632] [2021-12-06 19:34:13,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805840632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:13,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586423699] [2021-12-06 19:34:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:13,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:13,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:13,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:13,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 19:34:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:13,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-06 19:34:13,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:13,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:34:13,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:34:13,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:13,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:14,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:14,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2021-12-06 19:34:14,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:14,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:34:14,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:14,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 19:34:14,277 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 19:34:14,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 19:34:14,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:14,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 19:34:14,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:14,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 19:34:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:14,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:14,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586423699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:14,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:34:14,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-12-06 19:34:14,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641908013] [2021-12-06 19:34:14,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:14,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 19:34:14,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:14,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 19:34:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 19:34:14,627 INFO L87 Difference]: Start difference. First operand 11049 states and 14713 transitions. Second operand has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:15,911 INFO L93 Difference]: Finished difference Result 11906 states and 15704 transitions. [2021-12-06 19:34:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:34:15,912 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59 [2021-12-06 19:34:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:15,923 INFO L225 Difference]: With dead ends: 11906 [2021-12-06 19:34:15,923 INFO L226 Difference]: Without dead ends: 11906 [2021-12-06 19:34:15,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=321, Invalid=1659, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 19:34:15,923 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 962 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 748 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:15,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 3442 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1142 Invalid, 0 Unknown, 748 Unchecked, 0.5s Time] [2021-12-06 19:34:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11906 states. [2021-12-06 19:34:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11906 to 11127. [2021-12-06 19:34:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11127 states, 10129 states have (on average 1.3281666502122618) internal successors, (13453), 10434 states have internal predecessors, (13453), 428 states have call successors, (428), 267 states have call predecessors, (428), 534 states have return successors, (856), 425 states have call predecessors, (856), 428 states have call successors, (856) [2021-12-06 19:34:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11127 states to 11127 states and 14737 transitions. [2021-12-06 19:34:16,039 INFO L78 Accepts]: Start accepts. Automaton has 11127 states and 14737 transitions. Word has length 59 [2021-12-06 19:34:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:16,039 INFO L470 AbstractCegarLoop]: Abstraction has 11127 states and 14737 transitions. [2021-12-06 19:34:16,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:34:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 11127 states and 14737 transitions. [2021-12-06 19:34:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:34:16,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:16,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:16,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 19:34:16,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:16,241 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash 726312246, now seen corresponding path program 1 times [2021-12-06 19:34:16,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:16,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656757622] [2021-12-06 19:34:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:16,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:17,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:17,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656757622] [2021-12-06 19:34:17,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656757622] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:17,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985108571] [2021-12-06 19:34:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:17,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:17,097 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:17,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:34:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:17,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-06 19:34:17,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:17,241 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:34:17,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:34:17,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:17,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:34:17,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:34:17,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:34:17,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:34:17,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:34:17,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:34:17,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 19:34:17,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-06 19:34:17,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:17,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:18,004 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 19:34:18,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 51 [2021-12-06 19:34:18,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-06 19:34:18,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:18,276 INFO L354 Elim1Store]: treesize reduction 27, result has 22.9 percent of original size [2021-12-06 19:34:18,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 42 [2021-12-06 19:34:18,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:18,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 19:34:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:18,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:18,525 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1797 Int)) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |c_ULTIMATE.start_append_one_~list#1.offset|) v_ArrVal_1797)))) (select .cse0 (select (select .cse0 |c_~#list~0.base|) (+ |c_~#list~0.offset| (* ~unnamed1~0~LIST_BEG 4))))) 4) 0)) (forall ((v_ArrVal_1795 (Array Int Int)) (v_ArrVal_1797 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_one_~list#1.base| v_ArrVal_1795) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |c_ULTIMATE.start_append_one_~list#1.offset|) v_ArrVal_1797)) |c_~#list~0.base|) (+ |c_~#list~0.offset| (* ~unnamed1~0~LIST_BEG 4)))) 4) 0))) is different from false [2021-12-06 19:34:19,799 INFO L354 Elim1Store]: treesize reduction 90, result has 38.8 percent of original size [2021-12-06 19:34:19,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 122 [2021-12-06 19:34:19,953 INFO L354 Elim1Store]: treesize reduction 126, result has 61.2 percent of original size [2021-12-06 19:34:19,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 7096 treesize of output 6580 [2021-12-06 19:34:20,042 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:20,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18302 treesize of output 17218 [2021-12-06 19:34:21,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1388 treesize of output 1372 [2021-12-06 19:34:28,678 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:28,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1217 treesize of output 1 [2021-12-06 19:34:28,765 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:28,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1217 treesize of output 1 [2021-12-06 19:34:28,877 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:28,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1000 treesize of output 1 [2021-12-06 19:34:28,969 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:28,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1000 treesize of output 1 [2021-12-06 19:34:29,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:29,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:29,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:29,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:29,052 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 19:34:29,151 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:29,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1234 treesize of output 1 [2021-12-06 19:34:29,307 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:29,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1234 treesize of output 1 [2021-12-06 19:34:29,727 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:29,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1451 treesize of output 1 [2021-12-06 19:34:29,797 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:34:29,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1234 treesize of output 1 [2021-12-06 19:34:30,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,332 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 19:34:30,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:30,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 123 [2021-12-06 19:34:30,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:30,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 123 [2021-12-06 19:34:30,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:30,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 126 [2021-12-06 19:34:30,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:30,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:30,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 123 [2021-12-06 19:34:31,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 433 treesize of output 409 [2021-12-06 19:34:31,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 650 treesize of output 614 [2021-12-06 19:34:33,911 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 19:34:33,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 915 treesize of output 867 [2021-12-06 19:34:37,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:44,522 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 19:34:44,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:34:44,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-06 19:34:44,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795446735] [2021-12-06 19:34:44,522 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:44,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 19:34:44,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 19:34:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2256, Unknown=23, NotChecked=96, Total=2550 [2021-12-06 19:34:44,523 INFO L87 Difference]: Start difference. First operand 11127 states and 14737 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:34:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:49,514 INFO L93 Difference]: Finished difference Result 16834 states and 22546 transitions. [2021-12-06 19:34:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-06 19:34:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-12-06 19:34:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:49,531 INFO L225 Difference]: With dead ends: 16834 [2021-12-06 19:34:49,532 INFO L226 Difference]: Without dead ends: 16834 [2021-12-06 19:34:49,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2675 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1186, Invalid=8497, Unknown=23, NotChecked=194, Total=9900 [2021-12-06 19:34:49,533 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 2663 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:49,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2669 Valid, 3435 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 19:34:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16834 states. [2021-12-06 19:34:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16834 to 11635. [2021-12-06 19:34:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11635 states, 10577 states have (on average 1.3235321924931456) internal successors, (13999), 10902 states have internal predecessors, (13999), 456 states have call successors, (456), 283 states have call predecessors, (456), 566 states have return successors, (912), 449 states have call predecessors, (912), 456 states have call successors, (912) [2021-12-06 19:34:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11635 states to 11635 states and 15367 transitions. [2021-12-06 19:34:49,684 INFO L78 Accepts]: Start accepts. Automaton has 11635 states and 15367 transitions. Word has length 59 [2021-12-06 19:34:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:49,684 INFO L470 AbstractCegarLoop]: Abstraction has 11635 states and 15367 transitions. [2021-12-06 19:34:49,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:34:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 11635 states and 15367 transitions. [2021-12-06 19:34:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:34:49,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:49,685 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:49,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 19:34:49,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-12-06 19:34:49,887 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1427376824, now seen corresponding path program 1 times [2021-12-06 19:34:49,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:49,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756062901] [2021-12-06 19:34:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:49,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:50,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756062901] [2021-12-06 19:34:50,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756062901] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159195066] [2021-12-06 19:34:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:50,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:50,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:50,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:50,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:34:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-06 19:34:50,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:50,416 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:34:50,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:34:50,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:50,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:34:50,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:50,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:34:50,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 19:34:50,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-06 19:34:51,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:51,147 INFO L354 Elim1Store]: treesize reduction 31, result has 20.5 percent of original size [2021-12-06 19:34:51,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 85 treesize of output 45 [2021-12-06 19:34:51,153 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:51,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 19:34:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:51,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:51,305 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |c_ULTIMATE.start_append_one_~list#1.offset|) |c_ULTIMATE.start_append_one_~item~1#1.base|)))) (select .cse0 (select (select .cse0 |c_~#list~0.base|) (+ |c_~#list~0.offset| 4)))) 0) 0) (forall ((v_ArrVal_1878 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_one_~list#1.base| v_ArrVal_1878) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |c_ULTIMATE.start_append_one_~list#1.offset|) |c_ULTIMATE.start_append_one_~item~1#1.base|)) |c_~#list~0.base|) (+ |c_~#list~0.offset| 4))) 0) 0))) is different from false [2021-12-06 19:34:51,320 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:51,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2021-12-06 19:34:51,328 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:51,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 30 [2021-12-06 19:34:51,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:51,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 222 [2021-12-06 19:34:51,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:51,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 266 treesize of output 292 [2021-12-06 19:34:51,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:51,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 164 [2021-12-06 19:34:51,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 122 [2021-12-06 19:34:51,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:51,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:51,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 171 treesize of output 167 [2021-12-06 19:34:53,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159195066] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:53,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:34:53,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-12-06 19:34:53,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093821301] [2021-12-06 19:34:53,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:53,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 19:34:53,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 19:34:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1374, Unknown=1, NotChecked=74, Total=1560 [2021-12-06 19:34:53,277 INFO L87 Difference]: Start difference. First operand 11635 states and 15367 transitions. Second operand has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 29 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:34:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:54,339 INFO L93 Difference]: Finished difference Result 15733 states and 20999 transitions. [2021-12-06 19:34:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 19:34:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 29 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2021-12-06 19:34:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:54,359 INFO L225 Difference]: With dead ends: 15733 [2021-12-06 19:34:54,359 INFO L226 Difference]: Without dead ends: 15733 [2021-12-06 19:34:54,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=365, Invalid=2394, Unknown=1, NotChecked=102, Total=2862 [2021-12-06 19:34:54,360 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 1648 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 3961 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:54,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 3961 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1225 Invalid, 0 Unknown, 286 Unchecked, 0.5s Time] [2021-12-06 19:34:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15733 states. [2021-12-06 19:34:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15733 to 13351. [2021-12-06 19:34:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13351 states, 12141 states have (on average 1.3152952804546578) internal successors, (15969), 12512 states have internal predecessors, (15969), 528 states have call successors, (528), 323 states have call predecessors, (528), 646 states have return successors, (1056), 515 states have call predecessors, (1056), 528 states have call successors, (1056) [2021-12-06 19:34:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13351 states to 13351 states and 17553 transitions. [2021-12-06 19:34:54,531 INFO L78 Accepts]: Start accepts. Automaton has 13351 states and 17553 transitions. Word has length 59 [2021-12-06 19:34:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:54,531 INFO L470 AbstractCegarLoop]: Abstraction has 13351 states and 17553 transitions. [2021-12-06 19:34:54,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 29 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:34:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 13351 states and 17553 transitions. [2021-12-06 19:34:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 19:34:54,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:54,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:54,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 19:34:54,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:54,733 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1978534423, now seen corresponding path program 1 times [2021-12-06 19:34:54,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:54,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790894895] [2021-12-06 19:34:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:54,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 19:34:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:34:54,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:54,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790894895] [2021-12-06 19:34:54,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790894895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:34:54,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:34:54,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:34:54,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776576165] [2021-12-06 19:34:54,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:34:54,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:34:54,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:34:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:34:54,863 INFO L87 Difference]: Start difference. First operand 13351 states and 17553 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:34:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:55,015 INFO L93 Difference]: Finished difference Result 15153 states and 20468 transitions. [2021-12-06 19:34:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:34:55,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2021-12-06 19:34:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:55,031 INFO L225 Difference]: With dead ends: 15153 [2021-12-06 19:34:55,031 INFO L226 Difference]: Without dead ends: 15153 [2021-12-06 19:34:55,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:34:55,031 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 380 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:55,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 402 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:34:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2021-12-06 19:34:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 13349. [2021-12-06 19:34:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13349 states, 12141 states have (on average 1.3113417346182357) internal successors, (15921), 12510 states have internal predecessors, (15921), 528 states have call successors, (528), 323 states have call predecessors, (528), 646 states have return successors, (1056), 515 states have call predecessors, (1056), 528 states have call successors, (1056) [2021-12-06 19:34:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13349 states to 13349 states and 17505 transitions. [2021-12-06 19:34:55,230 INFO L78 Accepts]: Start accepts. Automaton has 13349 states and 17505 transitions. Word has length 60 [2021-12-06 19:34:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:55,230 INFO L470 AbstractCegarLoop]: Abstraction has 13349 states and 17505 transitions. [2021-12-06 19:34:55,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:34:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13349 states and 17505 transitions. [2021-12-06 19:34:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:34:55,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:55,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:55,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-12-06 19:34:55,231 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-06 19:34:55,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:55,232 INFO L85 PathProgramCache]: Analyzing trace with hash 510133039, now seen corresponding path program 1 times [2021-12-06 19:34:55,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:55,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865597559] [2021-12-06 19:34:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:55,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:55,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:55,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865597559] [2021-12-06 19:34:55,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865597559] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:55,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378343241] [2021-12-06 19:34:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:55,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:55,864 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:55,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa53de4c-aa2a-4f8e-b36e-0edf0a2e819c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 19:34:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:55,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 19:34:55,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:56,007 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:34:56,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:34:56,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:56,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:34:56,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:56,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:34:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:56,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:34:56,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:56,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:34:56,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:56,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:34:56,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 19:34:56,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-06 19:34:56,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:56,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-12-06 19:34:56,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:56,751 INFO L354 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2021-12-06 19:34:56,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 22 [2021-12-06 19:34:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:56,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:57,062 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1997 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_one_~list#1.base| v_ArrVal_1997) (let ((.cse0 (* ~unnamed1~0~LIST_BEG 4))) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse0) |c_ULTIMATE.start_create_item_#res#1.base|)) |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse0)))) 4) 0)) (= (select (let ((.cse2 (* ~unnamed1~0~LIST_BEG 4))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse2) |c_ULTIMATE.start_create_item_#res#1.base|)))) (select .cse1 (select (select .cse1 |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse2))))) 4) 0)) is different from false [2021-12-06 19:34:57,068 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (let ((.cse1 (* ~unnamed1~0~LIST_BEG 4))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse1) |c_ULTIMATE.start_create_item_~head~0#1.base|)))) (select .cse0 (select (select .cse0 |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse1))))) 4) 0) (forall ((v_ArrVal_1997 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_one_~list#1.base| v_ArrVal_1997) (let ((.cse2 (* ~unnamed1~0~LIST_BEG 4))) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse2) |c_ULTIMATE.start_create_item_~head~0#1.base|)) |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse2)))) 4) 0))) is different from false [2021-12-06 19:34:57,075 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1993 (Array Int Int))) (= (select (let ((.cse1 (* ~unnamed1~0~LIST_BEG 4))) (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1993))) (store .cse2 |c_ULTIMATE.start_append_one_~list#1.base| (store (select .cse2 |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse1) |c_ULTIMATE.start_create_item_~head~0#1.base|))))) (select .cse0 (select (select .cse0 |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse1))))) 4) 0)) (forall ((v_ArrVal_1997 (Array Int Int)) (v_ArrVal_1994 (Array Int Int)) (v_ArrVal_1993 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1994) |c_ULTIMATE.start_append_one_~list#1.base| v_ArrVal_1997) (let ((.cse4 (* ~unnamed1~0~LIST_BEG 4))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1993))) (store .cse3 |c_ULTIMATE.start_append_one_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse4) |c_ULTIMATE.start_create_item_~head~0#1.base|))) |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse4)))) 4) 0))) is different from false [2021-12-06 19:34:57,087 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1997 (Array Int Int)) (v_ArrVal_1994 (Array Int Int)) (v_ArrVal_1993 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1994) |c_ULTIMATE.start_append_one_~list#1.base| v_ArrVal_1997) (let ((.cse1 (* ~unnamed1~0~LIST_BEG 4))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1993))) (store .cse0 |c_ULTIMATE.start_append_one_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse1) |c_ULTIMATE.start_create_item_~item~0#1.base|))) |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse1)))) 4) 0)) (forall ((v_ArrVal_1993 (Array Int Int))) (= (select (let ((.cse3 (* ~unnamed1~0~LIST_BEG 4))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1993))) (store .cse4 |c_ULTIMATE.start_append_one_~list#1.base| (store (select .cse4 |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse3) |c_ULTIMATE.start_create_item_~item~0#1.base|))))) (select .cse2 (select (select .cse2 |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse3))))) 4) 0))) is different from false [2021-12-06 19:34:57,099 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1997 (Array Int Int)) (v_ArrVal_1990 Int) (v_ArrVal_1992 Int) (v_ArrVal_1994 (Array Int Int)) (v_ArrVal_1993 (Array Int Int))) (= (select (let ((.cse0 (+ |c_ULTIMATE.start_create_item_~item~0#1.offset| 8))) (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse0 v_ArrVal_1992)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1994) |c_ULTIMATE.start_append_one_~list#1.base| v_ArrVal_1997) (let ((.cse2 (* ~unnamed1~0~LIST_BEG 4))) (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse0 v_ArrVal_1990)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1993))) (store .cse1 |c_ULTIMATE.start_append_one_~list#1.base| (store (select .cse1 |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse2) |c_ULTIMATE.start_create_item_~item~0#1.base|))) |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse2))))) 4) 0)) (forall ((v_ArrVal_1990 Int) (v_ArrVal_1993 (Array Int Int))) (= (select (let ((.cse4 (* ~unnamed1~0~LIST_BEG 4))) (let ((.cse3 (let ((.cse5 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_item_~item~0#1.base|) (+ |c_ULTIMATE.start_create_item_~item~0#1.offset| 8) v_ArrVal_1990)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1993))) (store .cse5 |c_ULTIMATE.start_append_one_~list#1.base| (store (select .cse5 |c_ULTIMATE.start_append_one_~list#1.base|) (+ |c_ULTIMATE.start_append_one_~list#1.offset| .cse4) |c_ULTIMATE.start_create_item_~item~0#1.base|))))) (select .cse3 (select (select .cse3 |c_~#list~0.base|) (+ |c_~#list~0.offset| .cse4))))) 4) 0))) is different from false [2021-12-06 19:34:57,127 INFO L354 Elim1Store]: treesize reduction 26, result has 53.6 percent of original size [2021-12-06 19:34:57,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 86 [2021-12-06 19:34:57,139 INFO L354 Elim1Store]: treesize reduction 26, result has 53.6 percent of original size [2021-12-06 19:34:57,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 69 [2021-12-06 19:34:57,151 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:57,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 545 treesize of output 551 [2021-12-06 19:34:57,214 INFO L354 Elim1Store]: treesize reduction 75, result has 71.3 percent of original size [2021-12-06 19:34:57,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3497 treesize of output 3322 [2021-12-06 19:34:57,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3126 treesize of output 3078 [2021-12-06 19:34:57,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3078 treesize of output 2982 [2021-12-06 19:34:57,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4388 treesize of output 3884