/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 18:09:38,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 18:09:38,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 18:09:38,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 18:09:38,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 18:09:38,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 18:09:38,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 18:09:38,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 18:09:38,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 18:09:38,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 18:09:38,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 18:09:38,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 18:09:38,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 18:09:38,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 18:09:38,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 18:09:38,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 18:09:38,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 18:09:38,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 18:09:38,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 18:09:38,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 18:09:38,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 18:09:38,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 18:09:38,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 18:09:38,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 18:09:38,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 18:09:38,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 18:09:38,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 18:09:38,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 18:09:38,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 18:09:39,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 18:09:39,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 18:09:39,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 18:09:39,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 18:09:39,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 18:09:39,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 18:09:39,037 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 18:09:39,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 18:09:39,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 18:09:39,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 18:09:39,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 18:09:39,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 18:09:39,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 18:09:39,040 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 18:09:39,040 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 18:09:39,040 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 18:09:39,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 18:09:39,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 18:09:39,041 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 18:09:39,041 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 18:09:39,041 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 18:09:39,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 18:09:39,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 18:09:39,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 18:09:39,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 18:09:39,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:09:39,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 18:09:39,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 18:09:39,043 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 18:09:39,043 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 18:09:39,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 18:09:39,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 18:09:39,044 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 18:09:39,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 18:09:39,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 18:09:39,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 18:09:39,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 18:09:39,473 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 18:09:39,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-08 18:09:39,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06e7efb7c/3354ec99ce324ae3b8b64ba6c8ef6e04/FLAG6657df221 [2021-10-08 18:09:40,152 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 18:09:40,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-08 18:09:40,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06e7efb7c/3354ec99ce324ae3b8b64ba6c8ef6e04/FLAG6657df221 [2021-10-08 18:09:40,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06e7efb7c/3354ec99ce324ae3b8b64ba6c8ef6e04 [2021-10-08 18:09:40,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 18:09:40,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 18:09:40,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 18:09:40,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 18:09:40,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 18:09:40,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be2eef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40, skipping insertion in model container [2021-10-08 18:09:40,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 18:09:40,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:09:40,767 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2656,2669] [2021-10-08 18:09:40,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:09:40,793 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 18:09:40,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:09:40,819 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2656,2669] [2021-10-08 18:09:40,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:09:40,832 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:09:40,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2656,2669] [2021-10-08 18:09:40,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:09:40,889 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:09:40,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40 WrapperNode [2021-10-08 18:09:40,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:09:40,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:09:40,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:09:40,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:09:40,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:09:40,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:09:40,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:09:40,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:09:40,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:40,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:41,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:09:41,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:09:41,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:09:41,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:09:41,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (1/1) ... [2021-10-08 18:09:41,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:09:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:09:41,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 18:09:41,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 18:09:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:09:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:09:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:09:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:09:41,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:09:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:09:41,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:09:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 18:09:41,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 18:09:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 18:09:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 18:09:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 18:09:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:09:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:09:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:09:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:09:41,126 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 18:09:42,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:09:42,876 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-08 18:09:42,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:09:42 BoogieIcfgContainer [2021-10-08 18:09:42,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:09:42,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:09:42,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:09:42,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:09:42,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 06:09:40" (1/3) ... [2021-10-08 18:09:42,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c2bf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:09:42, skipping insertion in model container [2021-10-08 18:09:42,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:09:40" (2/3) ... [2021-10-08 18:09:42,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c2bf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:09:42, skipping insertion in model container [2021-10-08 18:09:42,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:09:42" (3/3) ... [2021-10-08 18:09:42,887 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-10-08 18:09:42,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:09:42,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-10-08 18:09:42,894 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:09:42,935 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,938 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,938 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,938 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,939 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,939 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,940 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,940 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,940 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,940 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,940 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,940 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,941 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,941 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,945 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,948 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,948 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,949 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,949 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,949 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,949 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,949 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,950 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,952 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,952 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,953 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,953 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,953 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,953 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,953 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,954 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,954 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,954 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,954 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,956 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,956 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,957 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,957 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,957 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,957 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,957 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,958 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,959 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,959 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,959 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,959 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,960 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,960 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,960 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,960 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,960 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,960 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,961 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,961 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,961 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,961 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,961 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,962 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,963 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,963 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,963 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,963 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,964 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,965 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,965 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,965 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,965 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,965 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,966 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,966 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,966 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,966 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,966 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,966 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,967 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,967 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,967 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,967 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,967 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,968 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,969 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,969 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,969 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,969 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,970 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,970 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,970 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,970 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,970 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,970 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,971 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,971 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,971 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,972 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,972 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,972 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,972 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,972 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,972 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,973 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,973 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,973 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,973 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,973 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,974 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,974 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,974 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,974 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,974 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,975 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,975 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,975 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,975 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,975 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,976 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,976 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,976 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,976 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,976 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,976 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,977 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,977 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,977 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,977 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,977 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,978 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,979 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,979 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,980 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,984 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,985 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,985 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,986 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,993 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:42,996 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:09:43,002 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 18:09:43,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:09:43,054 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, mConcurrency=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 [2021-10-08 18:09:43,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-10-08 18:09:43,078 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:09:43,090 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 305 transitions, 634 flow [2021-10-08 18:09:43,093 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 305 transitions, 634 flow [2021-10-08 18:09:43,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 305 transitions, 634 flow [2021-10-08 18:09:43,233 INFO L129 PetriNetUnfolder]: 26/302 cut-off events. [2021-10-08 18:09:43,234 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 18:09:43,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 26/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 445 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2021-10-08 18:09:43,258 INFO L116 LiptonReduction]: Number of co-enabled transitions 5962 [2021-10-08 18:10:52,301 INFO L131 LiptonReduction]: Checked pairs total: 11895 [2021-10-08 18:10:52,302 INFO L133 LiptonReduction]: Total number of compositions: 366 [2021-10-08 18:10:52,320 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 86 transitions, 196 flow [2021-10-08 18:10:52,559 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5480 states, 4294 states have (on average 5.011877037727061) internal successors, (21521), 5479 states have internal predecessors, (21521), 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) [2021-10-08 18:10:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 5480 states, 4294 states have (on average 5.011877037727061) internal successors, (21521), 5479 states have internal predecessors, (21521), 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) [2021-10-08 18:10:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 18:10:52,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:52,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 18:10:52,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:10:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:52,596 INFO L82 PathProgramCache]: Analyzing trace with hash 39942, now seen corresponding path program 1 times [2021-10-08 18:10:52,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:52,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117768661] [2021-10-08 18:10:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:10:52,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:52,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:52,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:52,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 18:10:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:10:52,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:10:52,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:52,925 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:10:52,926 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 18:10:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:52,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:53,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:53,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117768661] [2021-10-08 18:10:53,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117768661] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:10:53,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:10:53,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:10:53,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847460145] [2021-10-08 18:10:53,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:10:53,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:10:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:10:53,049 INFO L87 Difference]: Start difference. First operand has 5480 states, 4294 states have (on average 5.011877037727061) internal successors, (21521), 5479 states have internal predecessors, (21521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-08 18:10:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:53,505 INFO L93 Difference]: Finished difference Result 3216 states and 12825 transitions. [2021-10-08 18:10:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:10:53,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-08 18:10:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:53,584 INFO L225 Difference]: With dead ends: 3216 [2021-10-08 18:10:53,584 INFO L226 Difference]: Without dead ends: 3216 [2021-10-08 18:10:53,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:10:53,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2021-10-08 18:10:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3216. [2021-10-08 18:10:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 2764 states have (on average 4.640014471780029) internal successors, (12825), 3215 states have internal predecessors, (12825), 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) [2021-10-08 18:10:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 12825 transitions. [2021-10-08 18:10:53,936 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 12825 transitions. Word has length 2 [2021-10-08 18:10:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:53,937 INFO L470 AbstractCegarLoop]: Abstraction has 3216 states and 12825 transitions. [2021-10-08 18:10:53,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-08 18:10:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 12825 transitions. [2021-10-08 18:10:53,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 18:10:53,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:53,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 18:10:53,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 18:10:54,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:54,140 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:10:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:54,142 INFO L82 PathProgramCache]: Analyzing trace with hash 39940, now seen corresponding path program 1 times [2021-10-08 18:10:54,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:54,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109430491] [2021-10-08 18:10:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:10:54,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:54,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:54,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:54,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 18:10:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:10:54,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:10:54,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:54,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:10:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:10:54,628 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:10:54,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:10:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:54,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:54,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:54,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109430491] [2021-10-08 18:10:54,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109430491] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:10:54,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:10:54,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:10:54,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739648713] [2021-10-08 18:10:54,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:10:54,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:54,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:10:54,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:10:54,867 INFO L87 Difference]: Start difference. First operand 3216 states and 12825 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-08 18:10:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:56,122 INFO L93 Difference]: Finished difference Result 6431 states and 25658 transitions. [2021-10-08 18:10:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:10:56,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 2 [2021-10-08 18:10:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:56,204 INFO L225 Difference]: With dead ends: 6431 [2021-10-08 18:10:56,204 INFO L226 Difference]: Without dead ends: 6431 [2021-10-08 18:10:56,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:10:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6431 states. [2021-10-08 18:10:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6431 to 3222. [2021-10-08 18:10:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2770 states have (on average 4.6386281588447655) internal successors, (12849), 3221 states have internal predecessors, (12849), 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) [2021-10-08 18:10:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 12849 transitions. [2021-10-08 18:10:56,459 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 12849 transitions. Word has length 2 [2021-10-08 18:10:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:56,459 INFO L470 AbstractCegarLoop]: Abstraction has 3222 states and 12849 transitions. [2021-10-08 18:10:56,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-08 18:10:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 12849 transitions. [2021-10-08 18:10:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 18:10:56,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:56,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 18:10:56,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:56,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:56,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:10:56,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:56,675 INFO L82 PathProgramCache]: Analyzing trace with hash 38690523, now seen corresponding path program 1 times [2021-10-08 18:10:56,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:56,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428081403] [2021-10-08 18:10:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:10:56,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:56,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:56,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:56,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 18:10:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:10:56,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:10:56,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:56,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:56,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:56,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428081403] [2021-10-08 18:10:56,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428081403] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:10:56,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:10:56,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 18:10:56,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891158443] [2021-10-08 18:10:56,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:10:56,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:10:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:10:56,824 INFO L87 Difference]: Start difference. First operand 3222 states and 12849 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-10-08 18:10:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:57,087 INFO L93 Difference]: Finished difference Result 3222 states and 12848 transitions. [2021-10-08 18:10:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:10:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 4 [2021-10-08 18:10:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:57,123 INFO L225 Difference]: With dead ends: 3222 [2021-10-08 18:10:57,123 INFO L226 Difference]: Without dead ends: 3222 [2021-10-08 18:10:57,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:10:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2021-10-08 18:10:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3222. [2021-10-08 18:10:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2770 states have (on average 4.638267148014441) internal successors, (12848), 3221 states have internal predecessors, (12848), 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) [2021-10-08 18:10:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 12848 transitions. [2021-10-08 18:10:57,347 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 12848 transitions. Word has length 4 [2021-10-08 18:10:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:57,347 INFO L470 AbstractCegarLoop]: Abstraction has 3222 states and 12848 transitions. [2021-10-08 18:10:57,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-10-08 18:10:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 12848 transitions. [2021-10-08 18:10:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 18:10:57,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:57,348 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 18:10:57,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:57,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:57,561 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:10:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:57,563 INFO L82 PathProgramCache]: Analyzing trace with hash 38627748, now seen corresponding path program 1 times [2021-10-08 18:10:57,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:57,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559555904] [2021-10-08 18:10:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:10:57,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:57,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:57,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:57,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 18:10:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:10:57,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:10:57,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:57,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:10:57,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:10:57,925 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:10:57,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:10:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:58,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:58,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:58,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559555904] [2021-10-08 18:10:58,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559555904] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:58,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:58,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 18:10:58,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654703977] [2021-10-08 18:10:58,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:10:58,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:10:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:10:58,640 INFO L87 Difference]: Start difference. First operand 3222 states and 12848 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-10-08 18:11:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:08,887 INFO L93 Difference]: Finished difference Result 16068 states and 64122 transitions. [2021-10-08 18:11:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:11:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 4 [2021-10-08 18:11:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:09,028 INFO L225 Difference]: With dead ends: 16068 [2021-10-08 18:11:09,028 INFO L226 Difference]: Without dead ends: 16068 [2021-10-08 18:11:09,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 874.7ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:11:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16068 states. [2021-10-08 18:11:09,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16068 to 3232. [2021-10-08 18:11:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 2780 states have (on average 4.635251798561151) internal successors, (12886), 3231 states have internal predecessors, (12886), 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) [2021-10-08 18:11:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 12886 transitions. [2021-10-08 18:11:09,525 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 12886 transitions. Word has length 4 [2021-10-08 18:11:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:09,526 INFO L470 AbstractCegarLoop]: Abstraction has 3232 states and 12886 transitions. [2021-10-08 18:11:09,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-10-08 18:11:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 12886 transitions. [2021-10-08 18:11:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:11:09,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:09,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:11:09,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:09,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:09,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:11:09,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:09,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1197530632, now seen corresponding path program 1 times [2021-10-08 18:11:09,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:09,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199698298] [2021-10-08 18:11:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:11:09,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:09,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:09,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 18:11:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:09,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:11:09,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:09,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:10,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:10,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199698298] [2021-10-08 18:11:10,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199698298] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:10,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:10,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 18:11:10,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788698785] [2021-10-08 18:11:10,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:11:10,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:11:10,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:11:10,022 INFO L87 Difference]: Start difference. First operand 3232 states and 12886 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2021-10-08 18:11:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:11,505 INFO L93 Difference]: Finished difference Result 12863 states and 51317 transitions. [2021-10-08 18:11:11,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:11:11,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 5 [2021-10-08 18:11:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:11,712 INFO L225 Difference]: With dead ends: 12863 [2021-10-08 18:11:11,712 INFO L226 Difference]: Without dead ends: 12863 [2021-10-08 18:11:11,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 196.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:11:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12863 states. [2021-10-08 18:11:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12863 to 3234. [2021-10-08 18:11:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 2782 states have (on average 4.632638389647735) internal successors, (12888), 3233 states have internal predecessors, (12888), 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) [2021-10-08 18:11:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 12888 transitions. [2021-10-08 18:11:12,062 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 12888 transitions. Word has length 5 [2021-10-08 18:11:12,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:12,063 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 12888 transitions. [2021-10-08 18:11:12,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2021-10-08 18:11:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 12888 transitions. [2021-10-08 18:11:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:11:12,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:12,064 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:12,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-08 18:11:12,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:12,292 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:11:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:12,292 INFO L82 PathProgramCache]: Analyzing trace with hash -227476425, now seen corresponding path program 1 times [2021-10-08 18:11:12,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:12,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521778510] [2021-10-08 18:11:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:11:12,293 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:12,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:12,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:12,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 18:11:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:12,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:11:12,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:12,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:11:12,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:11:12,826 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:11:12,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:11:12,927 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:11:12,928 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:11:13,287 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:11:13,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 34 treesize of output 36 [2021-10-08 18:11:13,303 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 18:11:13,303 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 33 treesize of output 33 [2021-10-08 18:11:14,080 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 18:11:14,081 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 3 case distinctions, treesize of input 34 treesize of output 43 [2021-10-08 18:11:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:14,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:14,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:14,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521778510] [2021-10-08 18:11:14,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521778510] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:14,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:14,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 18:11:14,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515267937] [2021-10-08 18:11:14,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:11:14,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:11:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:11:14,994 INFO L87 Difference]: Start difference. First operand 3234 states and 12888 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 18:11:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:34,804 INFO L93 Difference]: Finished difference Result 19293 states and 76991 transitions. [2021-10-08 18:11:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:11:34,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 [2021-10-08 18:11:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:34,944 INFO L225 Difference]: With dead ends: 19293 [2021-10-08 18:11:34,944 INFO L226 Difference]: Without dead ends: 19293 [2021-10-08 18:11:34,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 10869.0ms TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:11:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19293 states. [2021-10-08 18:11:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19293 to 3249. [2021-10-08 18:11:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 2797 states have (on average 4.628173042545584) internal successors, (12945), 3248 states have internal predecessors, (12945), 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) [2021-10-08 18:11:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 12945 transitions. [2021-10-08 18:11:35,491 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 12945 transitions. Word has length 7 [2021-10-08 18:11:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:35,493 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 12945 transitions. [2021-10-08 18:11:35,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 18:11:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 12945 transitions. [2021-10-08 18:11:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:11:35,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:35,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:35,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:35,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:35,710 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:11:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:35,711 INFO L82 PathProgramCache]: Analyzing trace with hash -227476424, now seen corresponding path program 1 times [2021-10-08 18:11:35,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:35,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502017542] [2021-10-08 18:11:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:11:35,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:35,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:35,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:35,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 18:11:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:35,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:11:35,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:35,934 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 8 treesize of output 7 [2021-10-08 18:11:36,005 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:11:36,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 25 [2021-10-08 18:11:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:36,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:36,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:36,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502017542] [2021-10-08 18:11:36,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502017542] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:36,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:36,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 18:11:36,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560103030] [2021-10-08 18:11:36,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:11:36,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:36,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:11:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:11:36,480 INFO L87 Difference]: Start difference. First operand 3249 states and 12945 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 18:11:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:41,024 INFO L93 Difference]: Finished difference Result 12875 states and 51366 transitions. [2021-10-08 18:11:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:11:41,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 [2021-10-08 18:11:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:41,172 INFO L225 Difference]: With dead ends: 12875 [2021-10-08 18:11:41,172 INFO L226 Difference]: Without dead ends: 12875 [2021-10-08 18:11:41,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1611.2ms TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:11:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12875 states. [2021-10-08 18:11:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12875 to 3249. [2021-10-08 18:11:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 2798 states have (on average 4.621872766261616) internal successors, (12932), 3248 states have internal predecessors, (12932), 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) [2021-10-08 18:11:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 12932 transitions. [2021-10-08 18:11:41,385 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 12932 transitions. Word has length 7 [2021-10-08 18:11:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:41,385 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 12932 transitions. [2021-10-08 18:11:41,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 18:11:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 12932 transitions. [2021-10-08 18:11:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:11:41,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:41,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:41,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:41,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:41,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:11:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:41,605 INFO L82 PathProgramCache]: Analyzing trace with hash -227476423, now seen corresponding path program 1 times [2021-10-08 18:11:41,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:41,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602051358] [2021-10-08 18:11:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:11:41,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:41,607 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:41,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 18:11:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:41,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:11:41,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:41,873 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:11:41,874 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 18:11:41,933 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 18:11:41,934 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 23 treesize of output 30 [2021-10-08 18:11:42,037 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-08 18:11:42,038 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 3 case distinctions, treesize of input 36 treesize of output 47 [2021-10-08 18:11:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:11:42,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:11:44,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:44,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602051358] [2021-10-08 18:11:44,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602051358] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:11:44,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:11:44,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 18:11:44,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998330527] [2021-10-08 18:11:44,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:11:44,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:11:44,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-10-08 18:11:44,267 INFO L87 Difference]: Start difference. First operand 3249 states and 12932 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-08 18:11:44,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:44,671 INFO L93 Difference]: Finished difference Result 2640 states and 10506 transitions. [2021-10-08 18:11:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:11:44,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 [2021-10-08 18:11:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:44,679 INFO L225 Difference]: With dead ends: 2640 [2021-10-08 18:11:44,679 INFO L226 Difference]: Without dead ends: 2640 [2021-10-08 18:11:44,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2163.2ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-08 18:11:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-10-08 18:11:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2640. [2021-10-08 18:11:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2319 states have (on average 4.530401034928849) internal successors, (10506), 2639 states have internal predecessors, (10506), 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) [2021-10-08 18:11:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 10506 transitions. [2021-10-08 18:11:44,816 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 10506 transitions. Word has length 7 [2021-10-08 18:11:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:44,816 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 10506 transitions. [2021-10-08 18:11:44,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-08 18:11:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 10506 transitions. [2021-10-08 18:11:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:11:44,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:44,817 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:44,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:45,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:45,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:11:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:45,029 INFO L82 PathProgramCache]: Analyzing trace with hash -227476422, now seen corresponding path program 1 times [2021-10-08 18:11:45,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:45,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830462630] [2021-10-08 18:11:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:11:45,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:45,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:45,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:45,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 18:11:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:45,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:11:45,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:45,238 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 [2021-10-08 18:11:45,280 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 18:11:45,280 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 28 [2021-10-08 18:11:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:11:45,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:11:47,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:47,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830462630] [2021-10-08 18:11:47,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830462630] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:11:47,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:11:47,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 18:11:47,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400246238] [2021-10-08 18:11:47,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:11:47,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:11:47,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-10-08 18:11:47,411 INFO L87 Difference]: Start difference. First operand 2640 states and 10506 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-10-08 18:11:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:47,831 INFO L93 Difference]: Finished difference Result 2095 states and 8330 transitions. [2021-10-08 18:11:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:11:47,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 [2021-10-08 18:11:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:47,840 INFO L225 Difference]: With dead ends: 2095 [2021-10-08 18:11:47,840 INFO L226 Difference]: Without dead ends: 2095 [2021-10-08 18:11:47,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2063.9ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-08 18:11:47,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2021-10-08 18:11:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2095. [2021-10-08 18:11:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 1882 states have (on average 4.426142401700319) internal successors, (8330), 2094 states have internal predecessors, (8330), 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) [2021-10-08 18:11:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 8330 transitions. [2021-10-08 18:11:47,916 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 8330 transitions. Word has length 7 [2021-10-08 18:11:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:47,917 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 8330 transitions. [2021-10-08 18:11:47,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-10-08 18:11:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 8330 transitions. [2021-10-08 18:11:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:11:47,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:47,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:47,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:48,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:48,134 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:11:48,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash -227476387, now seen corresponding path program 1 times [2021-10-08 18:11:48,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:48,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899631881] [2021-10-08 18:11:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:11:48,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:48,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:48,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:48,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:11:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:11:48,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:48,391 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-08 18:11:48,391 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 6 case distinctions, treesize of input 44 treesize of output 54 [2021-10-08 18:11:48,594 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-08 18:11:48,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 77 [2021-10-08 18:11:48,958 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-08 18:11:48,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 116 [2021-10-08 18:11:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:11:49,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:11:49,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:49,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899631881] [2021-10-08 18:11:49,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899631881] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:11:49,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:11:49,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 18:11:49,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722781990] [2021-10-08 18:11:49,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:11:49,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:11:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:11:49,630 INFO L87 Difference]: Start difference. First operand 2095 states and 8330 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-08 18:11:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:50,263 INFO L93 Difference]: Finished difference Result 1702 states and 6540 transitions. [2021-10-08 18:11:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:11:50,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 [2021-10-08 18:11:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:50,269 INFO L225 Difference]: With dead ends: 1702 [2021-10-08 18:11:50,269 INFO L226 Difference]: Without dead ends: 1702 [2021-10-08 18:11:50,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 428.9ms TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:11:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-10-08 18:11:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2021-10-08 18:11:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1535 states have (on average 4.260586319218241) internal successors, (6540), 1701 states have internal predecessors, (6540), 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) [2021-10-08 18:11:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 6540 transitions. [2021-10-08 18:11:50,317 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 6540 transitions. Word has length 7 [2021-10-08 18:11:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:50,317 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 6540 transitions. [2021-10-08 18:11:50,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-08 18:11:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 6540 transitions. [2021-10-08 18:11:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:11:50,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:50,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:50,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:50,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:50,532 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:11:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:50,533 INFO L82 PathProgramCache]: Analyzing trace with hash -227476385, now seen corresponding path program 1 times [2021-10-08 18:11:50,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:50,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214315866] [2021-10-08 18:11:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:11:50,535 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:50,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:50,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:50,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:11:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:50,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 18:11:50,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:50,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:11:50,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:11:51,115 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:11:51,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 114 [2021-10-08 18:11:51,209 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-08 18:11:51,210 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 6 case distinctions, treesize of input 117 treesize of output 127 [2021-10-08 18:11:52,995 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-08 18:11:52,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 115 [2021-10-08 18:11:53,116 INFO L354 Elim1Store]: treesize reduction 108, result has 31.2 percent of original size [2021-10-08 18:11:53,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 103 treesize of output 140 [2021-10-08 18:11:53,979 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-08 18:11:53,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 140 [2021-10-08 18:11:54,045 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 18:11:54,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 128 treesize of output 134 [2021-10-08 18:11:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:55,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:57,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:57,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214315866] [2021-10-08 18:11:57,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214315866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:57,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:57,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 18:11:57,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856965605] [2021-10-08 18:11:57,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:11:57,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:57,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:11:57,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2021-10-08 18:11:57,972 INFO L87 Difference]: Start difference. First operand 1702 states and 6540 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 18:12:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:10,379 INFO L93 Difference]: Finished difference Result 2578 states and 9427 transitions. [2021-10-08 18:12:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:12:10,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 [2021-10-08 18:12:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:10,390 INFO L225 Difference]: With dead ends: 2578 [2021-10-08 18:12:10,391 INFO L226 Difference]: Without dead ends: 2578 [2021-10-08 18:12:10,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 12574.0ms TimeCoverageRelationStatistics Valid=87, Invalid=151, Unknown=2, NotChecked=0, Total=240 [2021-10-08 18:12:10,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-10-08 18:12:10,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1309. [2021-10-08 18:12:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1188 states have (on average 3.9983164983164983) internal successors, (4750), 1308 states have internal predecessors, (4750), 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) [2021-10-08 18:12:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 4750 transitions. [2021-10-08 18:12:10,444 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 4750 transitions. Word has length 7 [2021-10-08 18:12:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:10,444 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 4750 transitions. [2021-10-08 18:12:10,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 18:12:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 4750 transitions. [2021-10-08 18:12:10,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 18:12:10,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:10,445 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-08 18:12:10,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:10,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:10,660 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:12:10,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:10,661 INFO L82 PathProgramCache]: Analyzing trace with hash -225817372, now seen corresponding path program 2 times [2021-10-08 18:12:10,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:10,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631431746] [2021-10-08 18:12:10,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:12:10,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:10,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:10,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:10,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 18:12:10,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:12:10,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:10,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:12:10,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:10,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:12:10,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:12:11,128 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:12:11,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:12:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:11,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:13,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:13,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631431746] [2021-10-08 18:12:13,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631431746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:13,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:13,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:12:13,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900308031] [2021-10-08 18:12:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:12:13,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:12:13,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:12:13,436 INFO L87 Difference]: Start difference. First operand 1309 states and 4750 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-08 18:12:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:49,899 INFO L93 Difference]: Finished difference Result 10212 states and 37533 transitions. [2021-10-08 18:12:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:12:49,906 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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 8 [2021-10-08 18:12:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:49,951 INFO L225 Difference]: With dead ends: 10212 [2021-10-08 18:12:49,951 INFO L226 Difference]: Without dead ends: 10212 [2021-10-08 18:12:49,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6045.9ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:12:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10212 states. [2021-10-08 18:12:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10212 to 1335. [2021-10-08 18:12:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1214 states have (on average 3.960461285008237) internal successors, (4808), 1334 states have internal predecessors, (4808), 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) [2021-10-08 18:12:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 4808 transitions. [2021-10-08 18:12:50,158 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 4808 transitions. Word has length 8 [2021-10-08 18:12:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:50,158 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 4808 transitions. [2021-10-08 18:12:50,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-08 18:12:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 4808 transitions. [2021-10-08 18:12:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 18:12:50,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:50,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:50,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:50,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:50,369 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:12:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:50,370 INFO L82 PathProgramCache]: Analyzing trace with hash 438552923, now seen corresponding path program 1 times [2021-10-08 18:12:50,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:50,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394266645] [2021-10-08 18:12:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:12:50,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:50,373 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:50,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 18:12:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:12:50,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 18:12:50,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:50,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:12:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:12:50,945 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:12:50,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:12:50,958 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 91 treesize of output 89 [2021-10-08 18:12:52,128 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-08 18:12:52,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 62 [2021-10-08 18:12:52,671 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-08 18:12:52,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 53 treesize of output 67 [2021-10-08 18:12:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:12:53,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:12:54,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:54,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394266645] [2021-10-08 18:12:54,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394266645] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:54,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:54,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 18:12:54,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122941133] [2021-10-08 18:12:54,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:12:54,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:12:54,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:12:54,287 INFO L87 Difference]: Start difference. First operand 1335 states and 4808 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2021-10-08 18:13:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:00,813 INFO L93 Difference]: Finished difference Result 3701 states and 13623 transitions. [2021-10-08 18:13:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:13:00,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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 9 [2021-10-08 18:13:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:00,826 INFO L225 Difference]: With dead ends: 3701 [2021-10-08 18:13:00,827 INFO L226 Difference]: Without dead ends: 3701 [2021-10-08 18:13:00,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 4253.4ms TimeCoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:13:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2021-10-08 18:13:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 1278. [2021-10-08 18:13:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1175 states have (on average 3.9395744680851066) internal successors, (4629), 1277 states have internal predecessors, (4629), 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) [2021-10-08 18:13:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4629 transitions. [2021-10-08 18:13:00,885 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4629 transitions. Word has length 9 [2021-10-08 18:13:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:00,886 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 4629 transitions. [2021-10-08 18:13:00,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2021-10-08 18:13:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4629 transitions. [2021-10-08 18:13:00,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 18:13:00,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:00,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:00,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:01,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:01,088 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:01,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:01,088 INFO L82 PathProgramCache]: Analyzing trace with hash 438552924, now seen corresponding path program 1 times [2021-10-08 18:13:01,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:01,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605626175] [2021-10-08 18:13:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:01,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:01,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:01,091 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:01,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 18:13:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:01,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:13:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:01,576 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:13:01,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-08 18:13:01,763 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-08 18:13:01,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 73 [2021-10-08 18:13:02,050 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-08 18:13:02,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 116 [2021-10-08 18:13:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:13:02,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:13:02,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:02,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605626175] [2021-10-08 18:13:02,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605626175] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:02,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:02,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-08 18:13:02,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283298257] [2021-10-08 18:13:02,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:02,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:02,982 INFO L87 Difference]: Start difference. First operand 1278 states and 4629 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2021-10-08 18:13:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:03,531 INFO L93 Difference]: Finished difference Result 1221 states and 4450 transitions. [2021-10-08 18:13:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:13:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 9 [2021-10-08 18:13:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:03,536 INFO L225 Difference]: With dead ends: 1221 [2021-10-08 18:13:03,536 INFO L226 Difference]: Without dead ends: 1221 [2021-10-08 18:13:03,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 438.7ms TimeCoverageRelationStatistics Valid=51, Invalid=59, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:13:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2021-10-08 18:13:03,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2021-10-08 18:13:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1136 states have (on average 3.9172535211267605) internal successors, (4450), 1220 states have internal predecessors, (4450), 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) [2021-10-08 18:13:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 4450 transitions. [2021-10-08 18:13:03,565 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 4450 transitions. Word has length 9 [2021-10-08 18:13:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:03,565 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 4450 transitions. [2021-10-08 18:13:03,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2021-10-08 18:13:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 4450 transitions. [2021-10-08 18:13:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 18:13:03,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:03,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:03,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:03,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:03,782 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:03,783 INFO L82 PathProgramCache]: Analyzing trace with hash 710228505, now seen corresponding path program 1 times [2021-10-08 18:13:03,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:03,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987825569] [2021-10-08 18:13:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:03,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:03,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:03,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:03,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 18:13:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:04,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:13:04,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:04,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:04,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:04,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987825569] [2021-10-08 18:13:04,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987825569] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:04,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:04,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 18:13:04,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937146826] [2021-10-08 18:13:04,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:04,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:04,298 INFO L87 Difference]: Start difference. First operand 1221 states and 4450 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2021-10-08 18:13:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:06,158 INFO L93 Difference]: Finished difference Result 2250 states and 7728 transitions. [2021-10-08 18:13:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 18:13:06,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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 [2021-10-08 18:13:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:06,165 INFO L225 Difference]: With dead ends: 2250 [2021-10-08 18:13:06,165 INFO L226 Difference]: Without dead ends: 2250 [2021-10-08 18:13:06,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 291.8ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:13:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-10-08 18:13:06,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1478. [2021-10-08 18:13:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1393 states have (on average 3.8542713567839195) internal successors, (5369), 1477 states have internal predecessors, (5369), 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) [2021-10-08 18:13:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5369 transitions. [2021-10-08 18:13:06,209 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5369 transitions. Word has length 10 [2021-10-08 18:13:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:06,210 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 5369 transitions. [2021-10-08 18:13:06,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2021-10-08 18:13:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5369 transitions. [2021-10-08 18:13:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 18:13:06,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:06,211 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:06,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:06,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:06,426 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:06,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2089985930, now seen corresponding path program 2 times [2021-10-08 18:13:06,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:06,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950791498] [2021-10-08 18:13:06,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:13:06,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:06,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:06,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:06,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 18:13:06,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:13:06,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:06,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:13:06,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:06,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:13:06,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:13:06,879 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:13:06,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:13:06,970 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:13:06,971 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:13:07,177 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:13:07,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 35 [2021-10-08 18:13:07,191 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 18:13:07,192 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 32 treesize of output 32 [2021-10-08 18:13:07,358 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 18:13:07,358 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 3 case distinctions, treesize of input 33 treesize of output 42 [2021-10-08 18:13:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:13:08,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:13:09,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:09,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950791498] [2021-10-08 18:13:09,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950791498] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:09,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:09,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 18:13:09,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527675237] [2021-10-08 18:13:09,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:13:09,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:13:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:13:09,466 INFO L87 Difference]: Start difference. First operand 1478 states and 5369 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-08 18:13:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:10,035 INFO L93 Difference]: Finished difference Result 1477 states and 5359 transitions. [2021-10-08 18:13:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:13:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 [2021-10-08 18:13:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:10,041 INFO L225 Difference]: With dead ends: 1477 [2021-10-08 18:13:10,041 INFO L226 Difference]: Without dead ends: 1477 [2021-10-08 18:13:10,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1855.5ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:13:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-10-08 18:13:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1454. [2021-10-08 18:13:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1370 states have (on average 3.8788321167883213) internal successors, (5314), 1453 states have internal predecessors, (5314), 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) [2021-10-08 18:13:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5314 transitions. [2021-10-08 18:13:10,102 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5314 transitions. Word has length 10 [2021-10-08 18:13:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:10,103 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 5314 transitions. [2021-10-08 18:13:10,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-08 18:13:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5314 transitions. [2021-10-08 18:13:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 18:13:10,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:10,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:10,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:10,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:10,305 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:10,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:10,306 INFO L82 PathProgramCache]: Analyzing trace with hash 542590740, now seen corresponding path program 1 times [2021-10-08 18:13:10,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:10,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534667616] [2021-10-08 18:13:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:10,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:10,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:10,309 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:10,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 18:13:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:10,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:10,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:10,680 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:13:10,680 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 18:13:10,753 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-08 18:13:10,754 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 3 case distinctions, treesize of input 25 treesize of output 36 [2021-10-08 18:13:10,857 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-08 18:13:10,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 61 [2021-10-08 18:13:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:13:11,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:13:11,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:11,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534667616] [2021-10-08 18:13:11,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534667616] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:11,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:11,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-08 18:13:11,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25050045] [2021-10-08 18:13:11,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:11,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:11,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:11,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:11,412 INFO L87 Difference]: Start difference. First operand 1454 states and 5314 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-08 18:13:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:11,852 INFO L93 Difference]: Finished difference Result 1377 states and 5074 transitions. [2021-10-08 18:13:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:13:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 [2021-10-08 18:13:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:11,857 INFO L225 Difference]: With dead ends: 1377 [2021-10-08 18:13:11,857 INFO L226 Difference]: Without dead ends: 1377 [2021-10-08 18:13:11,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 267.8ms TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:13:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-10-08 18:13:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1377. [2021-10-08 18:13:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1311 states have (on average 3.870327993897788) internal successors, (5074), 1376 states have internal predecessors, (5074), 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) [2021-10-08 18:13:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5074 transitions. [2021-10-08 18:13:11,882 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5074 transitions. Word has length 11 [2021-10-08 18:13:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:11,883 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 5074 transitions. [2021-10-08 18:13:11,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-08 18:13:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5074 transitions. [2021-10-08 18:13:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 18:13:11,883 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:11,883 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:11,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-08 18:13:12,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:12,085 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:12,085 INFO L82 PathProgramCache]: Analyzing trace with hash 542590741, now seen corresponding path program 1 times [2021-10-08 18:13:12,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:12,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046722284] [2021-10-08 18:13:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:12,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:12,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:12,088 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:12,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 18:13:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:12,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:13:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:12,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:13:12,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:13:12,703 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-08 18:13:12,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 80 [2021-10-08 18:13:12,709 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 83 treesize of output 81 [2021-10-08 18:13:13,174 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-08 18:13:13,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 54 [2021-10-08 18:13:13,533 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-08 18:13:13,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 71 [2021-10-08 18:13:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:14,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:15,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:15,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046722284] [2021-10-08 18:13:15,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046722284] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:15,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:15,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 18:13:15,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738792274] [2021-10-08 18:13:15,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:15,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:15,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:15,355 INFO L87 Difference]: Start difference. First operand 1377 states and 5074 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-08 18:13:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:20,561 INFO L93 Difference]: Finished difference Result 1759 states and 6330 transitions. [2021-10-08 18:13:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:13:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 [2021-10-08 18:13:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:20,566 INFO L225 Difference]: With dead ends: 1759 [2021-10-08 18:13:20,566 INFO L226 Difference]: Without dead ends: 1759 [2021-10-08 18:13:20,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1831.3ms TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:13:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2021-10-08 18:13:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1300. [2021-10-08 18:13:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1252 states have (on average 3.8610223642172525) internal successors, (4834), 1299 states have internal predecessors, (4834), 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) [2021-10-08 18:13:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 4834 transitions. [2021-10-08 18:13:20,604 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 4834 transitions. Word has length 11 [2021-10-08 18:13:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:20,604 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 4834 transitions. [2021-10-08 18:13:20,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-08 18:13:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 4834 transitions. [2021-10-08 18:13:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 18:13:20,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:20,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:20,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:20,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:20,821 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:20,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash -359565311, now seen corresponding path program 1 times [2021-10-08 18:13:20,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:20,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829272125] [2021-10-08 18:13:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:20,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:20,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:20,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 18:13:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:21,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:13:21,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:21,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:21,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:21,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829272125] [2021-10-08 18:13:21,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829272125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:21,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:21,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 18:13:21,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008738705] [2021-10-08 18:13:21,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:21,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:21,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:21,414 INFO L87 Difference]: Start difference. First operand 1300 states and 4834 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-10-08 18:13:22,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:22,561 INFO L93 Difference]: Finished difference Result 1491 states and 5209 transitions. [2021-10-08 18:13:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 18:13:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 12 [2021-10-08 18:13:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:22,567 INFO L225 Difference]: With dead ends: 1491 [2021-10-08 18:13:22,567 INFO L226 Difference]: Without dead ends: 1491 [2021-10-08 18:13:22,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 300.2ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:13:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-10-08 18:13:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1234. [2021-10-08 18:13:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1186 states have (on average 3.8026981450252952) internal successors, (4510), 1233 states have internal predecessors, (4510), 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) [2021-10-08 18:13:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 4510 transitions. [2021-10-08 18:13:22,590 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 4510 transitions. Word has length 12 [2021-10-08 18:13:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:22,591 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 4510 transitions. [2021-10-08 18:13:22,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-10-08 18:13:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 4510 transitions. [2021-10-08 18:13:22,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:13:22,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:22,592 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:22,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:22,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:22,800 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:22,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash -18272011, now seen corresponding path program 2 times [2021-10-08 18:13:22,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:22,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374901872] [2021-10-08 18:13:22,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:13:22,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:22,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:22,804 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:22,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 18:13:23,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:13:23,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:23,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:13:23,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:23,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:13:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:13:23,345 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:13:23,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:13:23,441 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:13:23,441 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:13:23,583 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:13:23,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 32 treesize of output 34 [2021-10-08 18:13:23,598 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 18:13:23,598 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 31 treesize of output 31 [2021-10-08 18:13:25,764 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 18:13:25,764 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 3 case distinctions, treesize of input 27 treesize of output 36 [2021-10-08 18:13:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:13:26,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:13:28,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:28,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374901872] [2021-10-08 18:13:28,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374901872] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:28,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:28,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 18:13:28,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692537871] [2021-10-08 18:13:28,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:13:28,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:13:28,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:13:28,143 INFO L87 Difference]: Start difference. First operand 1234 states and 4510 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2021-10-08 18:13:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:31,951 INFO L93 Difference]: Finished difference Result 2146 states and 8241 transitions. [2021-10-08 18:13:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:13:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 13 [2021-10-08 18:13:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:31,959 INFO L225 Difference]: With dead ends: 2146 [2021-10-08 18:13:31,959 INFO L226 Difference]: Without dead ends: 2146 [2021-10-08 18:13:31,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 5539.1ms TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:13:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-10-08 18:13:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1804. [2021-10-08 18:13:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1756 states have (on average 4.145216400911162) internal successors, (7279), 1803 states have internal predecessors, (7279), 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) [2021-10-08 18:13:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 7279 transitions. [2021-10-08 18:13:31,995 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 7279 transitions. Word has length 13 [2021-10-08 18:13:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:31,996 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 7279 transitions. [2021-10-08 18:13:31,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2021-10-08 18:13:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 7279 transitions. [2021-10-08 18:13:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:13:31,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:31,996 INFO L512 BasicCegarLoop]: trace histogram [8, 2, 1, 1, 1] [2021-10-08 18:13:32,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:32,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:32,197 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:13:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:32,198 INFO L82 PathProgramCache]: Analyzing trace with hash 754138982, now seen corresponding path program 1 times [2021-10-08 18:13:32,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:32,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803929993] [2021-10-08 18:13:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:32,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:32,201 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:32,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 18:13:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:32,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 18:13:32,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:32,577 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 16 treesize of output 15 [2021-10-08 18:13:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:33,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:36,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:36,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803929993] [2021-10-08 18:13:36,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803929993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:36,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:36,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-08 18:13:36,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518081356] [2021-10-08 18:13:36,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 18:13:36,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 18:13:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-10-08 18:13:36,196 INFO L87 Difference]: Start difference. First operand 1804 states and 7279 transitions. Second operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-10-08 18:14:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:10,245 INFO L93 Difference]: Finished difference Result 18471 states and 76126 transitions. [2021-10-08 18:14:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 18:14:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 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 13 [2021-10-08 18:14:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:10,327 INFO L225 Difference]: With dead ends: 18471 [2021-10-08 18:14:10,328 INFO L226 Difference]: Without dead ends: 18471 [2021-10-08 18:14:10,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 5833.4ms TimeCoverageRelationStatistics Valid=318, Invalid=1322, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:14:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2021-10-08 18:14:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 1819. [2021-10-08 18:14:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1771 states have (on average 4.124223602484472) internal successors, (7304), 1818 states have internal predecessors, (7304), 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) [2021-10-08 18:14:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7304 transitions. [2021-10-08 18:14:10,581 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7304 transitions. Word has length 13 [2021-10-08 18:14:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:10,581 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 7304 transitions. [2021-10-08 18:14:10,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-10-08 18:14:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7304 transitions. [2021-10-08 18:14:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:10,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:10,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:10,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:10,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:10,796 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:14:10,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:10,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1935342274, now seen corresponding path program 1 times [2021-10-08 18:14:10,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:10,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600803483] [2021-10-08 18:14:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:10,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:10,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:10,801 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:10,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 18:14:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:11,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:14:11,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:14:11,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:14:11,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:11,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600803483] [2021-10-08 18:14:11,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600803483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:11,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:11,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 18:14:11,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654065242] [2021-10-08 18:14:11,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:14:11,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:14:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:14:11,287 INFO L87 Difference]: Start difference. First operand 1819 states and 7304 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-08 18:14:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:11,519 INFO L93 Difference]: Finished difference Result 2637 states and 10494 transitions. [2021-10-08 18:14:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:14:11,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 14 [2021-10-08 18:14:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:11,529 INFO L225 Difference]: With dead ends: 2637 [2021-10-08 18:14:11,529 INFO L226 Difference]: Without dead ends: 2637 [2021-10-08 18:14:11,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:14:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-10-08 18:14:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2123. [2021-10-08 18:14:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2075 states have (on average 4.151325301204819) internal successors, (8614), 2122 states have internal predecessors, (8614), 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) [2021-10-08 18:14:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 8614 transitions. [2021-10-08 18:14:11,588 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 8614 transitions. Word has length 14 [2021-10-08 18:14:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:11,588 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 8614 transitions. [2021-10-08 18:14:11,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-08 18:14:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 8614 transitions. [2021-10-08 18:14:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:11,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:11,590 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:11,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:11,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:11,804 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:14:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash -566425091, now seen corresponding path program 1 times [2021-10-08 18:14:11,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:11,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87144799] [2021-10-08 18:14:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:11,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:11,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:11,808 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:11,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 18:14:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:12,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:14:12,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:12,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:14:12,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:14:12,543 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:14:12,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:14:12,735 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:14:12,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 28 treesize of output 28 [2021-10-08 18:14:12,758 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 [2021-10-08 18:14:12,936 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 18:14:12,936 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 3 case distinctions, treesize of input 48 treesize of output 57 [2021-10-08 18:14:12,951 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 18:14:12,951 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 51 treesize of output 51 [2021-10-08 18:14:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:14:13,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:14,259 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 26 treesize of output 24 [2021-10-08 18:14:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:14:14,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:14,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87144799] [2021-10-08 18:14:14,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87144799] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:14,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:14,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 18:14:14,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378648371] [2021-10-08 18:14:14,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:14,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:14,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:14,639 INFO L87 Difference]: Start difference. First operand 2123 states and 8614 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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) [2021-10-08 18:14:59,764 WARN L207 SmtUtils]: Spent 6.32 s on a formula simplification that was a NOOP. DAG size: 54 [2021-10-08 18:15:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:32,708 INFO L93 Difference]: Finished difference Result 11283 states and 44377 transitions. [2021-10-08 18:15:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:15:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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 14 [2021-10-08 18:15:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:32,793 INFO L225 Difference]: With dead ends: 11283 [2021-10-08 18:15:32,794 INFO L226 Difference]: Without dead ends: 11283 [2021-10-08 18:15:32,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 37088.6ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:15:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11283 states. [2021-10-08 18:15:32,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11283 to 2413. [2021-10-08 18:15:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2365 states have (on average 4.08076109936575) internal successors, (9651), 2412 states have internal predecessors, (9651), 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) [2021-10-08 18:15:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 9651 transitions. [2021-10-08 18:15:32,937 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 9651 transitions. Word has length 14 [2021-10-08 18:15:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:32,937 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 9651 transitions. [2021-10-08 18:15:32,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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) [2021-10-08 18:15:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 9651 transitions. [2021-10-08 18:15:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:32,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:32,938 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:32,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:33,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:33,154 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:15:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:33,156 INFO L82 PathProgramCache]: Analyzing trace with hash -368891939, now seen corresponding path program 2 times [2021-10-08 18:15:33,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:33,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59460259] [2021-10-08 18:15:33,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:15:33,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:33,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:33,158 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:33,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 18:15:33,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:15:33,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:33,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:15:33,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:33,543 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 8 treesize of output 7 [2021-10-08 18:15:33,556 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 [2021-10-08 18:15:33,667 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:15:33,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 31 treesize of output 33 [2021-10-08 18:15:33,683 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 18:15:33,683 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 30 treesize of output 30 [2021-10-08 18:15:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:15:36,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:36,622 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 29 treesize of output 27 [2021-10-08 18:15:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:15:36,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:36,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59460259] [2021-10-08 18:15:36,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59460259] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:36,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:36,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-08 18:15:36,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581759753] [2021-10-08 18:15:36,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:15:36,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:36,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:15:36,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:15:36,694 INFO L87 Difference]: Start difference. First operand 2413 states and 9651 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-10-08 18:15:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:40,289 INFO L93 Difference]: Finished difference Result 3249 states and 13992 transitions. [2021-10-08 18:15:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:15:40,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 15 [2021-10-08 18:15:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:40,301 INFO L225 Difference]: With dead ends: 3249 [2021-10-08 18:15:40,301 INFO L226 Difference]: Without dead ends: 3249 [2021-10-08 18:15:40,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4855.6ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:15:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2021-10-08 18:15:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 2701. [2021-10-08 18:15:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2653 states have (on average 4.632491519035055) internal successors, (12290), 2700 states have internal predecessors, (12290), 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) [2021-10-08 18:15:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 12290 transitions. [2021-10-08 18:15:40,359 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 12290 transitions. Word has length 15 [2021-10-08 18:15:40,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:40,359 INFO L470 AbstractCegarLoop]: Abstraction has 2701 states and 12290 transitions. [2021-10-08 18:15:40,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-10-08 18:15:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 12290 transitions. [2021-10-08 18:15:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:40,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:40,360 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:40,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:40,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:40,562 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:15:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash -368891937, now seen corresponding path program 1 times [2021-10-08 18:15:40,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:40,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37851878] [2021-10-08 18:15:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:40,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:40,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:40,566 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:40,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 18:15:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:40,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:15:40,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:15:41,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:41,477 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 27 treesize of output 23 [2021-10-08 18:15:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:15:41,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:41,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37851878] [2021-10-08 18:15:41,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37851878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:41,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:41,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:15:41,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384150136] [2021-10-08 18:15:41,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:15:41,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:15:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:15:41,755 INFO L87 Difference]: Start difference. First operand 2701 states and 12290 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-10-08 18:15:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:44,224 INFO L93 Difference]: Finished difference Result 7565 states and 33998 transitions. [2021-10-08 18:15:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:15:44,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 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 15 [2021-10-08 18:15:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:44,251 INFO L225 Difference]: With dead ends: 7565 [2021-10-08 18:15:44,251 INFO L226 Difference]: Without dead ends: 7565 [2021-10-08 18:15:44,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1032.0ms TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:15:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7565 states. [2021-10-08 18:15:44,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7565 to 2639. [2021-10-08 18:15:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2591 states have (on average 4.628714781937476) internal successors, (11993), 2638 states have internal predecessors, (11993), 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) [2021-10-08 18:15:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 11993 transitions. [2021-10-08 18:15:44,348 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 11993 transitions. Word has length 15 [2021-10-08 18:15:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:44,348 INFO L470 AbstractCegarLoop]: Abstraction has 2639 states and 11993 transitions. [2021-10-08 18:15:44,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-10-08 18:15:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 11993 transitions. [2021-10-08 18:15:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:44,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:44,349 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:44,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:44,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:44,564 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:15:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:44,565 INFO L82 PathProgramCache]: Analyzing trace with hash -368891935, now seen corresponding path program 1 times [2021-10-08 18:15:44,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:44,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433142267] [2021-10-08 18:15:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:44,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:44,567 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:44,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 18:15:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:45,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 18:15:45,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:45,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:15:45,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:15:45,326 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:15:45,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:15:45,437 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:15:45,438 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:15:45,678 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:15:45,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 36 treesize of output 36 [2021-10-08 18:15:45,694 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 18:15:45,694 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 35 treesize of output 35 [2021-10-08 18:15:47,915 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 18:15:47,916 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 3 case distinctions, treesize of input 39 treesize of output 46 [2021-10-08 18:15:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:15:49,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:15:50,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:50,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433142267] [2021-10-08 18:15:50,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433142267] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:50,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:50,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-08 18:15:50,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331035241] [2021-10-08 18:15:50,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:15:50,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:15:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:15:50,709 INFO L87 Difference]: Start difference. First operand 2639 states and 11993 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2021-10-08 18:16:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:31,120 INFO L93 Difference]: Finished difference Result 15412 states and 70948 transitions. [2021-10-08 18:16:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 18:16:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 15 [2021-10-08 18:16:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:31,188 INFO L225 Difference]: With dead ends: 15412 [2021-10-08 18:16:31,188 INFO L226 Difference]: Without dead ends: 15412 [2021-10-08 18:16:31,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 23001.8ms TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 18:16:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15412 states. [2021-10-08 18:16:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15412 to 3095. [2021-10-08 18:16:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3047 states have (on average 4.57466360354447) internal successors, (13939), 3094 states have internal predecessors, (13939), 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) [2021-10-08 18:16:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 13939 transitions. [2021-10-08 18:16:31,393 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 13939 transitions. Word has length 15 [2021-10-08 18:16:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:31,393 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 13939 transitions. [2021-10-08 18:16:31,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2021-10-08 18:16:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 13939 transitions. [2021-10-08 18:16:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:16:31,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:31,394 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:31,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 18:16:31,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:31,609 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:16:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:31,610 INFO L82 PathProgramCache]: Analyzing trace with hash -368891934, now seen corresponding path program 1 times [2021-10-08 18:16:31,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:31,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092966286] [2021-10-08 18:16:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:16:31,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:31,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:31,613 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:31,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 18:16:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:16:31,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:16:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:32,010 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 [2021-10-08 18:16:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:16:32,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:16:32,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:32,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092966286] [2021-10-08 18:16:32,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092966286] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:16:32,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:16:32,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-08 18:16:32,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169795794] [2021-10-08 18:16:32,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:16:32,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:16:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:16:32,113 INFO L87 Difference]: Start difference. First operand 3095 states and 13939 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-08 18:16:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:32,492 INFO L93 Difference]: Finished difference Result 2553 states and 11072 transitions. [2021-10-08 18:16:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:16:32,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 15 [2021-10-08 18:16:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:32,508 INFO L225 Difference]: With dead ends: 2553 [2021-10-08 18:16:32,508 INFO L226 Difference]: Without dead ends: 2553 [2021-10-08 18:16:32,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 18:16:32,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-10-08 18:16:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2553. [2021-10-08 18:16:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2526 states have (on average 4.383214568487728) internal successors, (11072), 2552 states have internal predecessors, (11072), 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) [2021-10-08 18:16:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 11072 transitions. [2021-10-08 18:16:32,596 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 11072 transitions. Word has length 15 [2021-10-08 18:16:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:32,597 INFO L470 AbstractCegarLoop]: Abstraction has 2553 states and 11072 transitions. [2021-10-08 18:16:32,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-08 18:16:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 11072 transitions. [2021-10-08 18:16:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:16:32,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:32,598 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:32,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:32,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:32,805 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:16:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1126677090, now seen corresponding path program 1 times [2021-10-08 18:16:32,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:32,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756384056] [2021-10-08 18:16:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:16:32,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:32,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:32,809 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:32,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 18:16:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:16:33,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:16:33,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:33,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:16:33,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:16:33,545 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:16:33,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:16:33,676 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 15 treesize of output 11 [2021-10-08 18:16:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:16:33,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:16:34,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:34,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756384056] [2021-10-08 18:16:34,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756384056] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:34,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:34,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:16:34,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022037523] [2021-10-08 18:16:34,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:16:34,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:16:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:16:34,297 INFO L87 Difference]: Start difference. First operand 2553 states and 11072 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-10-08 18:16:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:37,677 INFO L93 Difference]: Finished difference Result 3579 states and 15285 transitions. [2021-10-08 18:16:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:16:37,679 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 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 16 [2021-10-08 18:16:37,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:37,689 INFO L225 Difference]: With dead ends: 3579 [2021-10-08 18:16:37,690 INFO L226 Difference]: Without dead ends: 3579 [2021-10-08 18:16:37,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 836.0ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:16:37,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-10-08 18:16:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3087. [2021-10-08 18:16:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3060 states have (on average 4.380718954248366) internal successors, (13405), 3086 states have internal predecessors, (13405), 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) [2021-10-08 18:16:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 13405 transitions. [2021-10-08 18:16:37,762 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 13405 transitions. Word has length 16 [2021-10-08 18:16:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:37,763 INFO L470 AbstractCegarLoop]: Abstraction has 3087 states and 13405 transitions. [2021-10-08 18:16:37,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-10-08 18:16:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 13405 transitions. [2021-10-08 18:16:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:16:37,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:37,764 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:37,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:37,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:37,979 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:16:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1449260136, now seen corresponding path program 1 times [2021-10-08 18:16:37,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:37,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826657446] [2021-10-08 18:16:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:16:37,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:37,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:37,983 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:37,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 18:16:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:16:38,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:16:38,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:38,525 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 8 treesize of output 7 [2021-10-08 18:16:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:16:38,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:16:39,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:39,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826657446] [2021-10-08 18:16:39,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826657446] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:39,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:39,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 18:16:39,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532655379] [2021-10-08 18:16:39,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:16:39,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:16:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:16:39,592 INFO L87 Difference]: Start difference. First operand 3087 states and 13405 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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) [2021-10-08 18:16:42,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:42,332 INFO L93 Difference]: Finished difference Result 6147 states and 25478 transitions. [2021-10-08 18:16:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:16:42,334 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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 16 [2021-10-08 18:16:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:42,353 INFO L225 Difference]: With dead ends: 6147 [2021-10-08 18:16:42,353 INFO L226 Difference]: Without dead ends: 6147 [2021-10-08 18:16:42,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1169.8ms TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:16:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2021-10-08 18:16:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 3723. [2021-10-08 18:16:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3696 states have (on average 4.78814935064935) internal successors, (17697), 3722 states have internal predecessors, (17697), 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) [2021-10-08 18:16:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 17697 transitions. [2021-10-08 18:16:42,454 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 17697 transitions. Word has length 16 [2021-10-08 18:16:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:42,454 INFO L470 AbstractCegarLoop]: Abstraction has 3723 states and 17697 transitions. [2021-10-08 18:16:42,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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) [2021-10-08 18:16:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 17697 transitions. [2021-10-08 18:16:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:16:42,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:42,455 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:42,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:42,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:42,670 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:16:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1449260138, now seen corresponding path program 1 times [2021-10-08 18:16:42,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:42,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391470198] [2021-10-08 18:16:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:16:42,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:42,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:42,673 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:42,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 18:16:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:16:43,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:16:43,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:43,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:16:43,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:16:43,437 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:16:43,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:16:43,564 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 13 treesize of output 9 [2021-10-08 18:16:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:16:43,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:16:44,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:44,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391470198] [2021-10-08 18:16:44,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391470198] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:44,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:44,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 18:16:44,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943286662] [2021-10-08 18:16:44,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:16:44,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:16:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:16:44,183 INFO L87 Difference]: Start difference. First operand 3723 states and 17697 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-10-08 18:16:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:47,082 INFO L93 Difference]: Finished difference Result 3327 states and 14792 transitions. [2021-10-08 18:16:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:16:47,084 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 16 [2021-10-08 18:16:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:47,131 INFO L225 Difference]: With dead ends: 3327 [2021-10-08 18:16:47,131 INFO L226 Difference]: Without dead ends: 3327 [2021-10-08 18:16:47,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 829.0ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:16:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2021-10-08 18:16:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3087. [2021-10-08 18:16:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3060 states have (on average 4.615359477124183) internal successors, (14123), 3086 states have internal predecessors, (14123), 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) [2021-10-08 18:16:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 14123 transitions. [2021-10-08 18:16:47,195 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 14123 transitions. Word has length 16 [2021-10-08 18:16:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:47,196 INFO L470 AbstractCegarLoop]: Abstraction has 3087 states and 14123 transitions. [2021-10-08 18:16:47,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-10-08 18:16:47,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 14123 transitions. [2021-10-08 18:16:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:16:47,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:47,197 INFO L512 BasicCegarLoop]: trace histogram [10, 3, 1, 1, 1] [2021-10-08 18:16:47,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:47,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:47,410 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:16:47,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1947626969, now seen corresponding path program 2 times [2021-10-08 18:16:47,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:47,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072092500] [2021-10-08 18:16:47,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:16:47,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:47,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:47,414 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:47,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 18:16:47,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:16:47,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:16:47,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 18:16:47,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:47,955 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 16 treesize of output 15 [2021-10-08 18:16:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:16:48,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:52,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:52,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072092500] [2021-10-08 18:16:52,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072092500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:52,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:52,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 28 [2021-10-08 18:16:52,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230561006] [2021-10-08 18:16:52,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 18:16:52,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 18:16:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2021-10-08 18:16:52,759 INFO L87 Difference]: Start difference. First operand 3087 states and 14123 transitions. Second operand has 29 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 states have internal predecessors, (31), 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) [2021-10-08 18:17:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:43,703 INFO L93 Difference]: Finished difference Result 31623 states and 151955 transitions. [2021-10-08 18:17:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 18:17:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 states have internal predecessors, (31), 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 16 [2021-10-08 18:17:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:43,863 INFO L225 Difference]: With dead ends: 31623 [2021-10-08 18:17:43,863 INFO L226 Difference]: Without dead ends: 31623 [2021-10-08 18:17:43,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 10118.6ms TimeCoverageRelationStatistics Valid=503, Invalid=2467, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:17:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31623 states. [2021-10-08 18:17:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31623 to 3130. [2021-10-08 18:17:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3103 states have (on average 4.575894295842732) internal successors, (14199), 3129 states have internal predecessors, (14199), 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) [2021-10-08 18:17:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 14199 transitions. [2021-10-08 18:17:44,336 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 14199 transitions. Word has length 16 [2021-10-08 18:17:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:44,336 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 14199 transitions. [2021-10-08 18:17:44,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 states have internal predecessors, (31), 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) [2021-10-08 18:17:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 14199 transitions. [2021-10-08 18:17:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:17:44,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:44,338 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-08 18:17:44,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:44,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:44,547 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:17:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:44,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1695992988, now seen corresponding path program 3 times [2021-10-08 18:17:44,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:44,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934927337] [2021-10-08 18:17:44,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:17:44,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:44,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:44,551 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:44,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 18:17:45,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 18:17:45,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:45,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:17:45,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:45,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:17:45,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:17:45,476 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:17:45,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:17:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:46,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:52,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:52,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934927337] [2021-10-08 18:17:52,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934927337] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:52,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:52,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 18:17:52,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995185575] [2021-10-08 18:17:52,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 18:17:52,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 18:17:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-08 18:17:52,295 INFO L87 Difference]: Start difference. First operand 3130 states and 14199 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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) [2021-10-08 18:18:05,233 WARN L207 SmtUtils]: Spent 8.98 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-08 18:18:13,740 WARN L207 SmtUtils]: Spent 7.55 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-08 18:18:20,338 WARN L207 SmtUtils]: Spent 5.54 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-08 18:19:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:59,121 INFO L93 Difference]: Finished difference Result 34420 states and 169214 transitions. [2021-10-08 18:19:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 18:19:59,123 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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 16 [2021-10-08 18:19:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:59,475 INFO L225 Difference]: With dead ends: 34420 [2021-10-08 18:19:59,475 INFO L226 Difference]: Without dead ends: 34420 [2021-10-08 18:19:59,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 53194.1ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:19:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34420 states. [2021-10-08 18:19:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34420 to 3141. [2021-10-08 18:19:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3114 states have (on average 4.5667951188182405) internal successors, (14221), 3140 states have internal predecessors, (14221), 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) [2021-10-08 18:19:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 14221 transitions. [2021-10-08 18:19:59,933 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 14221 transitions. Word has length 16 [2021-10-08 18:19:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:59,933 INFO L470 AbstractCegarLoop]: Abstraction has 3141 states and 14221 transitions. [2021-10-08 18:19:59,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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) [2021-10-08 18:19:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 14221 transitions. [2021-10-08 18:19:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:19:59,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:59,935 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:59,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:00,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:00,145 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:20:00,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:00,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1889696906, now seen corresponding path program 1 times [2021-10-08 18:20:00,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:00,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005201664] [2021-10-08 18:20:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:00,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:00,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:00,148 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:00,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 18:20:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:00,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:20:00,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:20:00,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:00,967 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 27 treesize of output 23 [2021-10-08 18:20:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:20:01,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:01,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005201664] [2021-10-08 18:20:01,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005201664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:20:01,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:20:01,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-08 18:20:01,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390816702] [2021-10-08 18:20:01,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:20:01,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:20:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:20:01,252 INFO L87 Difference]: Start difference. First operand 3141 states and 14221 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-08 18:20:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:03,658 INFO L93 Difference]: Finished difference Result 5299 states and 23932 transitions. [2021-10-08 18:20:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:20:03,659 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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 19 [2021-10-08 18:20:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:03,679 INFO L225 Difference]: With dead ends: 5299 [2021-10-08 18:20:03,679 INFO L226 Difference]: Without dead ends: 5299 [2021-10-08 18:20:03,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 723.9ms TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:20:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2021-10-08 18:20:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 3507. [2021-10-08 18:20:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3480 states have (on average 4.835632183908046) internal successors, (16828), 3506 states have internal predecessors, (16828), 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) [2021-10-08 18:20:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 16828 transitions. [2021-10-08 18:20:03,843 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 16828 transitions. Word has length 19 [2021-10-08 18:20:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:03,843 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 16828 transitions. [2021-10-08 18:20:03,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-08 18:20:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 16828 transitions. [2021-10-08 18:20:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:20:03,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:03,845 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:20:03,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-08 18:20:04,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:04,046 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:20:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1880921426, now seen corresponding path program 2 times [2021-10-08 18:20:04,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:04,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525697704] [2021-10-08 18:20:04,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:20:04,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:04,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:04,050 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:04,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 18:20:04,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:20:04,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:20:04,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:20:04,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:20:04,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:04,742 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 35 treesize of output 31 [2021-10-08 18:20:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:20:05,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:05,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525697704] [2021-10-08 18:20:05,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525697704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:20:05,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:20:05,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-08 18:20:05,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220465691] [2021-10-08 18:20:05,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:20:05,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:05,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:20:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:20:05,139 INFO L87 Difference]: Start difference. First operand 3507 states and 16828 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-08 18:20:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:08,732 INFO L93 Difference]: Finished difference Result 7289 states and 34202 transitions. [2021-10-08 18:20:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 18:20:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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 19 [2021-10-08 18:20:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:08,759 INFO L225 Difference]: With dead ends: 7289 [2021-10-08 18:20:08,759 INFO L226 Difference]: Without dead ends: 7289 [2021-10-08 18:20:08,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 901.4ms TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:20:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7289 states. [2021-10-08 18:20:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7289 to 3595. [2021-10-08 18:20:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3568 states have (on average 4.86322869955157) internal successors, (17352), 3594 states have internal predecessors, (17352), 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) [2021-10-08 18:20:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 17352 transitions. [2021-10-08 18:20:08,915 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 17352 transitions. Word has length 19 [2021-10-08 18:20:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:08,916 INFO L470 AbstractCegarLoop]: Abstraction has 3595 states and 17352 transitions. [2021-10-08 18:20:08,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-08 18:20:08,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 17352 transitions. [2021-10-08 18:20:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:20:08,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:08,917 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:20:08,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:09,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:09,118 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:20:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2070687832, now seen corresponding path program 3 times [2021-10-08 18:20:09,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:09,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907999533] [2021-10-08 18:20:09,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:20:09,120 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:09,121 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:09,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 18:20:09,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 18:20:09,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:20:09,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:20:09,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:20:09,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:09,802 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 35 treesize of output 31 [2021-10-08 18:20:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:20:10,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:10,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907999533] [2021-10-08 18:20:10,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907999533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:20:10,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:20:10,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-08 18:20:10,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302573257] [2021-10-08 18:20:10,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:20:10,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:20:10,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:20:10,194 INFO L87 Difference]: Start difference. First operand 3595 states and 17352 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-08 18:20:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:12,048 INFO L93 Difference]: Finished difference Result 6121 states and 29248 transitions. [2021-10-08 18:20:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:20:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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 19 [2021-10-08 18:20:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:12,070 INFO L225 Difference]: With dead ends: 6121 [2021-10-08 18:20:12,070 INFO L226 Difference]: Without dead ends: 6121 [2021-10-08 18:20:12,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 543.3ms TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:20:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2021-10-08 18:20:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 3507. [2021-10-08 18:20:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3480 states have (on average 4.835632183908046) internal successors, (16828), 3506 states have internal predecessors, (16828), 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) [2021-10-08 18:20:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 16828 transitions. [2021-10-08 18:20:12,213 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 16828 transitions. Word has length 19 [2021-10-08 18:20:12,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:12,214 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 16828 transitions. [2021-10-08 18:20:12,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-08 18:20:12,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 16828 transitions. [2021-10-08 18:20:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:20:12,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:12,215 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:20:12,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:12,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:12,416 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:20:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash 78841150, now seen corresponding path program 2 times [2021-10-08 18:20:12,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:12,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655084271] [2021-10-08 18:20:12,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:20:12,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:12,420 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:12,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 18:20:12,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:20:12,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:20:12,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:20:12,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:13,248 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:20:13,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:20:13,346 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:20:13,347 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:20:13,493 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:20:13,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 18 [2021-10-08 18:20:13,531 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 18:20:13,531 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 24 treesize of output 31 [2021-10-08 18:20:13,810 INFO L354 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2021-10-08 18:20:13,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 36 [2021-10-08 18:20:13,896 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-08 18:20:13,897 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 32 treesize of output 34 [2021-10-08 18:20:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-08 18:20:18,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:33,455 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_create_fresh_int_array_~size_291 (_ BitVec 32)) (thread1Thread1of1ForFork1_~i~0 (_ BitVec 32)) (v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_276 (_ BitVec 32)) (v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_277 (_ BitVec 32))) (let ((.cse0 (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)))) (let ((.cse2 (store (store |c_#length| v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_277 (bvmul c_~N~0 (_ bv4 32))) v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_276 (bvmul v_ULTIMATE.start_create_fresh_int_array_~size_291 (_ bv4 32)))) (.cse3 (bvadd (_ bv4 32) .cse0 c_ULTIMATE.start_create_fresh_int_array_~arr~0.offset))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_277 (_ bv1 1)) v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_276))) (let ((.cse1 (bvadd (_ bv4 32) .cse0))) (and (bvule .cse0 .cse1) (bvule .cse1 (select .cse2 v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_277)))) (not (bvule .cse3 (select .cse2 c_ULTIMATE.start_create_fresh_int_array_~arr~0.base))) (not (bvule (bvadd .cse0 c_ULTIMATE.start_create_fresh_int_array_~arr~0.offset) .cse3)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_277))))))))) is different from false [2021-10-08 18:20:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-08 18:20:40,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:40,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655084271] [2021-10-08 18:20:40,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655084271] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:20:40,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:20:40,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-10-08 18:20:40,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105286870] [2021-10-08 18:20:40,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:20:40,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:20:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=68, Unknown=2, NotChecked=16, Total=110 [2021-10-08 18:20:40,267 INFO L87 Difference]: Start difference. First operand 3507 states and 16828 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-10-08 18:20:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:44,619 INFO L93 Difference]: Finished difference Result 3079 states and 14300 transitions. [2021-10-08 18:20:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:20:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 19 [2021-10-08 18:20:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:44,632 INFO L225 Difference]: With dead ends: 3079 [2021-10-08 18:20:44,632 INFO L226 Difference]: Without dead ends: 3079 [2021-10-08 18:20:44,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 11513.3ms TimeCoverageRelationStatistics Valid=56, Invalid=128, Unknown=2, NotChecked=24, Total=210 [2021-10-08 18:20:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2021-10-08 18:20:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 3079. [2021-10-08 18:20:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3079 states, 3064 states have (on average 4.66710182767624) internal successors, (14300), 3078 states have internal predecessors, (14300), 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) [2021-10-08 18:20:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 14300 transitions. [2021-10-08 18:20:44,720 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 14300 transitions. Word has length 19 [2021-10-08 18:20:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:44,720 INFO L470 AbstractCegarLoop]: Abstraction has 3079 states and 14300 transitions. [2021-10-08 18:20:44,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-10-08 18:20:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 14300 transitions. [2021-10-08 18:20:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:20:44,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:44,722 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:20:44,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 18:20:44,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:44,936 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:20:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash 401424198, now seen corresponding path program 2 times [2021-10-08 18:20:44,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:44,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380165652] [2021-10-08 18:20:44,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:20:44,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:44,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:44,940 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:44,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 18:20:45,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:20:45,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:20:45,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:20:45,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:45,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:20:45,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:20:45,895 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:20:45,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:20:46,013 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:20:46,014 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:20:46,201 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:20:46,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 39 treesize of output 41 [2021-10-08 18:20:46,242 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 18:20:46,243 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 38 treesize of output 45 [2021-10-08 18:20:46,589 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-08 18:20:46,590 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 3 case distinctions, treesize of input 55 treesize of output 60 [2021-10-08 18:20:46,631 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-08 18:20:46,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 54 treesize of output 56 [2021-10-08 18:20:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-08 18:20:57,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-08 18:21:05,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:05,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380165652] [2021-10-08 18:21:05,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380165652] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:05,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:05,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-08 18:21:05,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980628150] [2021-10-08 18:21:05,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:21:05,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:21:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=116, Unknown=3, NotChecked=0, Total=156 [2021-10-08 18:21:05,691 INFO L87 Difference]: Start difference. First operand 3079 states and 14300 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2021-10-08 18:21:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:34,229 INFO L93 Difference]: Finished difference Result 3555 states and 15024 transitions. [2021-10-08 18:21:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:21:34,230 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 19 [2021-10-08 18:21:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:34,241 INFO L225 Difference]: With dead ends: 3555 [2021-10-08 18:21:34,242 INFO L226 Difference]: Without dead ends: 3555 [2021-10-08 18:21:34,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 33192.0ms TimeCoverageRelationStatistics Valid=112, Invalid=226, Unknown=4, NotChecked=0, Total=342 [2021-10-08 18:21:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2021-10-08 18:21:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 2589. [2021-10-08 18:21:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2574 states have (on average 4.517871017871018) internal successors, (11629), 2588 states have internal predecessors, (11629), 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) [2021-10-08 18:21:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 11629 transitions. [2021-10-08 18:21:34,320 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 11629 transitions. Word has length 19 [2021-10-08 18:21:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:34,321 INFO L470 AbstractCegarLoop]: Abstraction has 2589 states and 11629 transitions. [2021-10-08 18:21:34,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2021-10-08 18:21:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 11629 transitions. [2021-10-08 18:21:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:21:34,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:34,323 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:34,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:34,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:34,539 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:21:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:34,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1850880817, now seen corresponding path program 1 times [2021-10-08 18:21:34,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:34,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472451382] [2021-10-08 18:21:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:34,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:34,542 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:34,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 18:21:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:35,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:21:35,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:35,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:35,603 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:21:35,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 18:21:35,840 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 20 treesize of output 14 [2021-10-08 18:21:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:21:36,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:21:37,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:37,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472451382] [2021-10-08 18:21:37,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472451382] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:37,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:37,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 18:21:37,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087568064] [2021-10-08 18:21:37,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:21:37,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:21:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:21:37,094 INFO L87 Difference]: Start difference. First operand 2589 states and 11629 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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) [2021-10-08 18:21:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:45,360 INFO L93 Difference]: Finished difference Result 4550 states and 20384 transitions. [2021-10-08 18:21:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 18:21:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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 20 [2021-10-08 18:21:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:45,375 INFO L225 Difference]: With dead ends: 4550 [2021-10-08 18:21:45,376 INFO L226 Difference]: Without dead ends: 4550 [2021-10-08 18:21:45,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1948.8ms TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:21:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-10-08 18:21:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4056. [2021-10-08 18:21:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 4041 states have (on average 4.639198218262806) internal successors, (18747), 4055 states have internal predecessors, (18747), 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) [2021-10-08 18:21:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 18747 transitions. [2021-10-08 18:21:45,512 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 18747 transitions. Word has length 20 [2021-10-08 18:21:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:45,512 INFO L470 AbstractCegarLoop]: Abstraction has 4056 states and 18747 transitions. [2021-10-08 18:21:45,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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) [2021-10-08 18:21:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 18747 transitions. [2021-10-08 18:21:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 18:21:45,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:45,514 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:45,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:45,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:45,715 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:21:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash -772470643, now seen corresponding path program 1 times [2021-10-08 18:21:45,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:45,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255461950] [2021-10-08 18:21:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:45,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:45,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:45,718 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:45,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 18:21:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:46,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:21:46,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:21:46,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:21:46,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:46,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255461950] [2021-10-08 18:21:46,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255461950] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:46,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:46,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:21:46,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229614640] [2021-10-08 18:21:46,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:21:46,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:46,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:21:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:21:46,675 INFO L87 Difference]: Start difference. First operand 4056 states and 18747 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-10-08 18:21:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:48,789 INFO L93 Difference]: Finished difference Result 6160 states and 26447 transitions. [2021-10-08 18:21:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:21:48,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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 21 [2021-10-08 18:21:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:48,810 INFO L225 Difference]: With dead ends: 6160 [2021-10-08 18:21:48,810 INFO L226 Difference]: Without dead ends: 6160 [2021-10-08 18:21:48,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 335.0ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:21:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2021-10-08 18:21:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 4484. [2021-10-08 18:21:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4469 states have (on average 4.589617364063549) internal successors, (20511), 4483 states have internal predecessors, (20511), 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) [2021-10-08 18:21:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 20511 transitions. [2021-10-08 18:21:48,940 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 20511 transitions. Word has length 21 [2021-10-08 18:21:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:48,940 INFO L470 AbstractCegarLoop]: Abstraction has 4484 states and 20511 transitions. [2021-10-08 18:21:48,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-10-08 18:21:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 20511 transitions. [2021-10-08 18:21:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 18:21:48,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:48,943 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:48,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:49,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:49,152 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:21:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:49,153 INFO L82 PathProgramCache]: Analyzing trace with hash -615772331, now seen corresponding path program 2 times [2021-10-08 18:21:49,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:49,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727512672] [2021-10-08 18:21:49,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:21:49,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:49,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:49,156 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:49,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 18:21:49,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:21:49,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:21:49,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:21:49,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:21:49,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:21:50,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:50,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727512672] [2021-10-08 18:21:50,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727512672] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:50,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:50,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:21:50,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700854736] [2021-10-08 18:21:50,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:21:50,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:21:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:21:50,123 INFO L87 Difference]: Start difference. First operand 4484 states and 20511 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-10-08 18:21:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:51,242 INFO L93 Difference]: Finished difference Result 6704 states and 29011 transitions. [2021-10-08 18:21:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:21:51,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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 21 [2021-10-08 18:21:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:51,265 INFO L225 Difference]: With dead ends: 6704 [2021-10-08 18:21:51,265 INFO L226 Difference]: Without dead ends: 6704 [2021-10-08 18:21:51,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 250.8ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:21:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2021-10-08 18:21:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 4546. [2021-10-08 18:21:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 4531 states have (on average 4.603398808210108) internal successors, (20858), 4545 states have internal predecessors, (20858), 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) [2021-10-08 18:21:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 20858 transitions. [2021-10-08 18:21:51,385 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 20858 transitions. Word has length 21 [2021-10-08 18:21:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:51,386 INFO L470 AbstractCegarLoop]: Abstraction has 4546 states and 20858 transitions. [2021-10-08 18:21:51,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-10-08 18:21:51,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 20858 transitions. [2021-10-08 18:21:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 18:21:51,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:51,388 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:51,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:51,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:51,602 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:21:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:51,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1361179605, now seen corresponding path program 3 times [2021-10-08 18:21:51,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:51,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561815550] [2021-10-08 18:21:51,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:21:51,604 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:51,606 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 18:21:52,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:21:52,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:21:52,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:21:52,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:21:52,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 18:21:52,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:52,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561815550] [2021-10-08 18:21:52,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561815550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:52,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:52,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:21:52,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550998941] [2021-10-08 18:21:52,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:21:52,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:21:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:21:52,700 INFO L87 Difference]: Start difference. First operand 4546 states and 20858 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 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) [2021-10-08 18:21:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:53,988 INFO L93 Difference]: Finished difference Result 9454 states and 40711 transitions. [2021-10-08 18:21:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:21:53,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 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 21 [2021-10-08 18:21:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:54,026 INFO L225 Difference]: With dead ends: 9454 [2021-10-08 18:21:54,026 INFO L226 Difference]: Without dead ends: 9454 [2021-10-08 18:21:54,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 306.6ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:21:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2021-10-08 18:21:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 4118. [2021-10-08 18:21:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4103 states have (on average 4.5008530343650985) internal successors, (18467), 4117 states have internal predecessors, (18467), 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) [2021-10-08 18:21:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 18467 transitions. [2021-10-08 18:21:54,176 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 18467 transitions. Word has length 21 [2021-10-08 18:21:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:54,177 INFO L470 AbstractCegarLoop]: Abstraction has 4118 states and 18467 transitions. [2021-10-08 18:21:54,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 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) [2021-10-08 18:21:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 18467 transitions. [2021-10-08 18:21:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:21:54,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:54,180 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:54,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:54,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:54,394 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:21:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:54,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1647507907, now seen corresponding path program 2 times [2021-10-08 18:21:54,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:54,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835169250] [2021-10-08 18:21:54,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:21:54,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:54,398 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:54,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 18:21:55,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:21:55,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:21:55,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 18:21:55,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:55,417 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:21:55,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:21:55,528 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:21:55,528 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:21:55,706 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 18:21:55,706 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 22 treesize of output 29 [2021-10-08 18:21:55,729 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 [2021-10-08 18:21:56,024 INFO L354 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2021-10-08 18:21:56,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2021-10-08 18:21:56,082 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-08 18:21:56,083 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 32 treesize of output 34 [2021-10-08 18:21:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-08 18:21:56,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:22:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-08 18:22:08,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:22:08,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835169250] [2021-10-08 18:22:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835169250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:22:08,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:22:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-08 18:22:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499536304] [2021-10-08 18:22:08,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 18:22:08,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:22:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 18:22:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:22:08,176 INFO L87 Difference]: Start difference. First operand 4118 states and 18467 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-08 18:22:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:22:09,557 INFO L93 Difference]: Finished difference Result 3706 states and 16581 transitions. [2021-10-08 18:22:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:22:09,562 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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 22 [2021-10-08 18:22:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:22:09,575 INFO L225 Difference]: With dead ends: 3706 [2021-10-08 18:22:09,575 INFO L226 Difference]: Without dead ends: 3706 [2021-10-08 18:22:09,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1173.5ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:22:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-10-08 18:22:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3706. [2021-10-08 18:22:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3695 states have (on average 4.487415426251691) internal successors, (16581), 3705 states have internal predecessors, (16581), 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) [2021-10-08 18:22:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 16581 transitions. [2021-10-08 18:22:09,652 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 16581 transitions. Word has length 22 [2021-10-08 18:22:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:22:09,652 INFO L470 AbstractCegarLoop]: Abstraction has 3706 states and 16581 transitions. [2021-10-08 18:22:09,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-08 18:22:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 16581 transitions. [2021-10-08 18:22:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:22:09,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:22:09,654 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:22:09,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 18:22:09,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:22:09,855 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-08 18:22:09,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:22:09,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1647507909, now seen corresponding path program 3 times [2021-10-08 18:22:09,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:22:09,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533760827] [2021-10-08 18:22:09,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:22:09,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:22:09,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:22:09,859 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:22:09,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 18:22:10,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:22:10,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:22:10,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 18:22:10,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:22:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:22:10,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:22:11,169 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 18:22:11,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-08 18:22:11,279 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:22:11,280 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 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-08 18:22:11,588 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 18:22:11,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 46 [2021-10-08 18:22:11,628 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 18:22:11,628 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 43 treesize of output 50 [2021-10-08 18:22:12,032 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-08 18:22:12,033 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 3 case distinctions, treesize of input 74 treesize of output 79 [2021-10-08 18:22:12,072 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-08 18:22:12,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 73 treesize of output 75 [2021-10-08 18:22:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:22:24,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:22:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:22:34,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:22:34,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533760827] [2021-10-08 18:22:34,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533760827] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:22:34,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:22:34,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-08 18:22:34,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878182510] [2021-10-08 18:22:34,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 18:22:34,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:22:34,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 18:22:34,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=466, Unknown=2, NotChecked=0, Total=552 [2021-10-08 18:22:34,803 INFO L87 Difference]: Start difference. First operand 3706 states and 16581 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 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) Received shutdown request... [2021-10-08 18:23:38,541 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:23:38,541 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:23:38,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 18:23:38,815 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:23:38,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-08 18:23:39,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:23:39,025 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). [2021-10-08 18:23:39,027 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:23:39,027 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:23:39,027 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 18:23:39,027 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 18:23:39,027 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-08 18:23:39,027 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-08 18:23:39,027 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-08 18:23:39,028 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-08 18:23:39,029 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-08 18:23:39,029 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-08 18:23:39,029 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-08 18:23:39,029 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:23:39,029 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:23:39,030 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:23:39,030 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:23:39,030 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:23:39,030 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:23:39,030 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:23:39,030 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:23:39,031 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 18:23:39,031 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 18:23:39,031 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 18:23:39,031 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 18:23:39,031 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 18:23:39,032 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 18:23:39,032 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-08 18:23:39,032 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-08 18:23:39,032 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-08 18:23:39,032 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-08 18:23:39,032 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-08 18:23:39,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-08 18:23:39,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-08 18:23:39,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-08 18:23:39,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-08 18:23:39,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-08 18:23:39,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-08 18:23:39,034 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-08 18:23:39,034 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:23:39,034 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:23:39,034 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:23:39,034 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:23:39,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 18:23:39,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:23:39,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:23:39,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 18:23:39,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 18:23:39,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-08 18:23:39,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-08 18:23:39,036 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-08 18:23:39,037 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-08 18:23:39,037 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-08 18:23:39,037 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-08 18:23:39,044 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:23:39,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:23:39,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:23:39 BasicIcfg [2021-10-08 18:23:39,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:23:39,047 INFO L168 Benchmark]: Toolchain (without parser) took 838565.44 ms. Allocated memory was 158.3 MB in the beginning and 1.1 GB in the end (delta: 931.1 MB). Free memory was 132.3 MB in the beginning and 665.1 MB in the end (delta: -532.7 MB). Peak memory consumption was 399.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:23:39,047 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:23:39,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.78 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 117.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-08 18:23:39,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.14 ms. Allocated memory is still 158.3 MB. Free memory was 117.9 MB in the beginning and 115.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:23:39,048 INFO L168 Benchmark]: Boogie Preprocessor took 49.55 ms. Allocated memory is still 158.3 MB. Free memory was 115.6 MB in the beginning and 113.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:23:39,049 INFO L168 Benchmark]: RCFGBuilder took 1876.02 ms. Allocated memory is still 158.3 MB. Free memory was 113.2 MB in the beginning and 108.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:23:39,049 INFO L168 Benchmark]: TraceAbstraction took 836165.39 ms. Allocated memory was 158.3 MB in the beginning and 1.1 GB in the end (delta: 931.1 MB). Free memory was 107.5 MB in the beginning and 665.1 MB in the end (delta: -557.6 MB). Peak memory consumption was 373.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:23:39,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 395.78 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 117.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 61.14 ms. Allocated memory is still 158.3 MB. Free memory was 117.9 MB in the beginning and 115.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.55 ms. Allocated memory is still 158.3 MB. Free memory was 115.6 MB in the beginning and 113.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1876.02 ms. Allocated memory is still 158.3 MB. Free memory was 113.2 MB in the beginning and 108.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 836165.39 ms. Allocated memory was 158.3 MB in the beginning and 1.1 GB in the end (delta: 931.1 MB). Free memory was 107.5 MB in the beginning and 665.1 MB in the end (delta: -557.6 MB). Peak memory consumption was 373.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 69209.0ms, 289 PlacesBefore, 86 PlacesAfterwards, 305 TransitionsBefore, 86 TransitionsAfterwards, 5962 CoEnabledTransitionPairs, 8 FixpointIterations, 204 TrivialSequentialCompositions, 88 ConcurrentSequentialCompositions, 45 TrivialYvCompositions, 13 ConcurrentYvCompositions, 16 ChoiceCompositions, 366 TotalNumberOfCompositions, 11895 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8396, positive: 8247, positive conditional: 0, positive unconditional: 8247, negative: 149, negative conditional: 0, negative unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3759, positive: 3715, positive conditional: 0, positive unconditional: 3715, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3759, positive: 3715, positive conditional: 0, positive unconditional: 3715, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7213, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7213, negative conditional: 0, negative unconditional: 7213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8396, positive: 4532, positive conditional: 0, positive unconditional: 4532, negative: 105, negative conditional: 0, negative unconditional: 105, unknown: 3759, unknown conditional: 0, unknown unconditional: 3759] , Statistics on independence cache: Total cache size (in pairs): 360, Positive cache size: 347, Positive conditional cache size: 0, Positive unconditional cache size: 347, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3706states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 348 locations, 67 error locations. Started 1 CEGAR loops. OverallTime: 835996.4ms, OverallIterations: 43, TraceHistogramMax: 14, EmptinessCheckTime: 65.8ms, AutomataDifference: 575578.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 69505.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2191 SDtfs, 24649 SDslu, 12046 SDs, 0 SdLazy, 24935 SolverSat, 3091 SolverUnsat, 71 SolverUnknown, 0 SolverNotchecked, 346497.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1343 GetRequests, 612 SyntacticMatches, 3 SemanticMatches, 728 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 293950.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5480occurred in iteration=0, InterpolantAutomatonStates: 508, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6538.1ms AutomataMinimizationTime, 42 MinimizatonAttempts, 191251 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 526.1ms SsaConstructionTime, 5787.2ms SatisfiabilityAnalysisTime, 159330.8ms InterpolantComputationTime, 555 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 1024 ConstructedInterpolants, 290 QuantifiedInterpolants, 22288 SizeOfPredicates, 362 NumberOfNonLiveVariables, 5866 ConjunctsInSsa, 626 ConjunctsInUnsatCore, 86 InterpolantComputations, 34 PerfectInterpolantSequences, 547/1080 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown