/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/mult-flipped-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:44:00,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:44:00,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:44:00,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:44:00,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:44:00,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:44:00,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:44:00,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:44:00,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:44:00,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:44:00,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:44:00,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:44:00,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:44:00,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:44:00,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:44:00,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:44:00,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:44:00,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:44:00,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:44:00,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:44:00,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:44:00,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:44:00,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:44:00,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:44:00,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:44:00,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:44:00,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:44:00,940 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:44:00,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:44:00,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:44:00,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:44:00,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:44:00,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:44:00,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:44:00,942 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:44:00,942 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:44:00,942 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:44:00,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:44:00,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:44:00,943 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:44:00,943 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:44:00,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:44:00,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:44:00,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:44:00,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:44:00,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:44:00,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:44:00,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:44:00,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:44:00,946 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:44:00,946 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:44:00,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:44:00,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:44:00,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:44:01,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:44:01,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:44:01,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:44:01,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:44:01,354 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:44:01,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2021-10-07 15:44:01,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fcd34f6/8b95854658dc45ff8e88b49ea6961c4d/FLAG59179eb67 [2021-10-07 15:44:02,085 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:44:02,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2021-10-07 15:44:02,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fcd34f6/8b95854658dc45ff8e88b49ea6961c4d/FLAG59179eb67 [2021-10-07 15:44:02,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fcd34f6/8b95854658dc45ff8e88b49ea6961c4d [2021-10-07 15:44:02,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:44:02,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:44:02,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:44:02,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:44:02,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:44:02,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:02,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4754db8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02, skipping insertion in model container [2021-10-07 15:44:02,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:02,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:44:02,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:44:02,808 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/mult-flipped-dist.wvr.c[2135,2148] [2021-10-07 15:44:02,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:44:02,839 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:44:02,883 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/mult-flipped-dist.wvr.c[2135,2148] [2021-10-07 15:44:02,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:44:02,920 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:44:02,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02 WrapperNode [2021-10-07 15:44:02,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:44:02,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:44:02,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:44:02,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:44:02,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:02,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:02,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:44:02,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:44:02,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:44:02,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:44:02,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:02,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:03,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:03,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:03,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:03,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:03,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:03,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:44:03,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:44:03,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:44:03,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:44:03,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (1/1) ... [2021-10-07 15:44:03,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:44:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:44:03,064 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) [2021-10-07 15:44:03,080 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 [2021-10-07 15:44:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:44:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:44:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:44:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:44:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:44:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:44:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:44:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:44:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:44:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:44:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:44:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:44:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:44:03,142 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:44:03,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:44:03,655 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-07 15:44:03,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:44:03 BoogieIcfgContainer [2021-10-07 15:44:03,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:44:03,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:44:03,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:44:03,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:44:03,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:44:02" (1/3) ... [2021-10-07 15:44:03,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6006de88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:44:03, skipping insertion in model container [2021-10-07 15:44:03,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:02" (2/3) ... [2021-10-07 15:44:03,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6006de88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:44:03, skipping insertion in model container [2021-10-07 15:44:03,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:44:03" (3/3) ... [2021-10-07 15:44:03,668 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2021-10-07 15:44:03,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:44:03,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-07 15:44:03,676 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:44:03,715 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,716 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,717 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,717 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,717 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,718 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,719 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,719 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,720 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,720 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,720 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,720 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,721 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,722 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,722 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,722 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,723 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,723 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,724 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,724 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,725 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,727 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,727 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,727 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,727 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,727 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,728 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,729 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,729 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,729 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,729 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,730 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,730 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,730 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,730 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,731 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,731 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,735 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,742 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,744 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,745 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,745 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,745 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:03,755 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:44:03,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:44:03,823 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 [2021-10-07 15:44:03,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-07 15:44:03,841 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:44:03,855 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 117 transitions, 258 flow [2021-10-07 15:44:03,858 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 117 transitions, 258 flow [2021-10-07 15:44:03,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 258 flow [2021-10-07 15:44:03,926 INFO L129 PetriNetUnfolder]: 7/114 cut-off events. [2021-10-07 15:44:03,927 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:44:03,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 7/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-07 15:44:03,944 INFO L116 LiptonReduction]: Number of co-enabled transitions 1680 [2021-10-07 15:44:13,370 INFO L131 LiptonReduction]: Checked pairs total: 1782 [2021-10-07 15:44:13,370 INFO L133 LiptonReduction]: Total number of compositions: 108 [2021-10-07 15:44:13,380 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 39 transitions, 102 flow [2021-10-07 15:44:13,410 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 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) [2021-10-07 15:44:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 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) [2021-10-07 15:44:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:44:13,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:13,421 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:44:13,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 437, now seen corresponding path program 1 times [2021-10-07 15:44:13,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:13,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338490321] [2021-10-07 15:44:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:13,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:13,447 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) [2021-10-07 15:44:13,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:44:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:13,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:44:13,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:13,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:13,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:13,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338490321] [2021-10-07 15:44:13,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338490321] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:13,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:13,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:44:13,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487200817] [2021-10-07 15:44:13,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:44:13,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:44:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:44:13,566 INFO L87 Difference]: Start difference. First operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-10-07 15:44:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:13,598 INFO L93 Difference]: Finished difference Result 208 states and 673 transitions. [2021-10-07 15:44:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:44:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2021-10-07 15:44:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:13,619 INFO L225 Difference]: With dead ends: 208 [2021-10-07 15:44:13,620 INFO L226 Difference]: Without dead ends: 208 [2021-10-07 15:44:13,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:44:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-07 15:44:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-10-07 15:44:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 197 states have (on average 3.416243654822335) internal successors, (673), 207 states have internal predecessors, (673), 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) [2021-10-07 15:44:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 673 transitions. [2021-10-07 15:44:13,716 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 673 transitions. Word has length 1 [2021-10-07 15:44:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:13,716 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 673 transitions. [2021-10-07 15:44:13,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-10-07 15:44:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 673 transitions. [2021-10-07 15:44:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:44:13,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:13,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:44:13,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:13,935 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 [2021-10-07 15:44:13,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:13,938 INFO L82 PathProgramCache]: Analyzing trace with hash 428495, now seen corresponding path program 1 times [2021-10-07 15:44:13,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:13,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381380121] [2021-10-07 15:44:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:13,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:13,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:13,942 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) [2021-10-07 15:44:13,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:44:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:14,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:14,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:14,249 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:44:14,250 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:44:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:14,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:14,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:14,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381380121] [2021-10-07 15:44:14,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381380121] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:14,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:14,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:44:14,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652145279] [2021-10-07 15:44:14,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:14,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:14,419 INFO L87 Difference]: Start difference. First operand 208 states and 673 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2021-10-07 15:44:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:14,482 INFO L93 Difference]: Finished difference Result 196 states and 640 transitions. [2021-10-07 15:44:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 3 [2021-10-07 15:44:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:14,488 INFO L225 Difference]: With dead ends: 196 [2021-10-07 15:44:14,488 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 15:44:14,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 15:44:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-07 15:44:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 187 states have (on average 3.4224598930481283) internal successors, (640), 195 states have internal predecessors, (640), 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) [2021-10-07 15:44:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 640 transitions. [2021-10-07 15:44:14,529 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 640 transitions. Word has length 3 [2021-10-07 15:44:14,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:14,530 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 640 transitions. [2021-10-07 15:44:14,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2021-10-07 15:44:14,530 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 640 transitions. [2021-10-07 15:44:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:44:14,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:14,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:44:14,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:14,731 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 [2021-10-07 15:44:14,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash 428497, now seen corresponding path program 1 times [2021-10-07 15:44:14,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:14,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216714686] [2021-10-07 15:44:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:14,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:14,745 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) [2021-10-07 15:44:14,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:44:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:14,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:44:14,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:14,848 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:44:14,848 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:44:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:14,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:14,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:14,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216714686] [2021-10-07 15:44:14,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216714686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:14,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:14,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:44:14,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636889515] [2021-10-07 15:44:14,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:44:14,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:14,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:44:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:14,910 INFO L87 Difference]: Start difference. First operand 196 states and 640 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-07 15:44:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:14,954 INFO L93 Difference]: Finished difference Result 184 states and 607 transitions. [2021-10-07 15:44:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-07 15:44:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:14,959 INFO L225 Difference]: With dead ends: 184 [2021-10-07 15:44:14,959 INFO L226 Difference]: Without dead ends: 184 [2021-10-07 15:44:14,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-07 15:44:14,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-10-07 15:44:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 3.4293785310734464) internal successors, (607), 183 states have internal predecessors, (607), 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) [2021-10-07 15:44:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 607 transitions. [2021-10-07 15:44:14,977 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 607 transitions. Word has length 3 [2021-10-07 15:44:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:14,978 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 607 transitions. [2021-10-07 15:44:14,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-07 15:44:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 607 transitions. [2021-10-07 15:44:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:44:14,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:14,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:44:14,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:15,191 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 [2021-10-07 15:44:15,192 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:15,193 INFO L82 PathProgramCache]: Analyzing trace with hash 411794085, now seen corresponding path program 1 times [2021-10-07 15:44:15,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:15,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81841767] [2021-10-07 15:44:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:15,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:15,196 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) [2021-10-07 15:44:15,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:44:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:15,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:44:15,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:15,292 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:44:15,292 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:44:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:15,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:15,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:15,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81841767] [2021-10-07 15:44:15,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81841767] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:15,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:15,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:44:15,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805652178] [2021-10-07 15:44:15,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:44:15,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:44:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:15,364 INFO L87 Difference]: Start difference. First operand 184 states and 607 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 15:44:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:15,407 INFO L93 Difference]: Finished difference Result 172 states and 574 transitions. [2021-10-07 15:44:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:15,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 [2021-10-07 15:44:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:15,410 INFO L225 Difference]: With dead ends: 172 [2021-10-07 15:44:15,410 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 15:44:15,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 15:44:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-07 15:44:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 3.437125748502994) internal successors, (574), 171 states have internal predecessors, (574), 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) [2021-10-07 15:44:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 574 transitions. [2021-10-07 15:44:15,458 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 574 transitions. Word has length 5 [2021-10-07 15:44:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:15,460 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 574 transitions. [2021-10-07 15:44:15,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 15:44:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 574 transitions. [2021-10-07 15:44:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:44:15,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:15,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:44:15,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:15,673 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 [2021-10-07 15:44:15,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash 411794086, now seen corresponding path program 1 times [2021-10-07 15:44:15,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:15,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295759704] [2021-10-07 15:44:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:15,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:15,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:15,679 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) [2021-10-07 15:44:15,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:44:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:15,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:15,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:15,898 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:44:15,899 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:44:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:16,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:16,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:16,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295759704] [2021-10-07 15:44:16,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295759704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:16,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:16,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:44:16,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090133469] [2021-10-07 15:44:16,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:16,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:16,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:16,141 INFO L87 Difference]: Start difference. First operand 172 states and 574 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:16,179 INFO L93 Difference]: Finished difference Result 160 states and 541 transitions. [2021-10-07 15:44:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:16,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:44:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:16,182 INFO L225 Difference]: With dead ends: 160 [2021-10-07 15:44:16,182 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 15:44:16,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 15:44:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-07 15:44:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 3.445859872611465) internal successors, (541), 159 states have internal predecessors, (541), 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) [2021-10-07 15:44:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 541 transitions. [2021-10-07 15:44:16,205 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 541 transitions. Word has length 5 [2021-10-07 15:44:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:16,205 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 541 transitions. [2021-10-07 15:44:16,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 541 transitions. [2021-10-07 15:44:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:44:16,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:16,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:16,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:16,414 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 [2021-10-07 15:44:16,415 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:16,416 INFO L82 PathProgramCache]: Analyzing trace with hash 597133037, now seen corresponding path program 1 times [2021-10-07 15:44:16,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:16,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249717821] [2021-10-07 15:44:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:16,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:16,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:16,419 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) [2021-10-07 15:44:16,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:44:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:16,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:16,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:16,524 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:44:16,525 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:44:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:16,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:16,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:16,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249717821] [2021-10-07 15:44:16,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249717821] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:16,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:16,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:44:16,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056195563] [2021-10-07 15:44:16,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:44:16,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:16,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:44:16,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:16,666 INFO L87 Difference]: Start difference. First operand 160 states and 541 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:16,706 INFO L93 Difference]: Finished difference Result 133 states and 433 transitions. [2021-10-07 15:44:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:16,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:44:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:16,708 INFO L225 Difference]: With dead ends: 133 [2021-10-07 15:44:16,709 INFO L226 Difference]: Without dead ends: 133 [2021-10-07 15:44:16,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-07 15:44:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-07 15:44:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 3.3053435114503817) internal successors, (433), 132 states have internal predecessors, (433), 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) [2021-10-07 15:44:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 433 transitions. [2021-10-07 15:44:16,716 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 433 transitions. Word has length 7 [2021-10-07 15:44:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:16,716 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 433 transitions. [2021-10-07 15:44:16,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 433 transitions. [2021-10-07 15:44:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:44:16,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:16,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:16,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:16,929 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 [2021-10-07 15:44:16,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:16,931 INFO L82 PathProgramCache]: Analyzing trace with hash 597133035, now seen corresponding path program 1 times [2021-10-07 15:44:16,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:16,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641112410] [2021-10-07 15:44:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:16,933 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:16,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:16,934 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) [2021-10-07 15:44:16,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:44:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:17,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:44:17,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:17,180 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:44:17,181 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 4 case distinctions, treesize of input 28 treesize of output 58 [2021-10-07 15:44:17,194 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 59 treesize of output 57 [2021-10-07 15:44:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:17,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:17,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:17,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641112410] [2021-10-07 15:44:17,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641112410] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:17,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:17,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:44:17,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580453036] [2021-10-07 15:44:17,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:17,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:17,523 INFO L87 Difference]: Start difference. First operand 133 states and 433 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 15:44:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:17,549 INFO L93 Difference]: Finished difference Result 106 states and 325 transitions. [2021-10-07 15:44:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:17,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2021-10-07 15:44:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:17,552 INFO L225 Difference]: With dead ends: 106 [2021-10-07 15:44:17,552 INFO L226 Difference]: Without dead ends: 106 [2021-10-07 15:44:17,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-07 15:44:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-07 15:44:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 3.0952380952380953) internal successors, (325), 105 states have internal predecessors, (325), 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) [2021-10-07 15:44:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 325 transitions. [2021-10-07 15:44:17,558 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 325 transitions. Word has length 7 [2021-10-07 15:44:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:17,558 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 325 transitions. [2021-10-07 15:44:17,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 15:44:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 325 transitions. [2021-10-07 15:44:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:44:17,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:17,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:17,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:17,761 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 [2021-10-07 15:44:17,762 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:17,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:17,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1204456054, now seen corresponding path program 1 times [2021-10-07 15:44:17,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:17,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378490468] [2021-10-07 15:44:17,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:17,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:17,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:17,766 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) [2021-10-07 15:44:17,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:44:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:17,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:17,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:18,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:18,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:18,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378490468] [2021-10-07 15:44:18,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378490468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:18,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:18,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:44:18,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458101683] [2021-10-07 15:44:18,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:18,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:18,176 INFO L87 Difference]: Start difference. First operand 106 states and 325 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-07 15:44:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:18,196 INFO L93 Difference]: Finished difference Result 203 states and 630 transitions. [2021-10-07 15:44:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:18,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 [2021-10-07 15:44:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:18,199 INFO L225 Difference]: With dead ends: 203 [2021-10-07 15:44:18,199 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 15:44:18,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 15:44:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-07 15:44:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.1384615384615384) internal successors, (612), 195 states have internal predecessors, (612), 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) [2021-10-07 15:44:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 612 transitions. [2021-10-07 15:44:18,209 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 612 transitions. Word has length 19 [2021-10-07 15:44:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:18,210 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 612 transitions. [2021-10-07 15:44:18,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-07 15:44:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 612 transitions. [2021-10-07 15:44:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:18,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:18,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:18,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:18,425 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 [2021-10-07 15:44:18,426 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:18,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1976410252, now seen corresponding path program 1 times [2021-10-07 15:44:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:18,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095213347] [2021-10-07 15:44:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:18,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:18,430 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) [2021-10-07 15:44:18,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:44:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:18,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:18,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:18,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095213347] [2021-10-07 15:44:18,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095213347] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:18,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:18,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-07 15:44:18,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157302908] [2021-10-07 15:44:18,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:18,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:18,652 INFO L87 Difference]: Start difference. First operand 196 states and 612 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-07 15:44:18,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:18,716 INFO L93 Difference]: Finished difference Result 260 states and 754 transitions. [2021-10-07 15:44:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:44:18,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2021-10-07 15:44:18,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:18,719 INFO L225 Difference]: With dead ends: 260 [2021-10-07 15:44:18,720 INFO L226 Difference]: Without dead ends: 216 [2021-10-07 15:44:18,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-07 15:44:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2021-10-07 15:44:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.102439024390244) internal successors, (636), 205 states have internal predecessors, (636), 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) [2021-10-07 15:44:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 636 transitions. [2021-10-07 15:44:18,730 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 636 transitions. Word has length 20 [2021-10-07 15:44:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:18,731 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 636 transitions. [2021-10-07 15:44:18,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-07 15:44:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 636 transitions. [2021-10-07 15:44:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:18,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:18,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:18,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:18,944 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 [2021-10-07 15:44:18,945 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash -738224560, now seen corresponding path program 1 times [2021-10-07 15:44:18,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:18,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294665527] [2021-10-07 15:44:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:18,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:18,949 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) [2021-10-07 15:44:18,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:44:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:19,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:19,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:19,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:19,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:19,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294665527] [2021-10-07 15:44:19,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294665527] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:44:19,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:44:19,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-10-07 15:44:19,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203497036] [2021-10-07 15:44:19,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:19,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:19,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:19,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:19,238 INFO L87 Difference]: Start difference. First operand 206 states and 636 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-07 15:44:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:19,323 INFO L93 Difference]: Finished difference Result 244 states and 744 transitions. [2021-10-07 15:44:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:44:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2021-10-07 15:44:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:19,326 INFO L225 Difference]: With dead ends: 244 [2021-10-07 15:44:19,327 INFO L226 Difference]: Without dead ends: 220 [2021-10-07 15:44:19,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-07 15:44:19,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-10-07 15:44:19,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.1598173515981736) internal successors, (692), 219 states have internal predecessors, (692), 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) [2021-10-07 15:44:19,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 692 transitions. [2021-10-07 15:44:19,337 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 692 transitions. Word has length 20 [2021-10-07 15:44:19,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:19,338 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 692 transitions. [2021-10-07 15:44:19,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-07 15:44:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 692 transitions. [2021-10-07 15:44:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:19,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:19,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:19,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:19,552 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 [2021-10-07 15:44:19,553 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:19,554 INFO L82 PathProgramCache]: Analyzing trace with hash -408626288, now seen corresponding path program 2 times [2021-10-07 15:44:19,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:19,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752841962] [2021-10-07 15:44:19,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:19,555 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:19,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:19,557 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) [2021-10-07 15:44:19,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:44:19,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:19,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:19,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:19,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:19,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:19,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:19,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752841962] [2021-10-07 15:44:19,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752841962] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:19,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:19,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-07 15:44:19,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251642360] [2021-10-07 15:44:19,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:44:19,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:44:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:44:19,923 INFO L87 Difference]: Start difference. First operand 220 states and 692 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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) [2021-10-07 15:44:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:20,269 INFO L93 Difference]: Finished difference Result 464 states and 1410 transitions. [2021-10-07 15:44:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:44:20,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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 20 [2021-10-07 15:44:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:20,274 INFO L225 Difference]: With dead ends: 464 [2021-10-07 15:44:20,274 INFO L226 Difference]: Without dead ends: 464 [2021-10-07 15:44:20,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-07 15:44:20,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 242. [2021-10-07 15:44:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 3.2904564315352696) internal successors, (793), 241 states have internal predecessors, (793), 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) [2021-10-07 15:44:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 793 transitions. [2021-10-07 15:44:20,289 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 793 transitions. Word has length 20 [2021-10-07 15:44:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:20,289 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 793 transitions. [2021-10-07 15:44:20,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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) [2021-10-07 15:44:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 793 transitions. [2021-10-07 15:44:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:20,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:20,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:20,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:20,504 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 [2021-10-07 15:44:20,505 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:20,506 INFO L82 PathProgramCache]: Analyzing trace with hash 336237092, now seen corresponding path program 3 times [2021-10-07 15:44:20,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:20,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59007808] [2021-10-07 15:44:20,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:20,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:20,509 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) [2021-10-07 15:44:20,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:44:20,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:20,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:20,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:20,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:20,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:20,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59007808] [2021-10-07 15:44:20,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59007808] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:20,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:20,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-07 15:44:20,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142679440] [2021-10-07 15:44:20,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:20,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:20,779 INFO L87 Difference]: Start difference. First operand 242 states and 793 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-07 15:44:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:20,839 INFO L93 Difference]: Finished difference Result 344 states and 1089 transitions. [2021-10-07 15:44:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:44:20,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2021-10-07 15:44:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:20,844 INFO L225 Difference]: With dead ends: 344 [2021-10-07 15:44:20,844 INFO L226 Difference]: Without dead ends: 332 [2021-10-07 15:44:20,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-07 15:44:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 262. [2021-10-07 15:44:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.3524904214559386) internal successors, (875), 261 states have internal predecessors, (875), 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) [2021-10-07 15:44:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 875 transitions. [2021-10-07 15:44:20,856 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 875 transitions. Word has length 20 [2021-10-07 15:44:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:20,856 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 875 transitions. [2021-10-07 15:44:20,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-07 15:44:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 875 transitions. [2021-10-07 15:44:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:20,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:20,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:20,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:21,071 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 [2021-10-07 15:44:21,072 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash 93513186, now seen corresponding path program 4 times [2021-10-07 15:44:21,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:21,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873366901] [2021-10-07 15:44:21,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:21,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:21,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:21,076 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) [2021-10-07 15:44:21,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:44:21,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:21,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:21,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:21,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:21,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:21,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:21,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873366901] [2021-10-07 15:44:21,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873366901] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:21,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:21,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-07 15:44:21,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644736240] [2021-10-07 15:44:21,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:44:21,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:44:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:44:21,375 INFO L87 Difference]: Start difference. First operand 262 states and 875 transitions. Second operand has 9 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) [2021-10-07 15:44:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:21,718 INFO L93 Difference]: Finished difference Result 444 states and 1413 transitions. [2021-10-07 15:44:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:44:21,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 20 [2021-10-07 15:44:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:21,730 INFO L225 Difference]: With dead ends: 444 [2021-10-07 15:44:21,730 INFO L226 Difference]: Without dead ends: 444 [2021-10-07 15:44:21,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-07 15:44:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 208. [2021-10-07 15:44:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.246376811594203) internal successors, (672), 207 states have internal predecessors, (672), 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) [2021-10-07 15:44:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 672 transitions. [2021-10-07 15:44:21,752 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 672 transitions. Word has length 20 [2021-10-07 15:44:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:21,752 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 672 transitions. [2021-10-07 15:44:21,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2021-10-07 15:44:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 672 transitions. [2021-10-07 15:44:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:21,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:21,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:21,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:21,968 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 [2021-10-07 15:44:21,969 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash -870010341, now seen corresponding path program 1 times [2021-10-07 15:44:21,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:21,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758065839] [2021-10-07 15:44:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:21,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:21,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:21,972 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) [2021-10-07 15:44:21,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:44:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:22,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:22,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:22,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:22,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:22,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758065839] [2021-10-07 15:44:22,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758065839] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:22,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:22,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-07 15:44:22,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460910363] [2021-10-07 15:44:22,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:44:22,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:22,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:44:22,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:22,187 INFO L87 Difference]: Start difference. First operand 208 states and 672 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-10-07 15:44:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:22,263 INFO L93 Difference]: Finished difference Result 236 states and 780 transitions. [2021-10-07 15:44:22,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:44:22,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 20 [2021-10-07 15:44:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:22,273 INFO L225 Difference]: With dead ends: 236 [2021-10-07 15:44:22,273 INFO L226 Difference]: Without dead ends: 236 [2021-10-07 15:44:22,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:22,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-07 15:44:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 176. [2021-10-07 15:44:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 3.2914285714285714) internal successors, (576), 175 states have internal predecessors, (576), 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) [2021-10-07 15:44:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 576 transitions. [2021-10-07 15:44:22,285 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 576 transitions. Word has length 20 [2021-10-07 15:44:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:22,286 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 576 transitions. [2021-10-07 15:44:22,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-10-07 15:44:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 576 transitions. [2021-10-07 15:44:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:44:22,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:22,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:22,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:22,500 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 [2021-10-07 15:44:22,500 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:22,501 INFO L82 PathProgramCache]: Analyzing trace with hash 324005071, now seen corresponding path program 1 times [2021-10-07 15:44:22,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:22,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967436977] [2021-10-07 15:44:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:22,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:22,504 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) [2021-10-07 15:44:22,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:44:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:22,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:22,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:22,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:22,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:22,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967436977] [2021-10-07 15:44:22,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967436977] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:44:22,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:44:22,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-10-07 15:44:22,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082721682] [2021-10-07 15:44:22,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:22,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:22,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:22,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:22,839 INFO L87 Difference]: Start difference. First operand 176 states and 576 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-07 15:44:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:22,922 INFO L93 Difference]: Finished difference Result 240 states and 796 transitions. [2021-10-07 15:44:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:44:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 [2021-10-07 15:44:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:22,926 INFO L225 Difference]: With dead ends: 240 [2021-10-07 15:44:22,926 INFO L226 Difference]: Without dead ends: 240 [2021-10-07 15:44:22,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-07 15:44:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 216. [2021-10-07 15:44:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.3302325581395347) internal successors, (716), 215 states have internal predecessors, (716), 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) [2021-10-07 15:44:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 716 transitions. [2021-10-07 15:44:22,937 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 716 transitions. Word has length 21 [2021-10-07 15:44:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:22,937 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 716 transitions. [2021-10-07 15:44:22,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-07 15:44:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 716 transitions. [2021-10-07 15:44:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:44:22,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:22,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:22,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:23,152 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 [2021-10-07 15:44:23,153 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:23,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:23,153 INFO L82 PathProgramCache]: Analyzing trace with hash -135147537, now seen corresponding path program 2 times [2021-10-07 15:44:23,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:23,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305295098] [2021-10-07 15:44:23,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:23,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:23,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:23,156 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) [2021-10-07 15:44:23,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:44:23,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:23,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:23,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:23,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:23,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:23,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:23,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305295098] [2021-10-07 15:44:23,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305295098] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:23,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:23,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-07 15:44:23,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563284479] [2021-10-07 15:44:23,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:44:23,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:23,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:44:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:44:23,601 INFO L87 Difference]: Start difference. First operand 216 states and 716 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-10-07 15:44:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:23,890 INFO L93 Difference]: Finished difference Result 558 states and 1770 transitions. [2021-10-07 15:44:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:44:23,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 [2021-10-07 15:44:23,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:23,896 INFO L225 Difference]: With dead ends: 558 [2021-10-07 15:44:23,896 INFO L226 Difference]: Without dead ends: 558 [2021-10-07 15:44:23,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-07 15:44:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 254. [2021-10-07 15:44:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 3.549407114624506) internal successors, (898), 253 states have internal predecessors, (898), 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) [2021-10-07 15:44:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 898 transitions. [2021-10-07 15:44:23,912 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 898 transitions. Word has length 21 [2021-10-07 15:44:23,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:23,913 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 898 transitions. [2021-10-07 15:44:23,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-10-07 15:44:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 898 transitions. [2021-10-07 15:44:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:44:23,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:23,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:23,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-07 15:44:24,128 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 [2021-10-07 15:44:24,128 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash -742107121, now seen corresponding path program 3 times [2021-10-07 15:44:24,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:24,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594931178] [2021-10-07 15:44:24,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:24,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:24,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:24,132 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) [2021-10-07 15:44:24,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:44:24,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:24,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:24,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:24,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:24,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:24,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:24,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594931178] [2021-10-07 15:44:24,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594931178] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:24,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:24,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-07 15:44:24,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114761932] [2021-10-07 15:44:24,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:24,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:24,433 INFO L87 Difference]: Start difference. First operand 254 states and 898 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-07 15:44:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:24,497 INFO L93 Difference]: Finished difference Result 396 states and 1316 transitions. [2021-10-07 15:44:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:44:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 [2021-10-07 15:44:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:24,502 INFO L225 Difference]: With dead ends: 396 [2021-10-07 15:44:24,502 INFO L226 Difference]: Without dead ends: 354 [2021-10-07 15:44:24,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-07 15:44:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2021-10-07 15:44:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 3.517684887459807) internal successors, (1094), 311 states have internal predecessors, (1094), 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) [2021-10-07 15:44:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1094 transitions. [2021-10-07 15:44:24,516 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1094 transitions. Word has length 21 [2021-10-07 15:44:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:24,517 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 1094 transitions. [2021-10-07 15:44:24,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-07 15:44:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1094 transitions. [2021-10-07 15:44:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:44:24,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:24,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:24,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:24,732 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 [2021-10-07 15:44:24,732 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1678582991, now seen corresponding path program 4 times [2021-10-07 15:44:24,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:24,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721935253] [2021-10-07 15:44:24,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:24,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:24,735 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) [2021-10-07 15:44:24,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:44:24,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:24,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:24,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:24,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:25,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:25,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:25,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721935253] [2021-10-07 15:44:25,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721935253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:25,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:25,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-07 15:44:25,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273104329] [2021-10-07 15:44:25,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:44:25,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:44:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:44:25,111 INFO L87 Difference]: Start difference. First operand 312 states and 1094 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-10-07 15:44:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:25,418 INFO L93 Difference]: Finished difference Result 576 states and 1925 transitions. [2021-10-07 15:44:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:44:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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 [2021-10-07 15:44:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:25,425 INFO L225 Difference]: With dead ends: 576 [2021-10-07 15:44:25,425 INFO L226 Difference]: Without dead ends: 576 [2021-10-07 15:44:25,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-07 15:44:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 256. [2021-10-07 15:44:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.5215686274509803) internal successors, (898), 255 states have internal predecessors, (898), 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) [2021-10-07 15:44:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 898 transitions. [2021-10-07 15:44:25,440 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 898 transitions. Word has length 21 [2021-10-07 15:44:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:25,441 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 898 transitions. [2021-10-07 15:44:25,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-10-07 15:44:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 898 transitions. [2021-10-07 15:44:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:44:25,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:25,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:25,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:25,655 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 [2021-10-07 15:44:25,656 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:25,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1838755633, now seen corresponding path program 1 times [2021-10-07 15:44:25,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:25,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318327257] [2021-10-07 15:44:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:25,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:25,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:25,659 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) [2021-10-07 15:44:25,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:44:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:25,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:25,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:26,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:26,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:26,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318327257] [2021-10-07 15:44:26,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318327257] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:26,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:26,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-07 15:44:26,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464920975] [2021-10-07 15:44:26,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:44:26,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:26,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:44:26,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:26,263 INFO L87 Difference]: Start difference. First operand 256 states and 898 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-10-07 15:44:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:26,426 INFO L93 Difference]: Finished difference Result 463 states and 1578 transitions. [2021-10-07 15:44:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:44:26,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 [2021-10-07 15:44:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:26,432 INFO L225 Difference]: With dead ends: 463 [2021-10-07 15:44:26,432 INFO L226 Difference]: Without dead ends: 456 [2021-10-07 15:44:26,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:26,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-10-07 15:44:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 370. [2021-10-07 15:44:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 3.6612466124661247) internal successors, (1351), 369 states have internal predecessors, (1351), 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) [2021-10-07 15:44:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1351 transitions. [2021-10-07 15:44:26,451 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1351 transitions. Word has length 22 [2021-10-07 15:44:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:26,452 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 1351 transitions. [2021-10-07 15:44:26,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-10-07 15:44:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1351 transitions. [2021-10-07 15:44:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:44:26,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:26,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:26,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:26,668 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 [2021-10-07 15:44:26,669 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:26,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1318758449, now seen corresponding path program 2 times [2021-10-07 15:44:26,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:26,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027047639] [2021-10-07 15:44:26,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:26,671 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:26,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:26,672 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) [2021-10-07 15:44:26,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:44:26,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:26,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:26,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:26,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:27,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:27,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:27,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027047639] [2021-10-07 15:44:27,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027047639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:27,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:27,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-07 15:44:27,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709348728] [2021-10-07 15:44:27,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:44:27,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:44:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:27,288 INFO L87 Difference]: Start difference. First operand 370 states and 1351 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2021-10-07 15:44:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:27,399 INFO L93 Difference]: Finished difference Result 559 states and 1962 transitions. [2021-10-07 15:44:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:44:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 [2021-10-07 15:44:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:27,406 INFO L225 Difference]: With dead ends: 559 [2021-10-07 15:44:27,406 INFO L226 Difference]: Without dead ends: 552 [2021-10-07 15:44:27,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-10-07 15:44:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 460. [2021-10-07 15:44:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 3.708061002178649) internal successors, (1702), 459 states have internal predecessors, (1702), 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) [2021-10-07 15:44:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1702 transitions. [2021-10-07 15:44:27,427 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1702 transitions. Word has length 22 [2021-10-07 15:44:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:27,427 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1702 transitions. [2021-10-07 15:44:27,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2021-10-07 15:44:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1702 transitions. [2021-10-07 15:44:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:44:27,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:27,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:27,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:27,642 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 [2021-10-07 15:44:27,643 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:27,644 INFO L82 PathProgramCache]: Analyzing trace with hash -286604957, now seen corresponding path program 3 times [2021-10-07 15:44:27,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:27,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182954619] [2021-10-07 15:44:27,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:27,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:27,647 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) [2021-10-07 15:44:27,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:44:27,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:44:27,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:27,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:27,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:28,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:28,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:28,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182954619] [2021-10-07 15:44:28,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182954619] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:28,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:28,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-07 15:44:28,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49184791] [2021-10-07 15:44:28,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:44:28,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:44:28,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:28,338 INFO L87 Difference]: Start difference. First operand 460 states and 1702 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-10-07 15:44:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:28,516 INFO L93 Difference]: Finished difference Result 613 states and 2209 transitions. [2021-10-07 15:44:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:44:28,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 [2021-10-07 15:44:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:28,523 INFO L225 Difference]: With dead ends: 613 [2021-10-07 15:44:28,523 INFO L226 Difference]: Without dead ends: 606 [2021-10-07 15:44:28,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-10-07 15:44:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 496. [2021-10-07 15:44:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 3.785858585858586) internal successors, (1874), 495 states have internal predecessors, (1874), 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) [2021-10-07 15:44:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1874 transitions. [2021-10-07 15:44:28,549 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1874 transitions. Word has length 22 [2021-10-07 15:44:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:28,549 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 1874 transitions. [2021-10-07 15:44:28,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-10-07 15:44:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1874 transitions. [2021-10-07 15:44:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:44:28,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:28,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:28,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:28,765 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 [2021-10-07 15:44:28,766 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:28,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1547955569, now seen corresponding path program 4 times [2021-10-07 15:44:28,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:28,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8172070] [2021-10-07 15:44:28,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:28,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:28,769 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) [2021-10-07 15:44:28,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:44:28,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:28,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:28,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:28,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:29,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:29,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:29,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8172070] [2021-10-07 15:44:29,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8172070] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:29,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:29,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-07 15:44:29,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631921399] [2021-10-07 15:44:29,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:44:29,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:44:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:29,428 INFO L87 Difference]: Start difference. First operand 496 states and 1874 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 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) [2021-10-07 15:44:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:29,639 INFO L93 Difference]: Finished difference Result 601 states and 2199 transitions. [2021-10-07 15:44:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:44:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 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) Word has length 22 [2021-10-07 15:44:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:29,646 INFO L225 Difference]: With dead ends: 601 [2021-10-07 15:44:29,646 INFO L226 Difference]: Without dead ends: 594 [2021-10-07 15:44:29,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-10-07 15:44:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 526. [2021-10-07 15:44:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.8114285714285714) internal successors, (2001), 525 states have internal predecessors, (2001), 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) [2021-10-07 15:44:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 2001 transitions. [2021-10-07 15:44:29,674 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 2001 transitions. Word has length 22 [2021-10-07 15:44:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:29,674 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 2001 transitions. [2021-10-07 15:44:29,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 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) [2021-10-07 15:44:29,675 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 2001 transitions. [2021-10-07 15:44:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:44:29,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:29,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:29,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:29,891 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 [2021-10-07 15:44:29,891 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1508494769, now seen corresponding path program 5 times [2021-10-07 15:44:29,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:29,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363697934] [2021-10-07 15:44:29,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:44:29,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:29,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:29,895 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) [2021-10-07 15:44:29,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:44:30,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:44:30,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:30,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:30,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:30,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:30,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:30,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363697934] [2021-10-07 15:44:30,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363697934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:30,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:30,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-07 15:44:30,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966307409] [2021-10-07 15:44:30,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:44:30,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:44:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:30,539 INFO L87 Difference]: Start difference. First operand 526 states and 2001 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2021-10-07 15:44:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:30,670 INFO L93 Difference]: Finished difference Result 701 states and 2568 transitions. [2021-10-07 15:44:30,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:44:30,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 [2021-10-07 15:44:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:30,677 INFO L225 Difference]: With dead ends: 701 [2021-10-07 15:44:30,678 INFO L226 Difference]: Without dead ends: 694 [2021-10-07 15:44:30,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-07 15:44:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 572. [2021-10-07 15:44:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 3.865148861646235) internal successors, (2207), 571 states have internal predecessors, (2207), 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) [2021-10-07 15:44:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 2207 transitions. [2021-10-07 15:44:30,703 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 2207 transitions. Word has length 22 [2021-10-07 15:44:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:30,703 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 2207 transitions. [2021-10-07 15:44:30,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2021-10-07 15:44:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 2207 transitions. [2021-10-07 15:44:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:44:30,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:30,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:30,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:30,919 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 [2021-10-07 15:44:30,919 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:30,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:30,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1050669731, now seen corresponding path program 6 times [2021-10-07 15:44:30,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:30,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607168083] [2021-10-07 15:44:30,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:44:30,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:30,923 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) [2021-10-07 15:44:30,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:44:31,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:44:31,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:31,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:31,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:31,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:31,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:31,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607168083] [2021-10-07 15:44:31,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607168083] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:31,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:31,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-07 15:44:31,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662712305] [2021-10-07 15:44:31,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:44:31,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:44:31,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:31,583 INFO L87 Difference]: Start difference. First operand 572 states and 2207 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-10-07 15:44:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:31,748 INFO L93 Difference]: Finished difference Result 677 states and 2532 transitions. [2021-10-07 15:44:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:44:31,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 [2021-10-07 15:44:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:31,756 INFO L225 Difference]: With dead ends: 677 [2021-10-07 15:44:31,756 INFO L226 Difference]: Without dead ends: 670 [2021-10-07 15:44:31,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:44:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-10-07 15:44:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 584. [2021-10-07 15:44:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 3.9056603773584904) internal successors, (2277), 583 states have internal predecessors, (2277), 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) [2021-10-07 15:44:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 2277 transitions. [2021-10-07 15:44:31,783 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 2277 transitions. Word has length 22 [2021-10-07 15:44:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:31,783 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 2277 transitions. [2021-10-07 15:44:31,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-10-07 15:44:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 2277 transitions. [2021-10-07 15:44:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:31,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:31,786 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:31,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:32,000 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 [2021-10-07 15:44:32,000 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash -164860721, now seen corresponding path program 7 times [2021-10-07 15:44:32,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:32,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890799664] [2021-10-07 15:44:32,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:44:32,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:32,004 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) [2021-10-07 15:44:32,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:44:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:32,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:44:32,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:32,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:32,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:32,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890799664] [2021-10-07 15:44:32,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890799664] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:32,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:32,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:44:32,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015763446] [2021-10-07 15:44:32,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:44:32,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:44:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:44:32,546 INFO L87 Difference]: Start difference. First operand 584 states and 2277 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2021-10-07 15:44:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:33,016 INFO L93 Difference]: Finished difference Result 858 states and 3157 transitions. [2021-10-07 15:44:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:44:33,017 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 23 [2021-10-07 15:44:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:33,023 INFO L225 Difference]: With dead ends: 858 [2021-10-07 15:44:33,023 INFO L226 Difference]: Without dead ends: 842 [2021-10-07 15:44:33,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:44:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-10-07 15:44:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 714. [2021-10-07 15:44:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 3.9579242636746144) internal successors, (2822), 713 states have internal predecessors, (2822), 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) [2021-10-07 15:44:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 2822 transitions. [2021-10-07 15:44:33,054 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 2822 transitions. Word has length 23 [2021-10-07 15:44:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:33,054 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 2822 transitions. [2021-10-07 15:44:33,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2021-10-07 15:44:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 2822 transitions. [2021-10-07 15:44:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:33,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:33,058 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:33,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-07 15:44:33,270 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 [2021-10-07 15:44:33,270 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:33,271 INFO L82 PathProgramCache]: Analyzing trace with hash -978789060, now seen corresponding path program 8 times [2021-10-07 15:44:33,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:33,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224221732] [2021-10-07 15:44:33,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:33,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:33,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:33,274 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) [2021-10-07 15:44:33,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:44:33,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:33,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:33,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:44:33,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:33,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:33,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:33,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224221732] [2021-10-07 15:44:33,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224221732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:33,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:33,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-10-07 15:44:33,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874376010] [2021-10-07 15:44:33,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:44:33,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:44:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:44:33,772 INFO L87 Difference]: Start difference. First operand 714 states and 2822 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:44:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:34,161 INFO L93 Difference]: Finished difference Result 878 states and 3204 transitions. [2021-10-07 15:44:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:44:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 23 [2021-10-07 15:44:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:34,170 INFO L225 Difference]: With dead ends: 878 [2021-10-07 15:44:34,170 INFO L226 Difference]: Without dead ends: 796 [2021-10-07 15:44:34,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 177.3ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:44:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-07 15:44:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 730. [2021-10-07 15:44:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 3.9039780521262) internal successors, (2846), 729 states have internal predecessors, (2846), 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) [2021-10-07 15:44:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 2846 transitions. [2021-10-07 15:44:34,200 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 2846 transitions. Word has length 23 [2021-10-07 15:44:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:34,201 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 2846 transitions. [2021-10-07 15:44:34,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:44:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 2846 transitions. [2021-10-07 15:44:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:34,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:34,204 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:34,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:34,417 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 [2021-10-07 15:44:34,417 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:34,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:34,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2034414153, now seen corresponding path program 9 times [2021-10-07 15:44:34,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:34,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250221127] [2021-10-07 15:44:34,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:34,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:34,420 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) [2021-10-07 15:44:34,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:44:34,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:34,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:34,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:34,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:34,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:35,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:35,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250221127] [2021-10-07 15:44:35,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250221127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:35,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:35,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-07 15:44:35,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792206837] [2021-10-07 15:44:35,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:44:35,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:44:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:44:35,120 INFO L87 Difference]: Start difference. First operand 730 states and 2846 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-10-07 15:44:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:36,231 INFO L93 Difference]: Finished difference Result 1500 states and 5536 transitions. [2021-10-07 15:44:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:44:36,231 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 23 [2021-10-07 15:44:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:36,240 INFO L225 Difference]: With dead ends: 1500 [2021-10-07 15:44:36,241 INFO L226 Difference]: Without dead ends: 1476 [2021-10-07 15:44:36,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 720.8ms TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:44:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-10-07 15:44:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 848. [2021-10-07 15:44:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.845336481700118) internal successors, (3257), 847 states have internal predecessors, (3257), 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) [2021-10-07 15:44:36,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3257 transitions. [2021-10-07 15:44:36,284 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3257 transitions. Word has length 23 [2021-10-07 15:44:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:36,285 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3257 transitions. [2021-10-07 15:44:36,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-10-07 15:44:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3257 transitions. [2021-10-07 15:44:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:36,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:36,289 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:36,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:36,502 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 [2021-10-07 15:44:36,502 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:36,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:36,503 INFO L82 PathProgramCache]: Analyzing trace with hash 950773641, now seen corresponding path program 10 times [2021-10-07 15:44:36,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:36,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106021819] [2021-10-07 15:44:36,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:36,505 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:36,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:36,506 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) [2021-10-07 15:44:36,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:44:36,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:36,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:36,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:36,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:36,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:37,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:37,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106021819] [2021-10-07 15:44:37,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106021819] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:37,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:37,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:37,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532927538] [2021-10-07 15:44:37,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:37,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:37,160 INFO L87 Difference]: Start difference. First operand 848 states and 3257 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2021-10-07 15:44:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:38,402 INFO L93 Difference]: Finished difference Result 1338 states and 4717 transitions. [2021-10-07 15:44:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:44:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 23 [2021-10-07 15:44:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:38,412 INFO L225 Difference]: With dead ends: 1338 [2021-10-07 15:44:38,412 INFO L226 Difference]: Without dead ends: 1338 [2021-10-07 15:44:38,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 712.2ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:44:38,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-10-07 15:44:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 896. [2021-10-07 15:44:38,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.880446927374302) internal successors, (3473), 895 states have internal predecessors, (3473), 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) [2021-10-07 15:44:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 3473 transitions. [2021-10-07 15:44:38,456 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 3473 transitions. Word has length 23 [2021-10-07 15:44:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:38,457 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 3473 transitions. [2021-10-07 15:44:38,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2021-10-07 15:44:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 3473 transitions. [2021-10-07 15:44:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:38,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:38,461 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:38,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:38,674 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 [2021-10-07 15:44:38,675 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash 657370634, now seen corresponding path program 11 times [2021-10-07 15:44:38,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:38,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634637645] [2021-10-07 15:44:38,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:44:38,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:38,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:38,678 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) [2021-10-07 15:44:38,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:44:38,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:38,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:38,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:44:38,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:39,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:39,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:39,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634637645] [2021-10-07 15:44:39,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634637645] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:39,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:39,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:44:39,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90717092] [2021-10-07 15:44:39,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:39,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:39,191 INFO L87 Difference]: Start difference. First operand 896 states and 3473 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2021-10-07 15:44:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:39,879 INFO L93 Difference]: Finished difference Result 1454 states and 5104 transitions. [2021-10-07 15:44:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:44:39,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 23 [2021-10-07 15:44:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:39,892 INFO L225 Difference]: With dead ends: 1454 [2021-10-07 15:44:39,892 INFO L226 Difference]: Without dead ends: 1410 [2021-10-07 15:44:39,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 311.8ms TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:44:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-10-07 15:44:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 994. [2021-10-07 15:44:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 993 states have (on average 3.9627391742195366) internal successors, (3935), 993 states have internal predecessors, (3935), 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) [2021-10-07 15:44:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 3935 transitions. [2021-10-07 15:44:39,937 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 3935 transitions. Word has length 23 [2021-10-07 15:44:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:39,937 INFO L470 AbstractCegarLoop]: Abstraction has 994 states and 3935 transitions. [2021-10-07 15:44:39,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2021-10-07 15:44:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 3935 transitions. [2021-10-07 15:44:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:39,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:39,942 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:39,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:40,154 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 [2021-10-07 15:44:40,155 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:40,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash -708402467, now seen corresponding path program 12 times [2021-10-07 15:44:40,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:40,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261076169] [2021-10-07 15:44:40,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:44:40,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:40,158 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) [2021-10-07 15:44:40,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:44:40,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:44:40,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:40,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:40,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:40,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:40,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:40,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261076169] [2021-10-07 15:44:40,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261076169] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:40,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:40,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-07 15:44:40,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749500168] [2021-10-07 15:44:40,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:44:40,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:44:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:44:40,805 INFO L87 Difference]: Start difference. First operand 994 states and 3935 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-10-07 15:44:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:42,031 INFO L93 Difference]: Finished difference Result 2142 states and 7641 transitions. [2021-10-07 15:44:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:44:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 23 [2021-10-07 15:44:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:42,044 INFO L225 Difference]: With dead ends: 2142 [2021-10-07 15:44:42,044 INFO L226 Difference]: Without dead ends: 2110 [2021-10-07 15:44:42,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 666.8ms TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:44:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2021-10-07 15:44:42,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1164. [2021-10-07 15:44:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 4.091143594153053) internal successors, (4758), 1163 states have internal predecessors, (4758), 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) [2021-10-07 15:44:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 4758 transitions. [2021-10-07 15:44:42,112 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 4758 transitions. Word has length 23 [2021-10-07 15:44:42,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:42,112 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 4758 transitions. [2021-10-07 15:44:42,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-10-07 15:44:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 4758 transitions. [2021-10-07 15:44:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:42,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:42,118 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:42,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:42,331 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 [2021-10-07 15:44:42,331 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:42,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:42,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1618167479, now seen corresponding path program 13 times [2021-10-07 15:44:42,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:42,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76456051] [2021-10-07 15:44:42,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:44:42,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:42,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:42,335 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) [2021-10-07 15:44:42,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:44:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:42,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:44:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:42,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:42,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76456051] [2021-10-07 15:44:42,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76456051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:42,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:42,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:42,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533910483] [2021-10-07 15:44:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:42,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:42,913 INFO L87 Difference]: Start difference. First operand 1164 states and 4758 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2021-10-07 15:44:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:43,856 INFO L93 Difference]: Finished difference Result 1840 states and 6896 transitions. [2021-10-07 15:44:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:44:43,857 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) Word has length 23 [2021-10-07 15:44:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:43,865 INFO L225 Difference]: With dead ends: 1840 [2021-10-07 15:44:43,865 INFO L226 Difference]: Without dead ends: 1818 [2021-10-07 15:44:43,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 435.4ms TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:44:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-10-07 15:44:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1236. [2021-10-07 15:44:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 4.098785425101215) internal successors, (5062), 1235 states have internal predecessors, (5062), 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) [2021-10-07 15:44:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 5062 transitions. [2021-10-07 15:44:43,940 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 5062 transitions. Word has length 23 [2021-10-07 15:44:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:43,940 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 5062 transitions. [2021-10-07 15:44:43,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2021-10-07 15:44:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 5062 transitions. [2021-10-07 15:44:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:43,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:43,946 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:43,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:44,160 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 [2021-10-07 15:44:44,160 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:44,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:44,161 INFO L82 PathProgramCache]: Analyzing trace with hash 641706304, now seen corresponding path program 14 times [2021-10-07 15:44:44,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:44,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535057016] [2021-10-07 15:44:44,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:44,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:44,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:44,164 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) [2021-10-07 15:44:44,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:44:44,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:44,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:44,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:44:44,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:44,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:44,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:44,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535057016] [2021-10-07 15:44:44,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535057016] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:44,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:44,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:44:44,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168131089] [2021-10-07 15:44:44,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:44,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:44,733 INFO L87 Difference]: Start difference. First operand 1236 states and 5062 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2021-10-07 15:44:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:45,144 INFO L93 Difference]: Finished difference Result 1684 states and 6228 transitions. [2021-10-07 15:44:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:44:45,145 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) Word has length 23 [2021-10-07 15:44:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:45,152 INFO L225 Difference]: With dead ends: 1684 [2021-10-07 15:44:45,152 INFO L226 Difference]: Without dead ends: 1668 [2021-10-07 15:44:45,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 193.6ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:44:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-10-07 15:44:45,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1250. [2021-10-07 15:44:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 4.0880704563650925) internal successors, (5106), 1249 states have internal predecessors, (5106), 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) [2021-10-07 15:44:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 5106 transitions. [2021-10-07 15:44:45,209 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 5106 transitions. Word has length 23 [2021-10-07 15:44:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:45,209 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 5106 transitions. [2021-10-07 15:44:45,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2021-10-07 15:44:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 5106 transitions. [2021-10-07 15:44:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:45,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:45,215 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:45,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:45,428 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 [2021-10-07 15:44:45,429 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash -887280373, now seen corresponding path program 15 times [2021-10-07 15:44:45,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:45,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926387334] [2021-10-07 15:44:45,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:45,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:45,432 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) [2021-10-07 15:44:45,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:44:45,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:45,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:45,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:45,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:45,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:46,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:46,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926387334] [2021-10-07 15:44:46,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926387334] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:46,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:46,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:44:46,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972351533] [2021-10-07 15:44:46,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:44:46,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:44:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:44:46,003 INFO L87 Difference]: Start difference. First operand 1250 states and 5106 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2021-10-07 15:44:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:46,574 INFO L93 Difference]: Finished difference Result 2306 states and 8503 transitions. [2021-10-07 15:44:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:44:46,577 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 23 [2021-10-07 15:44:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:46,588 INFO L225 Difference]: With dead ends: 2306 [2021-10-07 15:44:46,588 INFO L226 Difference]: Without dead ends: 2240 [2021-10-07 15:44:46,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 266.9ms TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:44:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-10-07 15:44:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 1454. [2021-10-07 15:44:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 4.204404679972471) internal successors, (6109), 1453 states have internal predecessors, (6109), 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) [2021-10-07 15:44:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 6109 transitions. [2021-10-07 15:44:46,675 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 6109 transitions. Word has length 23 [2021-10-07 15:44:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:46,676 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 6109 transitions. [2021-10-07 15:44:46,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2021-10-07 15:44:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 6109 transitions. [2021-10-07 15:44:46,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:46,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:46,683 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:46,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:46,895 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 [2021-10-07 15:44:46,896 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:46,897 INFO L82 PathProgramCache]: Analyzing trace with hash 511652001, now seen corresponding path program 16 times [2021-10-07 15:44:46,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:46,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190835587] [2021-10-07 15:44:46,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:46,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:46,899 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) [2021-10-07 15:44:46,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:44:47,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:47,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:47,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:44:47,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:47,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:47,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:47,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190835587] [2021-10-07 15:44:47,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190835587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:47,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:47,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:47,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412520843] [2021-10-07 15:44:47,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:47,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:47,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:47,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:47,503 INFO L87 Difference]: Start difference. First operand 1454 states and 6109 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:44:49,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:49,358 INFO L93 Difference]: Finished difference Result 2802 states and 10765 transitions. [2021-10-07 15:44:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:44:49,359 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 23 [2021-10-07 15:44:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:49,373 INFO L225 Difference]: With dead ends: 2802 [2021-10-07 15:44:49,373 INFO L226 Difference]: Without dead ends: 2768 [2021-10-07 15:44:49,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1078.6ms TimeCoverageRelationStatistics Valid=406, Invalid=1000, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:44:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2021-10-07 15:44:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 1634. [2021-10-07 15:44:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 4.2437232088181265) internal successors, (6930), 1633 states have internal predecessors, (6930), 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) [2021-10-07 15:44:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 6930 transitions. [2021-10-07 15:44:49,487 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 6930 transitions. Word has length 23 [2021-10-07 15:44:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:49,487 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 6930 transitions. [2021-10-07 15:44:49,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:44:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 6930 transitions. [2021-10-07 15:44:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:49,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:49,495 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:49,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:49,709 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 [2021-10-07 15:44:49,710 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:49,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1693839887, now seen corresponding path program 17 times [2021-10-07 15:44:49,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:49,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137258563] [2021-10-07 15:44:49,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:44:49,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:49,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:49,713 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) [2021-10-07 15:44:49,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:44:50,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:44:50,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:50,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:44:50,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:50,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:50,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:50,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137258563] [2021-10-07 15:44:50,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137258563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:50,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:50,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:44:50,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859800916] [2021-10-07 15:44:50,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:44:50,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:44:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:44:50,339 INFO L87 Difference]: Start difference. First operand 1634 states and 6930 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:44:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:50,868 INFO L93 Difference]: Finished difference Result 2616 states and 10158 transitions. [2021-10-07 15:44:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:44:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 23 [2021-10-07 15:44:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:50,881 INFO L225 Difference]: With dead ends: 2616 [2021-10-07 15:44:50,882 INFO L226 Difference]: Without dead ends: 2606 [2021-10-07 15:44:50,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 254.7ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:44:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-10-07 15:44:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1772. [2021-10-07 15:44:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 4.292490118577075) internal successors, (7602), 1771 states have internal predecessors, (7602), 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) [2021-10-07 15:44:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 7602 transitions. [2021-10-07 15:44:51,036 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 7602 transitions. Word has length 23 [2021-10-07 15:44:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:51,040 INFO L470 AbstractCegarLoop]: Abstraction has 1772 states and 7602 transitions. [2021-10-07 15:44:51,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:44:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 7602 transitions. [2021-10-07 15:44:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:51,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:51,049 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:51,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:51,260 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 [2021-10-07 15:44:51,260 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:51,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1860707365, now seen corresponding path program 18 times [2021-10-07 15:44:51,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:51,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330528329] [2021-10-07 15:44:51,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:44:51,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:51,264 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) [2021-10-07 15:44:51,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:44:51,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:44:51,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:51,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:51,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:51,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:52,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:52,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330528329] [2021-10-07 15:44:52,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330528329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:52,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:52,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-07 15:44:52,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841448442] [2021-10-07 15:44:52,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:44:52,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:44:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:44:52,077 INFO L87 Difference]: Start difference. First operand 1772 states and 7602 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-10-07 15:44:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:53,648 INFO L93 Difference]: Finished difference Result 2882 states and 10996 transitions. [2021-10-07 15:44:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:44:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 23 [2021-10-07 15:44:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:53,660 INFO L225 Difference]: With dead ends: 2882 [2021-10-07 15:44:53,661 INFO L226 Difference]: Without dead ends: 2828 [2021-10-07 15:44:53,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 841.6ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:44:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-10-07 15:44:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 1894. [2021-10-07 15:44:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 4.305863708399366) internal successors, (8151), 1893 states have internal predecessors, (8151), 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) [2021-10-07 15:44:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 8151 transitions. [2021-10-07 15:44:53,791 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 8151 transitions. Word has length 23 [2021-10-07 15:44:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:53,791 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 8151 transitions. [2021-10-07 15:44:53,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-10-07 15:44:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 8151 transitions. [2021-10-07 15:44:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:53,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:53,800 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:53,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:54,012 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 [2021-10-07 15:44:54,012 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:54,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:54,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1876371695, now seen corresponding path program 19 times [2021-10-07 15:44:54,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:54,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399699294] [2021-10-07 15:44:54,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:44:54,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:54,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:54,017 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) [2021-10-07 15:44:54,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:44:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:54,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:54,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:54,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:54,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:54,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399699294] [2021-10-07 15:44:54,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399699294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:54,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:54,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:54,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318834048] [2021-10-07 15:44:54,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:54,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:54,834 INFO L87 Difference]: Start difference. First operand 1894 states and 8151 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2021-10-07 15:44:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:57,072 INFO L93 Difference]: Finished difference Result 2894 states and 11047 transitions. [2021-10-07 15:44:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:44:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 23 [2021-10-07 15:44:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:57,080 INFO L225 Difference]: With dead ends: 2894 [2021-10-07 15:44:57,081 INFO L226 Difference]: Without dead ends: 2880 [2021-10-07 15:44:57,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1261.5ms TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:44:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2021-10-07 15:44:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1870. [2021-10-07 15:44:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 4.295345104333868) internal successors, (8028), 1869 states have internal predecessors, (8028), 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) [2021-10-07 15:44:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 8028 transitions. [2021-10-07 15:44:57,154 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 8028 transitions. Word has length 23 [2021-10-07 15:44:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:57,155 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 8028 transitions. [2021-10-07 15:44:57,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2021-10-07 15:44:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 8028 transitions. [2021-10-07 15:44:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:57,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:57,162 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:57,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:57,375 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 [2021-10-07 15:44:57,376 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:57,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1903955173, now seen corresponding path program 20 times [2021-10-07 15:44:57,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:57,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505250086] [2021-10-07 15:44:57,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:57,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:57,379 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) [2021-10-07 15:44:57,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:44:57,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:57,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:57,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:57,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:57,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:44:58,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:58,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505250086] [2021-10-07 15:44:58,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505250086] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:58,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:58,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:44:58,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530325989] [2021-10-07 15:44:58,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:44:58,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:58,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:44:58,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:44:58,116 INFO L87 Difference]: Start difference. First operand 1870 states and 8028 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-10-07 15:44:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:59,218 INFO L93 Difference]: Finished difference Result 3572 states and 14305 transitions. [2021-10-07 15:44:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:44:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 23 [2021-10-07 15:44:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:59,229 INFO L225 Difference]: With dead ends: 3572 [2021-10-07 15:44:59,230 INFO L226 Difference]: Without dead ends: 3494 [2021-10-07 15:44:59,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 698.4ms TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:44:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-10-07 15:44:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 2172. [2021-10-07 15:44:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 4.195762321510824) internal successors, (9109), 2171 states have internal predecessors, (9109), 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) [2021-10-07 15:44:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 9109 transitions. [2021-10-07 15:44:59,335 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 9109 transitions. Word has length 23 [2021-10-07 15:44:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:59,335 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 9109 transitions. [2021-10-07 15:44:59,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-10-07 15:44:59,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 9109 transitions. [2021-10-07 15:44:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:44:59,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:59,344 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:59,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:59,555 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 [2021-10-07 15:44:59,556 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:59,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash 258345821, now seen corresponding path program 21 times [2021-10-07 15:44:59,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:59,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830736874] [2021-10-07 15:44:59,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:59,558 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:59,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:59,559 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) [2021-10-07 15:44:59,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 15:44:59,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:59,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:59,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:44:59,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:00,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:00,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:00,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830736874] [2021-10-07 15:45:00,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830736874] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:00,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:00,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:45:00,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056538533] [2021-10-07 15:45:00,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:45:00,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:45:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:45:00,412 INFO L87 Difference]: Start difference. First operand 2172 states and 9109 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-10-07 15:45:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:02,275 INFO L93 Difference]: Finished difference Result 3894 states and 15254 transitions. [2021-10-07 15:45:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:45:02,277 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 23 [2021-10-07 15:45:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:02,289 INFO L225 Difference]: With dead ends: 3894 [2021-10-07 15:45:02,289 INFO L226 Difference]: Without dead ends: 3790 [2021-10-07 15:45:02,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1186.1ms TimeCoverageRelationStatistics Valid=285, Invalid=1047, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:45:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-10-07 15:45:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 2494. [2021-10-07 15:45:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2493 states have (on average 4.199759326113116) internal successors, (10470), 2493 states have internal predecessors, (10470), 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) [2021-10-07 15:45:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 10470 transitions. [2021-10-07 15:45:02,459 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 10470 transitions. Word has length 23 [2021-10-07 15:45:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:02,463 INFO L470 AbstractCegarLoop]: Abstraction has 2494 states and 10470 transitions. [2021-10-07 15:45:02,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-10-07 15:45:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 10470 transitions. [2021-10-07 15:45:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:02,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:02,477 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:02,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:02,690 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 [2021-10-07 15:45:02,690 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:02,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:02,691 INFO L82 PathProgramCache]: Analyzing trace with hash -486266789, now seen corresponding path program 22 times [2021-10-07 15:45:02,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:02,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927050534] [2021-10-07 15:45:02,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:45:02,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:02,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:02,693 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) [2021-10-07 15:45:02,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 15:45:03,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:45:03,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:03,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:03,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:03,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:03,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:03,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927050534] [2021-10-07 15:45:03,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927050534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:03,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:03,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-07 15:45:03,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335321738] [2021-10-07 15:45:03,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:45:03,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:45:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:45:03,432 INFO L87 Difference]: Start difference. First operand 2494 states and 10470 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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) [2021-10-07 15:45:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:04,304 INFO L93 Difference]: Finished difference Result 3112 states and 12429 transitions. [2021-10-07 15:45:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:45:04,305 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:04,346 INFO L225 Difference]: With dead ends: 3112 [2021-10-07 15:45:04,347 INFO L226 Difference]: Without dead ends: 3088 [2021-10-07 15:45:04,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 421.5ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:45:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2021-10-07 15:45:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 2522. [2021-10-07 15:45:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2521 states have (on average 4.186433954779849) internal successors, (10554), 2521 states have internal predecessors, (10554), 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) [2021-10-07 15:45:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 10554 transitions. [2021-10-07 15:45:04,449 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 10554 transitions. Word has length 23 [2021-10-07 15:45:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:04,449 INFO L470 AbstractCegarLoop]: Abstraction has 2522 states and 10554 transitions. [2021-10-07 15:45:04,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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) [2021-10-07 15:45:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 10554 transitions. [2021-10-07 15:45:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:04,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:04,461 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:04,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:04,674 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 [2021-10-07 15:45:04,675 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:04,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:04,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1928701306, now seen corresponding path program 23 times [2021-10-07 15:45:04,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:04,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353138844] [2021-10-07 15:45:04,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:45:04,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:04,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:04,678 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) [2021-10-07 15:45:04,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 15:45:05,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:45:05,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:05,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:05,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:05,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:05,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:05,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353138844] [2021-10-07 15:45:05,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353138844] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:05,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:05,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 15:45:05,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66776403] [2021-10-07 15:45:05,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:45:05,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:45:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:45:05,533 INFO L87 Difference]: Start difference. First operand 2522 states and 10554 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2021-10-07 15:45:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:06,271 INFO L93 Difference]: Finished difference Result 3296 states and 13285 transitions. [2021-10-07 15:45:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:45:06,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:06,285 INFO L225 Difference]: With dead ends: 3296 [2021-10-07 15:45:06,285 INFO L226 Difference]: Without dead ends: 3268 [2021-10-07 15:45:06,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 356.6ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:45:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-10-07 15:45:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2696. [2021-10-07 15:45:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2695 states have (on average 4.2690166975881265) internal successors, (11505), 2695 states have internal predecessors, (11505), 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) [2021-10-07 15:45:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 11505 transitions. [2021-10-07 15:45:06,417 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 11505 transitions. Word has length 23 [2021-10-07 15:45:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:06,417 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 11505 transitions. [2021-10-07 15:45:06,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2021-10-07 15:45:06,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 11505 transitions. [2021-10-07 15:45:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:06,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:06,428 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:06,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:06,641 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 [2021-10-07 15:45:06,642 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:06,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash -698422407, now seen corresponding path program 24 times [2021-10-07 15:45:06,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:06,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331867475] [2021-10-07 15:45:06,644 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:45:06,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:06,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:06,645 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) [2021-10-07 15:45:06,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 15:45:07,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:45:07,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:07,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:45:07,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:07,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:07,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:07,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331867475] [2021-10-07 15:45:07,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331867475] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:07,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:07,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:07,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020471444] [2021-10-07 15:45:07,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:07,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:07,348 INFO L87 Difference]: Start difference. First operand 2696 states and 11505 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:45:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:08,700 INFO L93 Difference]: Finished difference Result 4178 states and 16534 transitions. [2021-10-07 15:45:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:45:08,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:08,712 INFO L225 Difference]: With dead ends: 4178 [2021-10-07 15:45:08,712 INFO L226 Difference]: Without dead ends: 4156 [2021-10-07 15:45:08,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 608.4ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:45:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2021-10-07 15:45:08,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 2920. [2021-10-07 15:45:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2919 states have (on average 4.347721822541966) internal successors, (12691), 2919 states have internal predecessors, (12691), 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) [2021-10-07 15:45:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 12691 transitions. [2021-10-07 15:45:08,844 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 12691 transitions. Word has length 23 [2021-10-07 15:45:08,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:08,844 INFO L470 AbstractCegarLoop]: Abstraction has 2920 states and 12691 transitions. [2021-10-07 15:45:08,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:45:08,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 12691 transitions. [2021-10-07 15:45:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:08,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:08,857 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:08,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:09,069 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 [2021-10-07 15:45:09,070 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash 692010924, now seen corresponding path program 25 times [2021-10-07 15:45:09,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:09,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082486849] [2021-10-07 15:45:09,072 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:45:09,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:09,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:09,074 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) [2021-10-07 15:45:09,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 15:45:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:09,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:09,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:09,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:09,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:09,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082486849] [2021-10-07 15:45:09,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082486849] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:09,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:09,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:09,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316283450] [2021-10-07 15:45:09,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:09,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:09,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:09,877 INFO L87 Difference]: Start difference. First operand 2920 states and 12691 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:45:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:10,456 INFO L93 Difference]: Finished difference Result 3516 states and 14481 transitions. [2021-10-07 15:45:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:45:10,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 23 [2021-10-07 15:45:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:10,466 INFO L225 Difference]: With dead ends: 3516 [2021-10-07 15:45:10,466 INFO L226 Difference]: Without dead ends: 3504 [2021-10-07 15:45:10,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 425.2ms TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:45:10,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2021-10-07 15:45:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 2958. [2021-10-07 15:45:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 4.329387893134934) internal successors, (12802), 2957 states have internal predecessors, (12802), 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) [2021-10-07 15:45:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 12802 transitions. [2021-10-07 15:45:10,575 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 12802 transitions. Word has length 23 [2021-10-07 15:45:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:10,576 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 12802 transitions. [2021-10-07 15:45:10,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:45:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 12802 transitions. [2021-10-07 15:45:10,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:10,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:10,588 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:10,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:10,799 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 [2021-10-07 15:45:10,800 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash -29482205, now seen corresponding path program 26 times [2021-10-07 15:45:10,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:10,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446297000] [2021-10-07 15:45:10,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:45:10,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:10,802 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:10,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 15:45:11,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:45:11,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:11,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:11,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:11,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:11,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:11,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446297000] [2021-10-07 15:45:11,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446297000] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:11,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:11,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:11,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303066895] [2021-10-07 15:45:11,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:11,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:11,628 INFO L87 Difference]: Start difference. First operand 2958 states and 12802 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) [2021-10-07 15:45:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:12,938 INFO L93 Difference]: Finished difference Result 4392 states and 16993 transitions. [2021-10-07 15:45:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:45:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 23 [2021-10-07 15:45:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:12,955 INFO L225 Difference]: With dead ends: 4392 [2021-10-07 15:45:12,955 INFO L226 Difference]: Without dead ends: 4382 [2021-10-07 15:45:12,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 666.7ms TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:45:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2021-10-07 15:45:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 2934. [2021-10-07 15:45:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2933 states have (on average 4.317763382202523) internal successors, (12664), 2933 states have internal predecessors, (12664), 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) [2021-10-07 15:45:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 12664 transitions. [2021-10-07 15:45:13,133 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 12664 transitions. Word has length 23 [2021-10-07 15:45:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:13,133 INFO L470 AbstractCegarLoop]: Abstraction has 2934 states and 12664 transitions. [2021-10-07 15:45:13,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) [2021-10-07 15:45:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 12664 transitions. [2021-10-07 15:45:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:13,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:13,147 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:13,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:13,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:13,361 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash -63781063, now seen corresponding path program 27 times [2021-10-07 15:45:13,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:13,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121036922] [2021-10-07 15:45:13,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:45:13,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:13,364 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:13,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 15:45:13,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:45:13,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:13,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:13,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:14,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:14,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:14,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121036922] [2021-10-07 15:45:14,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121036922] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:14,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:14,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:14,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106845166] [2021-10-07 15:45:14,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:14,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:14,302 INFO L87 Difference]: Start difference. First operand 2934 states and 12664 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:45:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:15,215 INFO L93 Difference]: Finished difference Result 3282 states and 13554 transitions. [2021-10-07 15:45:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:45:15,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:15,227 INFO L225 Difference]: With dead ends: 3282 [2021-10-07 15:45:15,228 INFO L226 Difference]: Without dead ends: 3254 [2021-10-07 15:45:15,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 484.8ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:45:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-10-07 15:45:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 2968. [2021-10-07 15:45:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2967 states have (on average 4.297607010448265) internal successors, (12751), 2967 states have internal predecessors, (12751), 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) [2021-10-07 15:45:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 12751 transitions. [2021-10-07 15:45:15,368 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 12751 transitions. Word has length 23 [2021-10-07 15:45:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:15,368 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 12751 transitions. [2021-10-07 15:45:15,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:45:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 12751 transitions. [2021-10-07 15:45:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:15,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:15,377 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:15,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:15,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:15,579 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash 269525198, now seen corresponding path program 28 times [2021-10-07 15:45:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:15,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419832979] [2021-10-07 15:45:15,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:45:15,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:15,582 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:15,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 15:45:16,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:45:16,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:16,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:16,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:16,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:16,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:16,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419832979] [2021-10-07 15:45:16,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419832979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:16,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:16,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:16,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890623217] [2021-10-07 15:45:16,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:16,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:16,320 INFO L87 Difference]: Start difference. First operand 2968 states and 12751 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:45:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:17,361 INFO L93 Difference]: Finished difference Result 3578 states and 14605 transitions. [2021-10-07 15:45:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:45:17,361 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 23 [2021-10-07 15:45:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:17,370 INFO L225 Difference]: With dead ends: 3578 [2021-10-07 15:45:17,371 INFO L226 Difference]: Without dead ends: 3572 [2021-10-07 15:45:17,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 475.6ms TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:45:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-10-07 15:45:17,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 3020. [2021-10-07 15:45:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3019 states have (on average 4.286518714806228) internal successors, (12941), 3019 states have internal predecessors, (12941), 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) [2021-10-07 15:45:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 12941 transitions. [2021-10-07 15:45:17,463 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 12941 transitions. Word has length 23 [2021-10-07 15:45:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:17,463 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 12941 transitions. [2021-10-07 15:45:17,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:45:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 12941 transitions. [2021-10-07 15:45:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:17,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:17,471 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:17,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:17,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:17,672 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:17,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1284243061, now seen corresponding path program 29 times [2021-10-07 15:45:17,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:17,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723718932] [2021-10-07 15:45:17,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:45:17,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:17,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:17,675 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:17,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 15:45:18,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:45:18,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:18,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:18,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:18,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:18,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:18,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723718932] [2021-10-07 15:45:18,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723718932] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:18,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:18,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:18,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732594671] [2021-10-07 15:45:18,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:18,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:18,449 INFO L87 Difference]: Start difference. First operand 3020 states and 12941 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:45:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:19,256 INFO L93 Difference]: Finished difference Result 4566 states and 18633 transitions. [2021-10-07 15:45:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:45:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:19,272 INFO L225 Difference]: With dead ends: 4566 [2021-10-07 15:45:19,273 INFO L226 Difference]: Without dead ends: 4548 [2021-10-07 15:45:19,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 476.7ms TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:45:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-10-07 15:45:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 3330. [2021-10-07 15:45:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3329 states have (on average 4.3163112045659355) internal successors, (14369), 3329 states have internal predecessors, (14369), 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) [2021-10-07 15:45:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 14369 transitions. [2021-10-07 15:45:19,410 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 14369 transitions. Word has length 23 [2021-10-07 15:45:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:19,410 INFO L470 AbstractCegarLoop]: Abstraction has 3330 states and 14369 transitions. [2021-10-07 15:45:19,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:45:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 14369 transitions. [2021-10-07 15:45:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:19,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:19,421 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:19,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-07 15:45:19,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:19,622 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:19,623 INFO L82 PathProgramCache]: Analyzing trace with hash -190151473, now seen corresponding path program 30 times [2021-10-07 15:45:19,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:19,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390613757] [2021-10-07 15:45:19,625 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:45:19,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:19,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:19,626 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:19,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 15:45:20,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:45:20,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:20,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:20,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:20,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:20,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:20,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390613757] [2021-10-07 15:45:20,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390613757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:20,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:20,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:20,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416490493] [2021-10-07 15:45:20,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:20,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:20,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:20,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:20,395 INFO L87 Difference]: Start difference. First operand 3330 states and 14369 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-10-07 15:45:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:20,897 INFO L93 Difference]: Finished difference Result 6044 states and 24179 transitions. [2021-10-07 15:45:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:45:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 23 [2021-10-07 15:45:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:20,915 INFO L225 Difference]: With dead ends: 6044 [2021-10-07 15:45:20,915 INFO L226 Difference]: Without dead ends: 6012 [2021-10-07 15:45:20,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 228.6ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:45:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2021-10-07 15:45:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 3824. [2021-10-07 15:45:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3823 states have (on average 4.386084227046822) internal successors, (16768), 3823 states have internal predecessors, (16768), 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) [2021-10-07 15:45:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 16768 transitions. [2021-10-07 15:45:21,088 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 16768 transitions. Word has length 23 [2021-10-07 15:45:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:21,088 INFO L470 AbstractCegarLoop]: Abstraction has 3824 states and 16768 transitions. [2021-10-07 15:45:21,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-10-07 15:45:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 16768 transitions. [2021-10-07 15:45:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:21,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:21,099 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:21,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:21,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:21,307 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:21,308 INFO L82 PathProgramCache]: Analyzing trace with hash -786736883, now seen corresponding path program 31 times [2021-10-07 15:45:21,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:21,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929385280] [2021-10-07 15:45:21,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:45:21,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:21,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:21,310 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:21,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 15:45:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:21,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:21,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:21,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:22,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929385280] [2021-10-07 15:45:22,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929385280] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:22,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:22,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:22,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828869793] [2021-10-07 15:45:22,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:22,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:22,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:22,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:22,097 INFO L87 Difference]: Start difference. First operand 3824 states and 16768 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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) [2021-10-07 15:45:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:22,793 INFO L93 Difference]: Finished difference Result 5742 states and 24424 transitions. [2021-10-07 15:45:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:45:22,794 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 23 [2021-10-07 15:45:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:22,811 INFO L225 Difference]: With dead ends: 5742 [2021-10-07 15:45:22,811 INFO L226 Difference]: Without dead ends: 5624 [2021-10-07 15:45:22,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 433.4ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:45:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5624 states. [2021-10-07 15:45:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 4522. [2021-10-07 15:45:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4521 states have (on average 4.42844503428445) internal successors, (20021), 4521 states have internal predecessors, (20021), 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) [2021-10-07 15:45:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 20021 transitions. [2021-10-07 15:45:22,993 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 20021 transitions. Word has length 23 [2021-10-07 15:45:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:22,993 INFO L470 AbstractCegarLoop]: Abstraction has 4522 states and 20021 transitions. [2021-10-07 15:45:22,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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) [2021-10-07 15:45:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 20021 transitions. [2021-10-07 15:45:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:23,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:23,010 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:23,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-07 15:45:23,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:23,211 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:23,212 INFO L82 PathProgramCache]: Analyzing trace with hash -499455579, now seen corresponding path program 32 times [2021-10-07 15:45:23,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:23,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145642937] [2021-10-07 15:45:23,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:45:23,214 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:23,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:23,215 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:23,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 15:45:23,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:45:23,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:23,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:23,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:23,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:24,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:24,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145642937] [2021-10-07 15:45:24,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145642937] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:24,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:24,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:45:24,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052706059] [2021-10-07 15:45:24,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:24,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:24,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:24,136 INFO L87 Difference]: Start difference. First operand 4522 states and 20021 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2021-10-07 15:45:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:26,184 INFO L93 Difference]: Finished difference Result 7296 states and 30322 transitions. [2021-10-07 15:45:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:45:26,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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 23 [2021-10-07 15:45:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:26,208 INFO L225 Difference]: With dead ends: 7296 [2021-10-07 15:45:26,208 INFO L226 Difference]: Without dead ends: 7264 [2021-10-07 15:45:26,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1285.9ms TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:45:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7264 states. [2021-10-07 15:45:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7264 to 5188. [2021-10-07 15:45:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 5187 states have (on average 4.549450549450549) internal successors, (23598), 5187 states have internal predecessors, (23598), 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) [2021-10-07 15:45:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 23598 transitions. [2021-10-07 15:45:26,395 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 23598 transitions. Word has length 23 [2021-10-07 15:45:26,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:26,395 INFO L470 AbstractCegarLoop]: Abstraction has 5188 states and 23598 transitions. [2021-10-07 15:45:26,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2021-10-07 15:45:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 23598 transitions. [2021-10-07 15:45:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:26,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:26,415 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:26,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:26,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:26,629 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:26,630 INFO L82 PathProgramCache]: Analyzing trace with hash -620288823, now seen corresponding path program 33 times [2021-10-07 15:45:26,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:26,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009115253] [2021-10-07 15:45:26,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:45:26,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:26,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:26,633 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:26,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 15:45:27,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:45:27,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:27,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:27,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:27,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:27,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009115253] [2021-10-07 15:45:27,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009115253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:27,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:27,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:45:27,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478298184] [2021-10-07 15:45:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:27,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:27,612 INFO L87 Difference]: Start difference. First operand 5188 states and 23598 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:45:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:28,929 INFO L93 Difference]: Finished difference Result 7260 states and 31042 transitions. [2021-10-07 15:45:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:45:28,929 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:28,959 INFO L225 Difference]: With dead ends: 7260 [2021-10-07 15:45:28,959 INFO L226 Difference]: Without dead ends: 7232 [2021-10-07 15:45:28,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 816.0ms TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:45:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7232 states. [2021-10-07 15:45:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7232 to 5334. [2021-10-07 15:45:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 5333 states have (on average 4.5561597599849994) internal successors, (24298), 5333 states have internal predecessors, (24298), 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) [2021-10-07 15:45:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 24298 transitions. [2021-10-07 15:45:29,189 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 24298 transitions. Word has length 23 [2021-10-07 15:45:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:29,189 INFO L470 AbstractCegarLoop]: Abstraction has 5334 states and 24298 transitions. [2021-10-07 15:45:29,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:45:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 24298 transitions. [2021-10-07 15:45:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:29,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:29,202 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:29,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:29,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:29,403 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:29,404 INFO L82 PathProgramCache]: Analyzing trace with hash -575079941, now seen corresponding path program 34 times [2021-10-07 15:45:29,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:29,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297772871] [2021-10-07 15:45:29,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:45:29,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:29,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:29,406 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:29,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-07 15:45:29,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:45:29,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:29,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:29,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:29,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:30,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:30,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297772871] [2021-10-07 15:45:30,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297772871] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:30,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:30,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:45:30,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114804537] [2021-10-07 15:45:30,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:45:30,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:45:30,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:30,176 INFO L87 Difference]: Start difference. First operand 5334 states and 24298 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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) [2021-10-07 15:45:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:31,146 INFO L93 Difference]: Finished difference Result 5784 states and 25576 transitions. [2021-10-07 15:45:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:45:31,147 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 23 [2021-10-07 15:45:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:31,165 INFO L225 Difference]: With dead ends: 5784 [2021-10-07 15:45:31,166 INFO L226 Difference]: Without dead ends: 5744 [2021-10-07 15:45:31,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 478.9ms TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:45:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2021-10-07 15:45:31,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5398. [2021-10-07 15:45:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5397 states have (on average 4.5414118954974985) internal successors, (24510), 5397 states have internal predecessors, (24510), 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) [2021-10-07 15:45:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 24510 transitions. [2021-10-07 15:45:31,316 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 24510 transitions. Word has length 23 [2021-10-07 15:45:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:31,316 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 24510 transitions. [2021-10-07 15:45:31,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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) [2021-10-07 15:45:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 24510 transitions. [2021-10-07 15:45:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:31,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:31,329 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:31,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-07 15:45:31,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:31,530 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:31,531 INFO L82 PathProgramCache]: Analyzing trace with hash -869871019, now seen corresponding path program 35 times [2021-10-07 15:45:31,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:31,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53000375] [2021-10-07 15:45:31,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:45:31,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:31,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:31,534 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:31,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-07 15:45:31,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:45:31,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:32,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:32,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:32,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:32,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:32,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53000375] [2021-10-07 15:45:32,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53000375] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:32,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:32,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:45:32,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998548628] [2021-10-07 15:45:32,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:45:32,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:45:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:45:32,465 INFO L87 Difference]: Start difference. First operand 5398 states and 24510 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-10-07 15:45:34,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:34,038 INFO L93 Difference]: Finished difference Result 8610 states and 35972 transitions. [2021-10-07 15:45:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:45:34,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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 23 [2021-10-07 15:45:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:34,125 INFO L225 Difference]: With dead ends: 8610 [2021-10-07 15:45:34,125 INFO L226 Difference]: Without dead ends: 8590 [2021-10-07 15:45:34,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1031.1ms TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:45:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2021-10-07 15:45:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 5866. [2021-10-07 15:45:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5866 states, 5865 states have (on average 4.619266837169651) internal successors, (27092), 5865 states have internal predecessors, (27092), 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) [2021-10-07 15:45:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 27092 transitions. [2021-10-07 15:45:34,392 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 27092 transitions. Word has length 23 [2021-10-07 15:45:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:34,392 INFO L470 AbstractCegarLoop]: Abstraction has 5866 states and 27092 transitions. [2021-10-07 15:45:34,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-10-07 15:45:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 27092 transitions. [2021-10-07 15:45:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:34,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:34,407 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:34,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:34,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:34,608 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:34,609 INFO L82 PathProgramCache]: Analyzing trace with hash -125007639, now seen corresponding path program 36 times [2021-10-07 15:45:34,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:34,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455380271] [2021-10-07 15:45:34,610 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:45:34,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:34,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:34,612 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:34,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-07 15:45:35,137 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:45:35,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:35,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:35,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:35,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:35,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:35,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455380271] [2021-10-07 15:45:35,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455380271] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:35,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:35,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:45:35,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457002182] [2021-10-07 15:45:35,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:35,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:35,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:35,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:35,411 INFO L87 Difference]: Start difference. First operand 5866 states and 27092 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:45:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:36,361 INFO L93 Difference]: Finished difference Result 7210 states and 31254 transitions. [2021-10-07 15:45:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:45:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:36,447 INFO L225 Difference]: With dead ends: 7210 [2021-10-07 15:45:36,448 INFO L226 Difference]: Without dead ends: 7186 [2021-10-07 15:45:36,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 416.2ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:45:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2021-10-07 15:45:36,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 5840. [2021-10-07 15:45:36,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5839 states have (on average 4.61260489809899) internal successors, (26933), 5839 states have internal predecessors, (26933), 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) [2021-10-07 15:45:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 26933 transitions. [2021-10-07 15:45:36,633 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 26933 transitions. Word has length 23 [2021-10-07 15:45:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:36,633 INFO L470 AbstractCegarLoop]: Abstraction has 5840 states and 26933 transitions. [2021-10-07 15:45:36,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:45:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 26933 transitions. [2021-10-07 15:45:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:36,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:36,650 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:36,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-10-07 15:45:36,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:36,858 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:36,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1936075451, now seen corresponding path program 37 times [2021-10-07 15:45:36,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:36,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435206275] [2021-10-07 15:45:36,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:45:36,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:36,861 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:36,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-07 15:45:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:37,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:37,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:37,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:37,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:37,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435206275] [2021-10-07 15:45:37,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435206275] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:37,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:37,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:45:37,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445943072] [2021-10-07 15:45:37,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:45:37,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:45:37,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:45:37,784 INFO L87 Difference]: Start difference. First operand 5840 states and 26933 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2021-10-07 15:45:39,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:39,400 INFO L93 Difference]: Finished difference Result 8084 states and 33966 transitions. [2021-10-07 15:45:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:45:39,402 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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 23 [2021-10-07 15:45:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:39,431 INFO L225 Difference]: With dead ends: 8084 [2021-10-07 15:45:39,431 INFO L226 Difference]: Without dead ends: 8030 [2021-10-07 15:45:39,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 856.6ms TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:45:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8030 states. [2021-10-07 15:45:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8030 to 5766. [2021-10-07 15:45:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 5765 states have (on average 4.613529921942758) internal successors, (26597), 5765 states have internal predecessors, (26597), 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) [2021-10-07 15:45:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 26597 transitions. [2021-10-07 15:45:39,652 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 26597 transitions. Word has length 23 [2021-10-07 15:45:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:39,652 INFO L470 AbstractCegarLoop]: Abstraction has 5766 states and 26597 transitions. [2021-10-07 15:45:39,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2021-10-07 15:45:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 26597 transitions. [2021-10-07 15:45:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:39,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:39,667 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:39,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-07 15:45:39,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:39,869 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:39,870 INFO L82 PathProgramCache]: Analyzing trace with hash 410659707, now seen corresponding path program 38 times [2021-10-07 15:45:39,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:39,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981392077] [2021-10-07 15:45:39,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:45:39,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:39,872 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:39,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-07 15:45:40,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:45:40,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:40,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:40,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:40,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:40,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:40,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981392077] [2021-10-07 15:45:40,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981392077] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:40,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:45:40,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542823992] [2021-10-07 15:45:40,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:45:40,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:45:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:45:40,956 INFO L87 Difference]: Start difference. First operand 5766 states and 26597 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-10-07 15:45:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:43,893 INFO L93 Difference]: Finished difference Result 10662 states and 46303 transitions. [2021-10-07 15:45:43,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:45:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 23 [2021-10-07 15:45:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:43,934 INFO L225 Difference]: With dead ends: 10662 [2021-10-07 15:45:43,934 INFO L226 Difference]: Without dead ends: 10572 [2021-10-07 15:45:43,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1874.8ms TimeCoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:45:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10572 states. [2021-10-07 15:45:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10572 to 7282. [2021-10-07 15:45:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7282 states, 7281 states have (on average 4.737536052740008) internal successors, (34494), 7281 states have internal predecessors, (34494), 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) [2021-10-07 15:45:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7282 states to 7282 states and 34494 transitions. [2021-10-07 15:45:44,240 INFO L78 Accepts]: Start accepts. Automaton has 7282 states and 34494 transitions. Word has length 23 [2021-10-07 15:45:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:44,240 INFO L470 AbstractCegarLoop]: Abstraction has 7282 states and 34494 transitions. [2021-10-07 15:45:44,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-10-07 15:45:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7282 states and 34494 transitions. [2021-10-07 15:45:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:44,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:44,259 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:44,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:44,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:44,461 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:44,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1226683333, now seen corresponding path program 39 times [2021-10-07 15:45:44,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:44,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238046159] [2021-10-07 15:45:44,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:45:44,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:44,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:44,464 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:44,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-07 15:45:45,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:45:45,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:45,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:45,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:45,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:45,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:45,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238046159] [2021-10-07 15:45:45,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238046159] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:45,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:45,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:45:45,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232430062] [2021-10-07 15:45:45,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:45,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:45,530 INFO L87 Difference]: Start difference. First operand 7282 states and 34494 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:45:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:46,849 INFO L93 Difference]: Finished difference Result 8084 states and 37600 transitions. [2021-10-07 15:45:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:45:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 23 [2021-10-07 15:45:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:46,882 INFO L225 Difference]: With dead ends: 8084 [2021-10-07 15:45:46,883 INFO L226 Difference]: Without dead ends: 8062 [2021-10-07 15:45:46,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 779.3ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:45:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8062 states. [2021-10-07 15:45:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8062 to 7364. [2021-10-07 15:45:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7364 states, 7363 states have (on average 4.738421838924351) internal successors, (34889), 7363 states have internal predecessors, (34889), 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) [2021-10-07 15:45:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7364 states to 7364 states and 34889 transitions. [2021-10-07 15:45:47,171 INFO L78 Accepts]: Start accepts. Automaton has 7364 states and 34889 transitions. Word has length 23 [2021-10-07 15:45:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:47,172 INFO L470 AbstractCegarLoop]: Abstraction has 7364 states and 34889 transitions. [2021-10-07 15:45:47,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:45:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7364 states and 34889 transitions. [2021-10-07 15:45:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:47,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:47,197 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:47,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:47,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:47,412 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:47,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1237284208, now seen corresponding path program 40 times [2021-10-07 15:45:47,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:47,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869238626] [2021-10-07 15:45:47,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:45:47,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:47,415 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:47,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-07 15:45:47,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:45:47,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:47,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:47,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:48,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:48,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:48,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869238626] [2021-10-07 15:45:48,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869238626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:48,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:48,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-07 15:45:48,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138227927] [2021-10-07 15:45:48,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:45:48,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:45:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:45:48,221 INFO L87 Difference]: Start difference. First operand 7364 states and 34889 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-10-07 15:45:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:48,908 INFO L93 Difference]: Finished difference Result 8460 states and 39387 transitions. [2021-10-07 15:45:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:45:48,909 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 23 [2021-10-07 15:45:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:48,940 INFO L225 Difference]: With dead ends: 8460 [2021-10-07 15:45:48,940 INFO L226 Difference]: Without dead ends: 8368 [2021-10-07 15:45:48,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 319.8ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:45:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8368 states. [2021-10-07 15:45:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8368 to 7402. [2021-10-07 15:45:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7402 states, 7401 states have (on average 4.73976489663559) internal successors, (35079), 7401 states have internal predecessors, (35079), 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) [2021-10-07 15:45:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 35079 transitions. [2021-10-07 15:45:49,310 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 35079 transitions. Word has length 23 [2021-10-07 15:45:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:49,311 INFO L470 AbstractCegarLoop]: Abstraction has 7402 states and 35079 transitions. [2021-10-07 15:45:49,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-10-07 15:45:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 35079 transitions. [2021-10-07 15:45:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:49,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:49,341 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:49,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:49,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:49,554 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash 593826, now seen corresponding path program 41 times [2021-10-07 15:45:49,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:49,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768277071] [2021-10-07 15:45:49,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:45:49,555 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:49,557 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:49,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-07 15:45:50,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:45:50,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:50,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:50,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:50,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:50,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:50,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768277071] [2021-10-07 15:45:50,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768277071] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:50,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:50,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 15:45:50,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818282061] [2021-10-07 15:45:50,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:45:50,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:45:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:45:50,353 INFO L87 Difference]: Start difference. First operand 7402 states and 35079 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2021-10-07 15:45:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:51,339 INFO L93 Difference]: Finished difference Result 9430 states and 42422 transitions. [2021-10-07 15:45:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:45:51,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 23 [2021-10-07 15:45:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:51,379 INFO L225 Difference]: With dead ends: 9430 [2021-10-07 15:45:51,380 INFO L226 Difference]: Without dead ends: 9424 [2021-10-07 15:45:51,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 519.4ms TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:45:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9424 states. [2021-10-07 15:45:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9424 to 7606. [2021-10-07 15:45:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 7605 states have (on average 4.7535831689677845) internal successors, (36151), 7605 states have internal predecessors, (36151), 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) [2021-10-07 15:45:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 36151 transitions. [2021-10-07 15:45:51,807 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 36151 transitions. Word has length 23 [2021-10-07 15:45:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:51,807 INFO L470 AbstractCegarLoop]: Abstraction has 7606 states and 36151 transitions. [2021-10-07 15:45:51,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2021-10-07 15:45:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 36151 transitions. [2021-10-07 15:45:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:51,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:51,832 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:51,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-07 15:45:52,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:52,034 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash -421891900, now seen corresponding path program 42 times [2021-10-07 15:45:52,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:52,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423365706] [2021-10-07 15:45:52,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:45:52,036 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:52,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:52,037 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:52,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-07 15:45:52,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:45:52,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:52,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:52,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:52,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:53,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:53,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423365706] [2021-10-07 15:45:53,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423365706] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:53,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:53,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-07 15:45:53,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933603442] [2021-10-07 15:45:53,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:45:53,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:45:53,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:45:53,004 INFO L87 Difference]: Start difference. First operand 7606 states and 36151 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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) [2021-10-07 15:45:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:54,186 INFO L93 Difference]: Finished difference Result 12432 states and 56531 transitions. [2021-10-07 15:45:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:45:54,187 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 23 [2021-10-07 15:45:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:54,236 INFO L225 Difference]: With dead ends: 12432 [2021-10-07 15:45:54,237 INFO L226 Difference]: Without dead ends: 12356 [2021-10-07 15:45:54,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 606.6ms TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:45:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12356 states. [2021-10-07 15:45:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12356 to 7754. [2021-10-07 15:45:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7754 states, 7753 states have (on average 4.739455694569844) internal successors, (36745), 7753 states have internal predecessors, (36745), 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) [2021-10-07 15:45:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7754 states to 7754 states and 36745 transitions. [2021-10-07 15:45:54,517 INFO L78 Accepts]: Start accepts. Automaton has 7754 states and 36745 transitions. Word has length 23 [2021-10-07 15:45:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:54,517 INFO L470 AbstractCegarLoop]: Abstraction has 7754 states and 36745 transitions. [2021-10-07 15:45:54,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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) [2021-10-07 15:45:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7754 states and 36745 transitions. [2021-10-07 15:45:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:54,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:54,540 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:54,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-07 15:45:54,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:54,741 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:54,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:54,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1265308865, now seen corresponding path program 43 times [2021-10-07 15:45:54,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:54,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829926951] [2021-10-07 15:45:54,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:45:54,743 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:54,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:54,744 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:54,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-07 15:45:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:55,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:45:55,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:55,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:55,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:55,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829926951] [2021-10-07 15:45:55,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829926951] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:55,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:55,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:45:55,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107321274] [2021-10-07 15:45:55,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:55,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:55,567 INFO L87 Difference]: Start difference. First operand 7754 states and 36745 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-10-07 15:45:56,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:56,931 INFO L93 Difference]: Finished difference Result 8432 states and 39255 transitions. [2021-10-07 15:45:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:45:56,932 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 23 [2021-10-07 15:45:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:56,964 INFO L225 Difference]: With dead ends: 8432 [2021-10-07 15:45:56,965 INFO L226 Difference]: Without dead ends: 8374 [2021-10-07 15:45:56,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 591.8ms TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:45:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8374 states. [2021-10-07 15:45:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8374 to 7820. [2021-10-07 15:45:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7820 states, 7819 states have (on average 4.729505051796905) internal successors, (36980), 7819 states have internal predecessors, (36980), 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) [2021-10-07 15:45:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 36980 transitions. [2021-10-07 15:45:57,183 INFO L78 Accepts]: Start accepts. Automaton has 7820 states and 36980 transitions. Word has length 23 [2021-10-07 15:45:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:57,183 INFO L470 AbstractCegarLoop]: Abstraction has 7820 states and 36980 transitions. [2021-10-07 15:45:57,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-10-07 15:45:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7820 states and 36980 transitions. [2021-10-07 15:45:57,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:45:57,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:57,206 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:57,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:57,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:57,407 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:57,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1298183364, now seen corresponding path program 44 times [2021-10-07 15:45:57,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:57,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185862174] [2021-10-07 15:45:57,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:45:57,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:57,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:57,410 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:57,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-07 15:45:58,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:45:58,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:58,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:45:58,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:58,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:45:58,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:58,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185862174] [2021-10-07 15:45:58,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185862174] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:58,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:58,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:45:58,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564152011] [2021-10-07 15:45:58,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:45:58,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:45:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:45:58,500 INFO L87 Difference]: Start difference. First operand 7820 states and 36980 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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) [2021-10-07 15:46:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:00,431 INFO L93 Difference]: Finished difference Result 12854 states and 57158 transitions. [2021-10-07 15:46:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:46:00,432 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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 23 [2021-10-07 15:46:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:00,479 INFO L225 Difference]: With dead ends: 12854 [2021-10-07 15:46:00,479 INFO L226 Difference]: Without dead ends: 12786 [2021-10-07 15:46:00,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1199.4ms TimeCoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:46:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12786 states. [2021-10-07 15:46:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12786 to 8530. [2021-10-07 15:46:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8530 states, 8529 states have (on average 4.6966819087818035) internal successors, (40058), 8529 states have internal predecessors, (40058), 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) [2021-10-07 15:46:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8530 states to 8530 states and 40058 transitions. [2021-10-07 15:46:00,793 INFO L78 Accepts]: Start accepts. Automaton has 8530 states and 40058 transitions. Word has length 23 [2021-10-07 15:46:00,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:00,794 INFO L470 AbstractCegarLoop]: Abstraction has 8530 states and 40058 transitions. [2021-10-07 15:46:00,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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) [2021-10-07 15:46:00,794 INFO L276 IsEmpty]: Start isEmpty. Operand 8530 states and 40058 transitions. [2021-10-07 15:46:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:00,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:00,815 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:00,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:01,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:01,017 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:01,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1582633149, now seen corresponding path program 45 times [2021-10-07 15:46:01,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:01,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635491453] [2021-10-07 15:46:01,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:46:01,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:01,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:01,021 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:01,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-07 15:46:01,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:46:01,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:01,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:46:01,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:01,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:02,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:02,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635491453] [2021-10-07 15:46:02,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635491453] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:02,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:02,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:46:02,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722918596] [2021-10-07 15:46:02,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:46:02,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:02,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:46:02,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:02,065 INFO L87 Difference]: Start difference. First operand 8530 states and 40058 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:46:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:02,632 INFO L93 Difference]: Finished difference Result 10760 states and 47853 transitions. [2021-10-07 15:46:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:46:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 23 [2021-10-07 15:46:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:02,676 INFO L225 Difference]: With dead ends: 10760 [2021-10-07 15:46:02,676 INFO L226 Difference]: Without dead ends: 10744 [2021-10-07 15:46:02,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 212.6ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:46:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2021-10-07 15:46:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 8600. [2021-10-07 15:46:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8600 states, 8599 states have (on average 4.706012327014769) internal successors, (40467), 8599 states have internal predecessors, (40467), 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) [2021-10-07 15:46:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8600 states to 8600 states and 40467 transitions. [2021-10-07 15:46:02,995 INFO L78 Accepts]: Start accepts. Automaton has 8600 states and 40467 transitions. Word has length 23 [2021-10-07 15:46:02,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:02,996 INFO L470 AbstractCegarLoop]: Abstraction has 8600 states and 40467 transitions. [2021-10-07 15:46:02,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:46:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 8600 states and 40467 transitions. [2021-10-07 15:46:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:03,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:03,018 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:03,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:03,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:03,219 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash 915382788, now seen corresponding path program 46 times [2021-10-07 15:46:03,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:03,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555810284] [2021-10-07 15:46:03,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:46:03,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:03,223 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:03,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-07 15:46:03,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:46:03,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:03,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:46:03,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:03,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:04,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:04,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555810284] [2021-10-07 15:46:04,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555810284] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:04,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:04,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-07 15:46:04,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995723435] [2021-10-07 15:46:04,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:46:04,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:46:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:46:04,046 INFO L87 Difference]: Start difference. First operand 8600 states and 40467 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-10-07 15:46:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:04,679 INFO L93 Difference]: Finished difference Result 10144 states and 46003 transitions. [2021-10-07 15:46:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:46:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 23 [2021-10-07 15:46:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:04,714 INFO L225 Difference]: With dead ends: 10144 [2021-10-07 15:46:04,714 INFO L226 Difference]: Without dead ends: 10144 [2021-10-07 15:46:04,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 291.0ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:46:04,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10144 states. [2021-10-07 15:46:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10144 to 8574. [2021-10-07 15:46:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8574 states, 8573 states have (on average 4.703137758077686) internal successors, (40320), 8573 states have internal predecessors, (40320), 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) [2021-10-07 15:46:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8574 states to 8574 states and 40320 transitions. [2021-10-07 15:46:05,063 INFO L78 Accepts]: Start accepts. Automaton has 8574 states and 40320 transitions. Word has length 23 [2021-10-07 15:46:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:05,064 INFO L470 AbstractCegarLoop]: Abstraction has 8574 states and 40320 transitions. [2021-10-07 15:46:05,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-10-07 15:46:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8574 states and 40320 transitions. [2021-10-07 15:46:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:05,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:05,089 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:05,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-07 15:46:05,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:05,290 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:05,291 INFO L82 PathProgramCache]: Analyzing trace with hash -728772270, now seen corresponding path program 47 times [2021-10-07 15:46:05,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:05,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322924270] [2021-10-07 15:46:05,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:46:05,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:05,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:05,294 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:05,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-07 15:46:05,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:05,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:05,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:46:05,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:05,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:06,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:06,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322924270] [2021-10-07 15:46:06,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322924270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:06,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:06,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 15:46:06,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472158826] [2021-10-07 15:46:06,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:46:06,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:46:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:46:06,150 INFO L87 Difference]: Start difference. First operand 8574 states and 40320 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-10-07 15:46:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:06,965 INFO L93 Difference]: Finished difference Result 9352 states and 43474 transitions. [2021-10-07 15:46:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:46:06,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 23 [2021-10-07 15:46:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:07,001 INFO L225 Difference]: With dead ends: 9352 [2021-10-07 15:46:07,001 INFO L226 Difference]: Without dead ends: 9352 [2021-10-07 15:46:07,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 414.3ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:46:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2021-10-07 15:46:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 8506. [2021-10-07 15:46:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8506 states, 8505 states have (on average 4.708877131099353) internal successors, (40049), 8505 states have internal predecessors, (40049), 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) [2021-10-07 15:46:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8506 states to 8506 states and 40049 transitions. [2021-10-07 15:46:07,238 INFO L78 Accepts]: Start accepts. Automaton has 8506 states and 40049 transitions. Word has length 23 [2021-10-07 15:46:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:07,239 INFO L470 AbstractCegarLoop]: Abstraction has 8506 states and 40049 transitions. [2021-10-07 15:46:07,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-10-07 15:46:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8506 states and 40049 transitions. [2021-10-07 15:46:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:07,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:07,264 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:07,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:07,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:07,466 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash -116089613, now seen corresponding path program 48 times [2021-10-07 15:46:07,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:07,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149410592] [2021-10-07 15:46:07,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:46:07,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:07,468 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:07,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-07 15:46:08,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:46:08,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:08,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:46:08,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:08,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:08,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:08,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149410592] [2021-10-07 15:46:08,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149410592] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:08,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:08,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:46:08,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368223502] [2021-10-07 15:46:08,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:46:08,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:46:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:46:08,654 INFO L87 Difference]: Start difference. First operand 8506 states and 40049 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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) [2021-10-07 15:46:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:10,712 INFO L93 Difference]: Finished difference Result 14386 states and 62532 transitions. [2021-10-07 15:46:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:46:10,713 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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 23 [2021-10-07 15:46:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:10,765 INFO L225 Difference]: With dead ends: 14386 [2021-10-07 15:46:10,766 INFO L226 Difference]: Without dead ends: 14312 [2021-10-07 15:46:10,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1178.9ms TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:46:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14312 states. [2021-10-07 15:46:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14312 to 9568. [2021-10-07 15:46:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9568 states, 9567 states have (on average 4.726978154071286) internal successors, (45223), 9567 states have internal predecessors, (45223), 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) [2021-10-07 15:46:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 45223 transitions. [2021-10-07 15:46:11,136 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 45223 transitions. Word has length 23 [2021-10-07 15:46:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:11,136 INFO L470 AbstractCegarLoop]: Abstraction has 9568 states and 45223 transitions. [2021-10-07 15:46:11,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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) [2021-10-07 15:46:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 45223 transitions. [2021-10-07 15:46:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:11,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:11,168 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:11,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-10-07 15:46:11,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:11,369 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:11,370 INFO L82 PathProgramCache]: Analyzing trace with hash 990574123, now seen corresponding path program 49 times [2021-10-07 15:46:11,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:11,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029560011] [2021-10-07 15:46:11,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:46:11,371 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:11,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:11,372 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:11,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-07 15:46:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:46:11,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:46:11,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:12,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:12,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:12,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029560011] [2021-10-07 15:46:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029560011] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:12,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:12,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-07 15:46:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114667304] [2021-10-07 15:46:12,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:46:12,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:46:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:46:12,291 INFO L87 Difference]: Start difference. First operand 9568 states and 45223 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-10-07 15:46:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:13,037 INFO L93 Difference]: Finished difference Result 11488 states and 52654 transitions. [2021-10-07 15:46:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:46:13,037 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 23 [2021-10-07 15:46:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:13,080 INFO L225 Difference]: With dead ends: 11488 [2021-10-07 15:46:13,081 INFO L226 Difference]: Without dead ends: 11260 [2021-10-07 15:46:13,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 325.4ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:46:13,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2021-10-07 15:46:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 10142. [2021-10-07 15:46:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10142 states, 10141 states have (on average 4.7113696874075535) internal successors, (47778), 10141 states have internal predecessors, (47778), 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) [2021-10-07 15:46:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10142 states to 10142 states and 47778 transitions. [2021-10-07 15:46:13,336 INFO L78 Accepts]: Start accepts. Automaton has 10142 states and 47778 transitions. Word has length 23 [2021-10-07 15:46:13,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:13,336 INFO L470 AbstractCegarLoop]: Abstraction has 10142 states and 47778 transitions. [2021-10-07 15:46:13,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-10-07 15:46:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 10142 states and 47778 transitions. [2021-10-07 15:46:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:13,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:13,360 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:13,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-07 15:46:13,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:13,561 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:13,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:13,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1145705755, now seen corresponding path program 50 times [2021-10-07 15:46:13,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:13,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190082080] [2021-10-07 15:46:13,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:46:13,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:13,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:13,564 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:13,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-07 15:46:14,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:14,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:14,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:46:14,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:14,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:14,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:14,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190082080] [2021-10-07 15:46:14,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190082080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:14,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:14,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:46:14,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620684369] [2021-10-07 15:46:14,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:46:14,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:46:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:14,603 INFO L87 Difference]: Start difference. First operand 10142 states and 47778 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:46:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:15,919 INFO L93 Difference]: Finished difference Result 12568 states and 56897 transitions. [2021-10-07 15:46:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:46:15,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 23 [2021-10-07 15:46:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:15,960 INFO L225 Difference]: With dead ends: 12568 [2021-10-07 15:46:15,960 INFO L226 Difference]: Without dead ends: 12516 [2021-10-07 15:46:15,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 783.5ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:46:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12516 states. [2021-10-07 15:46:16,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12516 to 10424. [2021-10-07 15:46:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10424 states, 10423 states have (on average 4.718603089321692) internal successors, (49182), 10423 states have internal predecessors, (49182), 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) [2021-10-07 15:46:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10424 states to 10424 states and 49182 transitions. [2021-10-07 15:46:16,430 INFO L78 Accepts]: Start accepts. Automaton has 10424 states and 49182 transitions. Word has length 23 [2021-10-07 15:46:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:16,430 INFO L470 AbstractCegarLoop]: Abstraction has 10424 states and 49182 transitions. [2021-10-07 15:46:16,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-07 15:46:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10424 states and 49182 transitions. [2021-10-07 15:46:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:16,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:16,467 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:16,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-10-07 15:46:16,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:16,668 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:16,669 INFO L82 PathProgramCache]: Analyzing trace with hash -129135875, now seen corresponding path program 51 times [2021-10-07 15:46:16,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:16,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625985848] [2021-10-07 15:46:16,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:46:16,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:16,672 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:16,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-07 15:46:17,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:46:17,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:17,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:46:17,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:46:17,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:46:17,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:17,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625985848] [2021-10-07 15:46:17,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625985848] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:17,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:17,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:46:17,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023677576] [2021-10-07 15:46:17,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:46:17,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:17,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:46:17,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:17,904 INFO L87 Difference]: Start difference. First operand 10424 states and 49182 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2021-10-07 15:46:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:19,884 INFO L93 Difference]: Finished difference Result 16960 states and 77719 transitions. [2021-10-07 15:46:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:46:19,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 23 [2021-10-07 15:46:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:19,960 INFO L225 Difference]: With dead ends: 16960 [2021-10-07 15:46:19,960 INFO L226 Difference]: Without dead ends: 16890 [2021-10-07 15:46:19,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1383.5ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:46:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16890 states. [2021-10-07 15:46:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16890 to 12202. [2021-10-07 15:46:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12202 states, 12201 states have (on average 4.809523809523809) internal successors, (58681), 12201 states have internal predecessors, (58681), 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) [2021-10-07 15:46:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12202 states to 12202 states and 58681 transitions. [2021-10-07 15:46:20,391 INFO L78 Accepts]: Start accepts. Automaton has 12202 states and 58681 transitions. Word has length 23 [2021-10-07 15:46:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:20,392 INFO L470 AbstractCegarLoop]: Abstraction has 12202 states and 58681 transitions. [2021-10-07 15:46:20,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2021-10-07 15:46:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 12202 states and 58681 transitions. [2021-10-07 15:46:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:20,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:20,425 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:20,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:20,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:20,633 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:20,633 INFO L82 PathProgramCache]: Analyzing trace with hash -762266297, now seen corresponding path program 52 times [2021-10-07 15:46:20,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:20,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762573726] [2021-10-07 15:46:20,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:46:20,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:20,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:20,636 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:20,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-07 15:46:21,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:46:21,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:21,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:46:21,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:46:21,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:46:21,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:21,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762573726] [2021-10-07 15:46:21,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762573726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:21,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:21,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-07 15:46:21,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998699599] [2021-10-07 15:46:21,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:46:21,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:46:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:46:21,551 INFO L87 Difference]: Start difference. First operand 12202 states and 58681 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-10-07 15:46:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:22,207 INFO L93 Difference]: Finished difference Result 14162 states and 65758 transitions. [2021-10-07 15:46:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:46:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 23 [2021-10-07 15:46:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:22,269 INFO L225 Difference]: With dead ends: 14162 [2021-10-07 15:46:22,269 INFO L226 Difference]: Without dead ends: 14132 [2021-10-07 15:46:22,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 290.4ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:46:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14132 states. [2021-10-07 15:46:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14132 to 12148. [2021-10-07 15:46:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12148 states, 12147 states have (on average 4.807771466205647) internal successors, (58400), 12147 states have internal predecessors, (58400), 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) [2021-10-07 15:46:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12148 states to 12148 states and 58400 transitions. [2021-10-07 15:46:22,666 INFO L78 Accepts]: Start accepts. Automaton has 12148 states and 58400 transitions. Word has length 23 [2021-10-07 15:46:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:22,666 INFO L470 AbstractCegarLoop]: Abstraction has 12148 states and 58400 transitions. [2021-10-07 15:46:22,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-10-07 15:46:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 12148 states and 58400 transitions. [2021-10-07 15:46:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:46:22,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:22,703 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:22,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:22,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:22,905 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:22,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:22,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1118293007, now seen corresponding path program 53 times [2021-10-07 15:46:22,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:22,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462390772] [2021-10-07 15:46:22,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:46:22,907 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:22,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:22,908 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:22,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-07 15:46:23,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:23,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:23,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:46:23,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:46:23,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:23,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:23,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462390772] [2021-10-07 15:46:23,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462390772] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:23,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:23,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-07 15:46:23,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166011753] [2021-10-07 15:46:23,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:46:23,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:46:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:46:23,846 INFO L87 Difference]: Start difference. First operand 12148 states and 58400 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-10-07 15:46:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:24,780 INFO L93 Difference]: Finished difference Result 12994 states and 61421 transitions. [2021-10-07 15:46:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:46:24,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 23 [2021-10-07 15:46:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:24,835 INFO L225 Difference]: With dead ends: 12994 [2021-10-07 15:46:24,835 INFO L226 Difference]: Without dead ends: 12972 [2021-10-07 15:46:24,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 399.0ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:46:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12972 states. [2021-10-07 15:46:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12972 to 12032. [2021-10-07 15:46:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12032 states, 12031 states have (on average 4.807996010306708) internal successors, (57845), 12031 states have internal predecessors, (57845), 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) [2021-10-07 15:46:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12032 states to 12032 states and 57845 transitions. [2021-10-07 15:46:25,320 INFO L78 Accepts]: Start accepts. Automaton has 12032 states and 57845 transitions. Word has length 23 [2021-10-07 15:46:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:25,320 INFO L470 AbstractCegarLoop]: Abstraction has 12032 states and 57845 transitions. [2021-10-07 15:46:25,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-10-07 15:46:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 12032 states and 57845 transitions. [2021-10-07 15:46:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:46:25,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:25,354 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:25,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2021-10-07 15:46:25,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:25,555 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1330585818, now seen corresponding path program 54 times [2021-10-07 15:46:25,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:25,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359520184] [2021-10-07 15:46:25,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:46:25,557 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:25,558 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:25,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-07 15:46:26,264 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:46:26,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:26,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:46:26,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:26,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:27,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:27,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359520184] [2021-10-07 15:46:27,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359520184] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:27,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:27,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-10-07 15:46:27,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327680387] [2021-10-07 15:46:27,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:46:27,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:46:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:46:27,096 INFO L87 Difference]: Start difference. First operand 12032 states and 57845 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-10-07 15:46:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:32,210 INFO L93 Difference]: Finished difference Result 16902 states and 75921 transitions. [2021-10-07 15:46:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:46:32,211 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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 24 [2021-10-07 15:46:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:32,276 INFO L225 Difference]: With dead ends: 16902 [2021-10-07 15:46:32,276 INFO L226 Difference]: Without dead ends: 16890 [2021-10-07 15:46:32,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 3248.4ms TimeCoverageRelationStatistics Valid=413, Invalid=1567, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:46:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16890 states. [2021-10-07 15:46:32,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16890 to 12650. [2021-10-07 15:46:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12650 states, 12649 states have (on average 4.823859593643767) internal successors, (61017), 12649 states have internal predecessors, (61017), 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) [2021-10-07 15:46:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12650 states to 12650 states and 61017 transitions. [2021-10-07 15:46:32,946 INFO L78 Accepts]: Start accepts. Automaton has 12650 states and 61017 transitions. Word has length 24 [2021-10-07 15:46:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:32,946 INFO L470 AbstractCegarLoop]: Abstraction has 12650 states and 61017 transitions. [2021-10-07 15:46:32,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-10-07 15:46:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12650 states and 61017 transitions. [2021-10-07 15:46:32,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:46:32,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:32,986 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:32,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:33,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:33,193 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:33,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1758044814, now seen corresponding path program 55 times [2021-10-07 15:46:33,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:33,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289195444] [2021-10-07 15:46:33,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:46:33,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:33,196 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:33,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-07 15:46:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:46:33,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:46:33,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:34,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:34,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:34,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289195444] [2021-10-07 15:46:34,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289195444] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:34,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:34,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:46:34,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529430110] [2021-10-07 15:46:34,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:46:34,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:46:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:34,330 INFO L87 Difference]: Start difference. First operand 12650 states and 61017 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:46:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:35,982 INFO L93 Difference]: Finished difference Result 17008 states and 77929 transitions. [2021-10-07 15:46:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:46:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 24 [2021-10-07 15:46:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:36,055 INFO L225 Difference]: With dead ends: 17008 [2021-10-07 15:46:36,055 INFO L226 Difference]: Without dead ends: 16988 [2021-10-07 15:46:36,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 885.3ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:46:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16988 states. [2021-10-07 15:46:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16988 to 13738. [2021-10-07 15:46:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13738 states, 13737 states have (on average 4.805925602387712) internal successors, (66019), 13737 states have internal predecessors, (66019), 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) [2021-10-07 15:46:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13738 states to 13738 states and 66019 transitions. [2021-10-07 15:46:36,794 INFO L78 Accepts]: Start accepts. Automaton has 13738 states and 66019 transitions. Word has length 24 [2021-10-07 15:46:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:36,794 INFO L470 AbstractCegarLoop]: Abstraction has 13738 states and 66019 transitions. [2021-10-07 15:46:36,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:46:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13738 states and 66019 transitions. [2021-10-07 15:46:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:46:36,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:36,845 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:36,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:37,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:37,046 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:37,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:37,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2116922894, now seen corresponding path program 56 times [2021-10-07 15:46:37,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:37,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726863413] [2021-10-07 15:46:37,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:46:37,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:37,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:37,050 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:37,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-07 15:46:37,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:37,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:37,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:37,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:37,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:38,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:38,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726863413] [2021-10-07 15:46:38,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726863413] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:38,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:38,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:46:38,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458560079] [2021-10-07 15:46:38,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:46:38,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:46:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:46:38,149 INFO L87 Difference]: Start difference. First operand 13738 states and 66019 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-10-07 15:46:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:39,077 INFO L93 Difference]: Finished difference Result 19292 states and 89381 transitions. [2021-10-07 15:46:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:46:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 24 [2021-10-07 15:46:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:39,157 INFO L225 Difference]: With dead ends: 19292 [2021-10-07 15:46:39,157 INFO L226 Difference]: Without dead ends: 19276 [2021-10-07 15:46:39,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 438.0ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:46:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19276 states. [2021-10-07 15:46:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19276 to 15264. [2021-10-07 15:46:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15264 states, 15263 states have (on average 4.830505143156653) internal successors, (73728), 15263 states have internal predecessors, (73728), 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) [2021-10-07 15:46:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15264 states to 15264 states and 73728 transitions. [2021-10-07 15:46:40,036 INFO L78 Accepts]: Start accepts. Automaton has 15264 states and 73728 transitions. Word has length 24 [2021-10-07 15:46:40,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:40,036 INFO L470 AbstractCegarLoop]: Abstraction has 15264 states and 73728 transitions. [2021-10-07 15:46:40,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-10-07 15:46:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 15264 states and 73728 transitions. [2021-10-07 15:46:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:46:40,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:40,079 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:40,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:40,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:40,280 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:40,281 INFO L82 PathProgramCache]: Analyzing trace with hash 491568848, now seen corresponding path program 57 times [2021-10-07 15:46:40,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:40,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950926506] [2021-10-07 15:46:40,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:46:40,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:40,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:40,285 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:40,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-07 15:46:41,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:46:41,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:41,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:41,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:41,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:41,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:41,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950926506] [2021-10-07 15:46:41,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950926506] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:41,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:41,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:46:41,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231964314] [2021-10-07 15:46:41,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:46:41,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:41,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:46:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:41,358 INFO L87 Difference]: Start difference. First operand 15264 states and 73728 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:46:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:43,249 INFO L93 Difference]: Finished difference Result 18418 states and 85738 transitions. [2021-10-07 15:46:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:46:43,250 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 24 [2021-10-07 15:46:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:43,327 INFO L225 Difference]: With dead ends: 18418 [2021-10-07 15:46:43,327 INFO L226 Difference]: Without dead ends: 18380 [2021-10-07 15:46:43,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 747.1ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:46:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18380 states. [2021-10-07 15:46:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18380 to 15366. [2021-10-07 15:46:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15366 states, 15365 states have (on average 4.820566221932965) internal successors, (74068), 15365 states have internal predecessors, (74068), 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) [2021-10-07 15:46:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15366 states to 15366 states and 74068 transitions. [2021-10-07 15:46:43,970 INFO L78 Accepts]: Start accepts. Automaton has 15366 states and 74068 transitions. Word has length 24 [2021-10-07 15:46:43,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:43,970 INFO L470 AbstractCegarLoop]: Abstraction has 15366 states and 74068 transitions. [2021-10-07 15:46:43,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-10-07 15:46:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15366 states and 74068 transitions. [2021-10-07 15:46:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:46:44,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:44,018 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:44,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:44,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:44,219 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:44,220 INFO L82 PathProgramCache]: Analyzing trace with hash 837768927, now seen corresponding path program 58 times [2021-10-07 15:46:44,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:44,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506036248] [2021-10-07 15:46:44,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:46:44,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:44,223 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:44,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-07 15:46:45,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:46:45,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:45,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:46:45,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:45,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:45,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:45,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506036248] [2021-10-07 15:46:45,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506036248] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:45,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:45,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:46:45,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705714213] [2021-10-07 15:46:45,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:46:45,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:46:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:46:45,477 INFO L87 Difference]: Start difference. First operand 15366 states and 74068 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2021-10-07 15:46:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:48,962 INFO L93 Difference]: Finished difference Result 26318 states and 118535 transitions. [2021-10-07 15:46:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-07 15:46:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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 24 [2021-10-07 15:46:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:49,084 INFO L225 Difference]: With dead ends: 26318 [2021-10-07 15:46:49,084 INFO L226 Difference]: Without dead ends: 26166 [2021-10-07 15:46:49,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 2007.8ms TimeCoverageRelationStatistics Valid=705, Invalid=2157, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:46:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26166 states. [2021-10-07 15:46:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26166 to 16962. [2021-10-07 15:46:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16962 states, 16961 states have (on average 4.859972878957609) internal successors, (82430), 16961 states have internal predecessors, (82430), 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) [2021-10-07 15:46:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16962 states to 16962 states and 82430 transitions. [2021-10-07 15:46:49,981 INFO L78 Accepts]: Start accepts. Automaton has 16962 states and 82430 transitions. Word has length 24 [2021-10-07 15:46:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:49,981 INFO L470 AbstractCegarLoop]: Abstraction has 16962 states and 82430 transitions. [2021-10-07 15:46:49,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2021-10-07 15:46:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 16962 states and 82430 transitions. [2021-10-07 15:46:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:46:50,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:50,038 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:50,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:50,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:50,253 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:50,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1242945862, now seen corresponding path program 59 times [2021-10-07 15:46:50,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:50,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554337224] [2021-10-07 15:46:50,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:46:50,255 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:50,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:50,256 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:50,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-07 15:46:51,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:46:51,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:51,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:46:51,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:51,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:46:51,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:51,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554337224] [2021-10-07 15:46:51,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554337224] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:51,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:51,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:46:51,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622262112] [2021-10-07 15:46:51,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:46:51,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:46:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:51,685 INFO L87 Difference]: Start difference. First operand 16962 states and 82430 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2021-10-07 15:46:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:53,599 INFO L93 Difference]: Finished difference Result 21996 states and 102531 transitions. [2021-10-07 15:46:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:46:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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 24 [2021-10-07 15:46:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:53,703 INFO L225 Difference]: With dead ends: 21996 [2021-10-07 15:46:53,703 INFO L226 Difference]: Without dead ends: 21980 [2021-10-07 15:46:53,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1039.4ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:46:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2021-10-07 15:46:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 17570. [2021-10-07 15:46:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17570 states, 17569 states have (on average 4.885423188570778) internal successors, (85832), 17569 states have internal predecessors, (85832), 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) [2021-10-07 15:46:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17570 states to 17570 states and 85832 transitions. [2021-10-07 15:46:54,560 INFO L78 Accepts]: Start accepts. Automaton has 17570 states and 85832 transitions. Word has length 24 [2021-10-07 15:46:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:54,561 INFO L470 AbstractCegarLoop]: Abstraction has 17570 states and 85832 transitions. [2021-10-07 15:46:54,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2021-10-07 15:46:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 17570 states and 85832 transitions. [2021-10-07 15:46:54,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:46:54,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:54,801 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:46:54,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:55,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:55,002 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:55,003 INFO L82 PathProgramCache]: Analyzing trace with hash 819707010, now seen corresponding path program 60 times [2021-10-07 15:46:55,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:55,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043925178] [2021-10-07 15:46:55,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:46:55,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:55,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:55,006 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:55,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-07 15:46:55,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:46:55,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:55,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:46:55,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:56,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:56,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:56,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043925178] [2021-10-07 15:46:56,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043925178] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:56,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:56,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2021-10-07 15:46:56,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012224445] [2021-10-07 15:46:56,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:46:56,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:56,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:46:56,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:46:56,697 INFO L87 Difference]: Start difference. First operand 17570 states and 85832 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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) [2021-10-07 15:47:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:03,960 INFO L93 Difference]: Finished difference Result 24172 states and 111539 transitions. [2021-10-07 15:47:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-07 15:47:03,962 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 24 [2021-10-07 15:47:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:04,050 INFO L225 Difference]: With dead ends: 24172 [2021-10-07 15:47:04,051 INFO L226 Difference]: Without dead ends: 24154 [2021-10-07 15:47:04,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 4880.1ms TimeCoverageRelationStatistics Valid=837, Invalid=3453, Unknown=0, NotChecked=0, Total=4290 [2021-10-07 15:47:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24154 states. [2021-10-07 15:47:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24154 to 18706. [2021-10-07 15:47:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18706 states, 18705 states have (on average 4.898690189788827) internal successors, (91630), 18705 states have internal predecessors, (91630), 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) [2021-10-07 15:47:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18706 states to 18706 states and 91630 transitions. [2021-10-07 15:47:04,886 INFO L78 Accepts]: Start accepts. Automaton has 18706 states and 91630 transitions. Word has length 24 [2021-10-07 15:47:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:04,886 INFO L470 AbstractCegarLoop]: Abstraction has 18706 states and 91630 transitions. [2021-10-07 15:47:04,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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) [2021-10-07 15:47:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 18706 states and 91630 transitions. [2021-10-07 15:47:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:04,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:04,951 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:04,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:05,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:05,158 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:05,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1010400514, now seen corresponding path program 61 times [2021-10-07 15:47:05,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:05,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030819583] [2021-10-07 15:47:05,160 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:47:05,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:05,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:05,161 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:05,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-07 15:47:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:47:05,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:47:05,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:06,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:06,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:06,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030819583] [2021-10-07 15:47:06,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030819583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:06,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:06,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:47:06,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861467139] [2021-10-07 15:47:06,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:47:06,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:47:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:06,463 INFO L87 Difference]: Start difference. First operand 18706 states and 91630 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:47:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:07,793 INFO L93 Difference]: Finished difference Result 22714 states and 107698 transitions. [2021-10-07 15:47:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:47:07,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 24 [2021-10-07 15:47:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:08,037 INFO L225 Difference]: With dead ends: 22714 [2021-10-07 15:47:08,037 INFO L226 Difference]: Without dead ends: 22706 [2021-10-07 15:47:08,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 745.9ms TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:47:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22706 states. [2021-10-07 15:47:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22706 to 19356. [2021-10-07 15:47:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19356 states, 19355 states have (on average 4.917024024799793) internal successors, (95169), 19355 states have internal predecessors, (95169), 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) [2021-10-07 15:47:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19356 states to 19356 states and 95169 transitions. [2021-10-07 15:47:08,871 INFO L78 Accepts]: Start accepts. Automaton has 19356 states and 95169 transitions. Word has length 24 [2021-10-07 15:47:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:08,871 INFO L470 AbstractCegarLoop]: Abstraction has 19356 states and 95169 transitions. [2021-10-07 15:47:08,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:47:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 19356 states and 95169 transitions. [2021-10-07 15:47:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:08,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:08,933 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:08,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:09,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:09,134 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:09,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1899567648, now seen corresponding path program 62 times [2021-10-07 15:47:09,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:09,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078636882] [2021-10-07 15:47:09,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:47:09,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:09,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:09,138 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:09,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-07 15:47:09,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:47:09,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:09,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:09,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:10,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:10,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:10,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078636882] [2021-10-07 15:47:10,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078636882] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:10,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:10,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:47:10,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059035904] [2021-10-07 15:47:10,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:47:10,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:47:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:10,434 INFO L87 Difference]: Start difference. First operand 19356 states and 95169 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2021-10-07 15:47:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:12,159 INFO L93 Difference]: Finished difference Result 25538 states and 121837 transitions. [2021-10-07 15:47:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:47:12,162 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 24 [2021-10-07 15:47:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:12,298 INFO L225 Difference]: With dead ends: 25538 [2021-10-07 15:47:12,298 INFO L226 Difference]: Without dead ends: 25520 [2021-10-07 15:47:12,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 661.8ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:47:12,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25520 states. [2021-10-07 15:47:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25520 to 20708. [2021-10-07 15:47:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20708 states, 20707 states have (on average 4.956005215627566) internal successors, (102624), 20707 states have internal predecessors, (102624), 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) [2021-10-07 15:47:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20708 states to 20708 states and 102624 transitions. [2021-10-07 15:47:13,251 INFO L78 Accepts]: Start accepts. Automaton has 20708 states and 102624 transitions. Word has length 24 [2021-10-07 15:47:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:13,251 INFO L470 AbstractCegarLoop]: Abstraction has 20708 states and 102624 transitions. [2021-10-07 15:47:13,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2021-10-07 15:47:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 20708 states and 102624 transitions. [2021-10-07 15:47:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:13,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:13,310 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:13,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-07 15:47:13,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:13,511 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1197950446, now seen corresponding path program 63 times [2021-10-07 15:47:13,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:13,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628162337] [2021-10-07 15:47:13,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:47:13,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:13,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:13,515 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:13,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-07 15:47:14,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:47:14,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:14,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:47:14,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:47:14,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:14,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:14,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628162337] [2021-10-07 15:47:14,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628162337] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:14,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:14,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-07 15:47:14,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866699271] [2021-10-07 15:47:14,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:47:14,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:14,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:47:14,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:47:14,965 INFO L87 Difference]: Start difference. First operand 20708 states and 102624 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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) [2021-10-07 15:47:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:16,441 INFO L93 Difference]: Finished difference Result 27062 states and 127194 transitions. [2021-10-07 15:47:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:47:16,442 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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) Word has length 24 [2021-10-07 15:47:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:16,596 INFO L225 Difference]: With dead ends: 27062 [2021-10-07 15:47:16,596 INFO L226 Difference]: Without dead ends: 27028 [2021-10-07 15:47:16,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 574.9ms TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:47:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27028 states. [2021-10-07 15:47:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27028 to 21632. [2021-10-07 15:47:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21632 states, 21631 states have (on average 4.959086496232259) internal successors, (107270), 21631 states have internal predecessors, (107270), 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) [2021-10-07 15:47:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21632 states to 21632 states and 107270 transitions. [2021-10-07 15:47:17,649 INFO L78 Accepts]: Start accepts. Automaton has 21632 states and 107270 transitions. Word has length 24 [2021-10-07 15:47:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:17,649 INFO L470 AbstractCegarLoop]: Abstraction has 21632 states and 107270 transitions. [2021-10-07 15:47:17,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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) [2021-10-07 15:47:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 21632 states and 107270 transitions. [2021-10-07 15:47:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:17,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:17,712 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:17,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:17,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:17,913 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:17,917 INFO L82 PathProgramCache]: Analyzing trace with hash 192987008, now seen corresponding path program 64 times [2021-10-07 15:47:17,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:17,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273670885] [2021-10-07 15:47:17,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:47:17,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:17,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:17,919 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:17,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-07 15:47:18,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:47:18,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:18,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:47:18,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:18,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:19,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:19,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273670885] [2021-10-07 15:47:19,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273670885] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:19,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:19,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:47:19,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476831577] [2021-10-07 15:47:19,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:47:19,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:19,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:47:19,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:47:19,318 INFO L87 Difference]: Start difference. First operand 21632 states and 107270 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2021-10-07 15:47:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:21,197 INFO L93 Difference]: Finished difference Result 25106 states and 120462 transitions. [2021-10-07 15:47:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:47:21,198 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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 24 [2021-10-07 15:47:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:21,482 INFO L225 Difference]: With dead ends: 25106 [2021-10-07 15:47:21,482 INFO L226 Difference]: Without dead ends: 25102 [2021-10-07 15:47:21,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1103.7ms TimeCoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:47:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25102 states. [2021-10-07 15:47:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25102 to 22060. [2021-10-07 15:47:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22060 states, 22059 states have (on average 4.949091073938075) internal successors, (109172), 22059 states have internal predecessors, (109172), 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) [2021-10-07 15:47:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22060 states to 22060 states and 109172 transitions. [2021-10-07 15:47:22,331 INFO L78 Accepts]: Start accepts. Automaton has 22060 states and 109172 transitions. Word has length 24 [2021-10-07 15:47:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:22,331 INFO L470 AbstractCegarLoop]: Abstraction has 22060 states and 109172 transitions. [2021-10-07 15:47:22,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2021-10-07 15:47:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 22060 states and 109172 transitions. [2021-10-07 15:47:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:22,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:22,398 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:22,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:22,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:22,613 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash -756258398, now seen corresponding path program 65 times [2021-10-07 15:47:22,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:22,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51231162] [2021-10-07 15:47:22,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:47:22,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:22,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:22,617 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:22,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-07 15:47:23,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:47:23,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:23,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:47:23,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:23,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:24,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:24,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51231162] [2021-10-07 15:47:24,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51231162] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:24,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:24,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:47:24,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101942166] [2021-10-07 15:47:24,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:47:24,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:24,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:47:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:47:24,178 INFO L87 Difference]: Start difference. First operand 22060 states and 109172 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2021-10-07 15:47:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:26,900 INFO L93 Difference]: Finished difference Result 31168 states and 148437 transitions. [2021-10-07 15:47:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:47:26,902 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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 24 [2021-10-07 15:47:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:27,048 INFO L225 Difference]: With dead ends: 31168 [2021-10-07 15:47:27,048 INFO L226 Difference]: Without dead ends: 31154 [2021-10-07 15:47:27,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1634.9ms TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:47:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31154 states. [2021-10-07 15:47:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31154 to 24430. [2021-10-07 15:47:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24430 states, 24429 states have (on average 4.980555896680175) internal successors, (121670), 24429 states have internal predecessors, (121670), 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) [2021-10-07 15:47:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24430 states to 24430 states and 121670 transitions. [2021-10-07 15:47:28,146 INFO L78 Accepts]: Start accepts. Automaton has 24430 states and 121670 transitions. Word has length 24 [2021-10-07 15:47:28,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:28,147 INFO L470 AbstractCegarLoop]: Abstraction has 24430 states and 121670 transitions. [2021-10-07 15:47:28,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2021-10-07 15:47:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 24430 states and 121670 transitions. [2021-10-07 15:47:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:28,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:28,219 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:28,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-07 15:47:28,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:28,420 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash 132908736, now seen corresponding path program 66 times [2021-10-07 15:47:28,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:28,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155085804] [2021-10-07 15:47:28,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:47:28,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:28,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:28,424 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:28,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-07 15:47:29,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:47:29,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:29,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:47:29,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:29,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:30,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:30,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155085804] [2021-10-07 15:47:30,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155085804] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:30,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:30,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-07 15:47:30,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858485250] [2021-10-07 15:47:30,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:47:30,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:30,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:47:30,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:47:30,212 INFO L87 Difference]: Start difference. First operand 24430 states and 121670 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 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) [2021-10-07 15:47:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:35,871 INFO L93 Difference]: Finished difference Result 27112 states and 132924 transitions. [2021-10-07 15:47:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-07 15:47:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 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) Word has length 24 [2021-10-07 15:47:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:35,999 INFO L225 Difference]: With dead ends: 27112 [2021-10-07 15:47:35,999 INFO L226 Difference]: Without dead ends: 27104 [2021-10-07 15:47:36,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 3134.0ms TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2021-10-07 15:47:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2021-10-07 15:47:36,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 24546. [2021-10-07 15:47:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24546 states, 24545 states have (on average 4.9816255856589935) internal successors, (122274), 24545 states have internal predecessors, (122274), 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) [2021-10-07 15:47:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24546 states to 24546 states and 122274 transitions. [2021-10-07 15:47:37,098 INFO L78 Accepts]: Start accepts. Automaton has 24546 states and 122274 transitions. Word has length 24 [2021-10-07 15:47:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:37,099 INFO L470 AbstractCegarLoop]: Abstraction has 24546 states and 122274 transitions. [2021-10-07 15:47:37,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 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) [2021-10-07 15:47:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 24546 states and 122274 transitions. [2021-10-07 15:47:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:37,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:37,179 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:37,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:37,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:37,380 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:37,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1178744124, now seen corresponding path program 67 times [2021-10-07 15:47:37,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:37,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548297040] [2021-10-07 15:47:37,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:47:37,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:37,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:37,385 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:37,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-07 15:47:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:47:38,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:47:38,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:38,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:38,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:38,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548297040] [2021-10-07 15:47:38,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548297040] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:38,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:38,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:47:38,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980028332] [2021-10-07 15:47:38,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:47:38,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:47:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:47:38,649 INFO L87 Difference]: Start difference. First operand 24546 states and 122274 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2021-10-07 15:47:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:40,700 INFO L93 Difference]: Finished difference Result 29444 states and 141876 transitions. [2021-10-07 15:47:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:47:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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 24 [2021-10-07 15:47:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:40,836 INFO L225 Difference]: With dead ends: 29444 [2021-10-07 15:47:40,836 INFO L226 Difference]: Without dead ends: 29432 [2021-10-07 15:47:40,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1303.1ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:47:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29432 states. [2021-10-07 15:47:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29432 to 25198. [2021-10-07 15:47:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25198 states, 25197 states have (on average 4.979957931499782) internal successors, (125480), 25197 states have internal predecessors, (125480), 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) [2021-10-07 15:47:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25198 states to 25198 states and 125480 transitions. [2021-10-07 15:47:42,037 INFO L78 Accepts]: Start accepts. Automaton has 25198 states and 125480 transitions. Word has length 24 [2021-10-07 15:47:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:42,038 INFO L470 AbstractCegarLoop]: Abstraction has 25198 states and 125480 transitions. [2021-10-07 15:47:42,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2021-10-07 15:47:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 25198 states and 125480 transitions. [2021-10-07 15:47:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:42,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:42,130 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:42,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:42,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:42,331 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:42,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:42,332 INFO L82 PathProgramCache]: Analyzing trace with hash 617474818, now seen corresponding path program 68 times [2021-10-07 15:47:42,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:42,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886905516] [2021-10-07 15:47:42,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:47:42,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:42,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:42,335 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:42,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-07 15:47:43,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:47:43,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:43,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:43,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:47:43,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:47:43,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:43,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886905516] [2021-10-07 15:47:43,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886905516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:43,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:43,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:47:43,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311029148] [2021-10-07 15:47:43,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:47:43,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:47:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:43,749 INFO L87 Difference]: Start difference. First operand 25198 states and 125480 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:47:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:45,519 INFO L93 Difference]: Finished difference Result 31632 states and 153973 transitions. [2021-10-07 15:47:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:47:45,521 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 24 [2021-10-07 15:47:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:45,939 INFO L225 Difference]: With dead ends: 31632 [2021-10-07 15:47:45,939 INFO L226 Difference]: Without dead ends: 31594 [2021-10-07 15:47:45,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 792.5ms TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:47:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31594 states. [2021-10-07 15:47:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31594 to 28008. [2021-10-07 15:47:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28008 states, 28007 states have (on average 5.030242439390152) internal successors, (140882), 28007 states have internal predecessors, (140882), 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) [2021-10-07 15:47:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28008 states to 28008 states and 140882 transitions. [2021-10-07 15:47:47,280 INFO L78 Accepts]: Start accepts. Automaton has 28008 states and 140882 transitions. Word has length 24 [2021-10-07 15:47:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:47,281 INFO L470 AbstractCegarLoop]: Abstraction has 28008 states and 140882 transitions. [2021-10-07 15:47:47,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-07 15:47:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 28008 states and 140882 transitions. [2021-10-07 15:47:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:47,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:47,379 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:47,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:47,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:47,580 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:47,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2120693086, now seen corresponding path program 69 times [2021-10-07 15:47:47,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:47,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946330547] [2021-10-07 15:47:47,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:47:47,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:47,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:47,583 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:47,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-07 15:47:48,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:47:48,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:48,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:48,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:47:48,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:47:48,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:48,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946330547] [2021-10-07 15:47:48,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946330547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:48,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:48,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-07 15:47:48,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042593000] [2021-10-07 15:47:48,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:47:48,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:47:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:48,829 INFO L87 Difference]: Start difference. First operand 28008 states and 140882 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2021-10-07 15:47:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:50,863 INFO L93 Difference]: Finished difference Result 33656 states and 165003 transitions. [2021-10-07 15:47:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:47:50,864 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 24 [2021-10-07 15:47:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:51,025 INFO L225 Difference]: With dead ends: 33656 [2021-10-07 15:47:51,025 INFO L226 Difference]: Without dead ends: 33632 [2021-10-07 15:47:51,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 767.5ms TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:47:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33632 states. [2021-10-07 15:47:52,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33632 to 27948. [2021-10-07 15:47:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27948 states, 27947 states have (on average 5.026908076001002) internal successors, (140487), 27947 states have internal predecessors, (140487), 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) [2021-10-07 15:47:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27948 states to 27948 states and 140487 transitions. [2021-10-07 15:47:52,364 INFO L78 Accepts]: Start accepts. Automaton has 27948 states and 140487 transitions. Word has length 24 [2021-10-07 15:47:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:52,365 INFO L470 AbstractCegarLoop]: Abstraction has 27948 states and 140487 transitions. [2021-10-07 15:47:52,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2021-10-07 15:47:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 27948 states and 140487 transitions. [2021-10-07 15:47:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:52,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:52,453 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:52,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2021-10-07 15:47:52,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:52,654 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:52,654 INFO L82 PathProgramCache]: Analyzing trace with hash 798237664, now seen corresponding path program 70 times [2021-10-07 15:47:52,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:52,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390481395] [2021-10-07 15:47:52,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:47:52,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:52,657 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:52,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-07 15:47:53,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:47:53,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:53,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:47:53,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:53,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:54,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:54,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390481395] [2021-10-07 15:47:54,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390481395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:54,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:54,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:47:54,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709027663] [2021-10-07 15:47:54,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:47:54,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:54,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:47:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:47:54,196 INFO L87 Difference]: Start difference. First operand 27948 states and 140487 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-10-07 15:47:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:55,903 INFO L93 Difference]: Finished difference Result 35058 states and 169275 transitions. [2021-10-07 15:47:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:47:55,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 24 [2021-10-07 15:47:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:56,327 INFO L225 Difference]: With dead ends: 35058 [2021-10-07 15:47:56,327 INFO L226 Difference]: Without dead ends: 35030 [2021-10-07 15:47:56,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 963.7ms TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:47:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35030 states. [2021-10-07 15:47:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35030 to 28740. [2021-10-07 15:47:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28740 states, 28739 states have (on average 5.040502453112495) internal successors, (144859), 28739 states have internal predecessors, (144859), 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) [2021-10-07 15:47:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28740 states to 28740 states and 144859 transitions. [2021-10-07 15:47:57,970 INFO L78 Accepts]: Start accepts. Automaton has 28740 states and 144859 transitions. Word has length 24 [2021-10-07 15:47:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:57,970 INFO L470 AbstractCegarLoop]: Abstraction has 28740 states and 144859 transitions. [2021-10-07 15:47:57,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-10-07 15:47:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 28740 states and 144859 transitions. [2021-10-07 15:47:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:47:58,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:58,069 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:47:58,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:58,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:58,270 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:58,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2085265076, now seen corresponding path program 71 times [2021-10-07 15:47:58,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:58,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863696723] [2021-10-07 15:47:58,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:47:58,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:58,273 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:58,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-07 15:47:59,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:47:59,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:59,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:47:59,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:59,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:47:59,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:59,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863696723] [2021-10-07 15:47:59,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863696723] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:59,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:59,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:47:59,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374879690] [2021-10-07 15:47:59,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:47:59,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:47:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:47:59,487 INFO L87 Difference]: Start difference. First operand 28740 states and 144859 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:48:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:01,304 INFO L93 Difference]: Finished difference Result 38342 states and 186953 transitions. [2021-10-07 15:48:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:48:01,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 24 [2021-10-07 15:48:01,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:01,499 INFO L225 Difference]: With dead ends: 38342 [2021-10-07 15:48:01,499 INFO L226 Difference]: Without dead ends: 38318 [2021-10-07 15:48:01,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 734.7ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:48:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38318 states. [2021-10-07 15:48:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38318 to 32382. [2021-10-07 15:48:02,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32382 states, 32381 states have (on average 5.072295481918409) internal successors, (164246), 32381 states have internal predecessors, (164246), 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) [2021-10-07 15:48:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32382 states to 32382 states and 164246 transitions. [2021-10-07 15:48:03,041 INFO L78 Accepts]: Start accepts. Automaton has 32382 states and 164246 transitions. Word has length 24 [2021-10-07 15:48:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:03,041 INFO L470 AbstractCegarLoop]: Abstraction has 32382 states and 164246 transitions. [2021-10-07 15:48:03,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-10-07 15:48:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 32382 states and 164246 transitions. [2021-10-07 15:48:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:48:03,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:03,176 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:03,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:03,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:03,377 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:03,378 INFO L82 PathProgramCache]: Analyzing trace with hash -830847008, now seen corresponding path program 72 times [2021-10-07 15:48:03,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:03,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489420607] [2021-10-07 15:48:03,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:48:03,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:03,380 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:03,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-07 15:48:04,574 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:48:04,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:04,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:48:04,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:04,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:04,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:04,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489420607] [2021-10-07 15:48:04,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489420607] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:04,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:04,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:48:04,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662292284] [2021-10-07 15:48:04,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:48:04,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:48:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:04,845 INFO L87 Difference]: Start difference. First operand 32382 states and 164246 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2021-10-07 15:48:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:05,872 INFO L93 Difference]: Finished difference Result 35954 states and 178946 transitions. [2021-10-07 15:48:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:48:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) Word has length 24 [2021-10-07 15:48:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:06,053 INFO L225 Difference]: With dead ends: 35954 [2021-10-07 15:48:06,053 INFO L226 Difference]: Without dead ends: 35898 [2021-10-07 15:48:06,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 340.6ms TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:48:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35898 states. [2021-10-07 15:48:07,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35898 to 33142. [2021-10-07 15:48:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33142 states, 33141 states have (on average 5.079780332518633) internal successors, (168349), 33141 states have internal predecessors, (168349), 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) [2021-10-07 15:48:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33142 states to 33142 states and 168349 transitions. [2021-10-07 15:48:07,491 INFO L78 Accepts]: Start accepts. Automaton has 33142 states and 168349 transitions. Word has length 24 [2021-10-07 15:48:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:07,491 INFO L470 AbstractCegarLoop]: Abstraction has 33142 states and 168349 transitions. [2021-10-07 15:48:07,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2021-10-07 15:48:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 33142 states and 168349 transitions. [2021-10-07 15:48:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:48:07,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:07,974 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:08,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:08,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:08,175 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash 884271326, now seen corresponding path program 73 times [2021-10-07 15:48:08,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:08,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855923051] [2021-10-07 15:48:08,176 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:48:08,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:08,178 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:08,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-07 15:48:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:08,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:48:08,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:09,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:09,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:09,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855923051] [2021-10-07 15:48:09,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855923051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:09,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:09,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-07 15:48:09,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431324892] [2021-10-07 15:48:09,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:48:09,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:48:09,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:09,329 INFO L87 Difference]: Start difference. First operand 33142 states and 168349 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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) [2021-10-07 15:48:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:10,729 INFO L93 Difference]: Finished difference Result 36354 states and 181480 transitions. [2021-10-07 15:48:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:48:10,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 24 [2021-10-07 15:48:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:11,002 INFO L225 Difference]: With dead ends: 36354 [2021-10-07 15:48:11,002 INFO L226 Difference]: Without dead ends: 36294 [2021-10-07 15:48:11,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 487.4ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:48:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36294 states. [2021-10-07 15:48:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36294 to 33716. [2021-10-07 15:48:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33716 states, 33715 states have (on average 5.090760788966335) internal successors, (171635), 33715 states have internal predecessors, (171635), 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) [2021-10-07 15:48:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33716 states to 33716 states and 171635 transitions. [2021-10-07 15:48:12,780 INFO L78 Accepts]: Start accepts. Automaton has 33716 states and 171635 transitions. Word has length 24 [2021-10-07 15:48:12,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:12,780 INFO L470 AbstractCegarLoop]: Abstraction has 33716 states and 171635 transitions. [2021-10-07 15:48:12,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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) [2021-10-07 15:48:12,781 INFO L276 IsEmpty]: Start isEmpty. Operand 33716 states and 171635 transitions. [2021-10-07 15:48:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:48:12,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:12,885 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:12,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:13,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:13,086 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:13,087 INFO L82 PathProgramCache]: Analyzing trace with hash -896182020, now seen corresponding path program 74 times [2021-10-07 15:48:13,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:13,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699597335] [2021-10-07 15:48:13,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:13,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:13,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:13,089 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:13,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-07 15:48:14,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:14,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:14,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:14,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:14,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:15,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:15,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699597335] [2021-10-07 15:48:15,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699597335] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:15,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:15,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:48:15,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053059123] [2021-10-07 15:48:15,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:48:15,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:48:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:15,585 INFO L87 Difference]: Start difference. First operand 33716 states and 171635 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:48:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:20,429 INFO L93 Difference]: Finished difference Result 37550 states and 188756 transitions. [2021-10-07 15:48:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:48:20,430 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:48:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:20,860 INFO L225 Difference]: With dead ends: 37550 [2021-10-07 15:48:20,860 INFO L226 Difference]: Without dead ends: 37520 [2021-10-07 15:48:20,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 786.7ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:20,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37520 states. [2021-10-07 15:48:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37520 to 36208. [2021-10-07 15:48:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36208 states, 36207 states have (on average 5.089319744800729) internal successors, (184269), 36207 states have internal predecessors, (184269), 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) [2021-10-07 15:48:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36208 states to 36208 states and 184269 transitions. [2021-10-07 15:48:22,562 INFO L78 Accepts]: Start accepts. Automaton has 36208 states and 184269 transitions. Word has length 25 [2021-10-07 15:48:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:22,563 INFO L470 AbstractCegarLoop]: Abstraction has 36208 states and 184269 transitions. [2021-10-07 15:48:22,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:48:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 36208 states and 184269 transitions. [2021-10-07 15:48:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:48:22,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:22,679 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:22,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:22,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:22,880 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:22,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1963868898, now seen corresponding path program 75 times [2021-10-07 15:48:22,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:22,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186967915] [2021-10-07 15:48:22,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:48:22,883 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:22,886 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:22,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-07 15:48:24,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:48:24,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:24,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:24,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:24,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:25,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:25,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186967915] [2021-10-07 15:48:25,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186967915] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:25,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:25,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:48:25,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434335775] [2021-10-07 15:48:25,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:48:25,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:48:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:48:25,770 INFO L87 Difference]: Start difference. First operand 36208 states and 184269 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:48:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:26,974 INFO L93 Difference]: Finished difference Result 37978 states and 191377 transitions. [2021-10-07 15:48:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:48:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:48:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:27,489 INFO L225 Difference]: With dead ends: 37978 [2021-10-07 15:48:27,489 INFO L226 Difference]: Without dead ends: 37964 [2021-10-07 15:48:27,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 871.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:48:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37964 states. [2021-10-07 15:48:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37964 to 37260. [2021-10-07 15:48:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37260 states, 37259 states have (on average 5.076142676937116) internal successors, (189132), 37259 states have internal predecessors, (189132), 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) [2021-10-07 15:48:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37260 states to 37260 states and 189132 transitions. [2021-10-07 15:48:29,298 INFO L78 Accepts]: Start accepts. Automaton has 37260 states and 189132 transitions. Word has length 25 [2021-10-07 15:48:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:29,298 INFO L470 AbstractCegarLoop]: Abstraction has 37260 states and 189132 transitions. [2021-10-07 15:48:29,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:48:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 37260 states and 189132 transitions. [2021-10-07 15:48:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:48:29,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:29,442 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:29,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:29,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,644 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:29,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1634692326, now seen corresponding path program 76 times [2021-10-07 15:48:29,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:29,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629683759] [2021-10-07 15:48:29,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:48:29,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:29,648 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:29,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-07 15:48:30,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:48:30,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:30,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:30,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:32,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:32,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629683759] [2021-10-07 15:48:32,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629683759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:32,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:32,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:48:32,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456402774] [2021-10-07 15:48:32,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:48:32,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:32,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:48:32,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:48:32,613 INFO L87 Difference]: Start difference. First operand 37260 states and 189132 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:48:33,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:33,894 INFO L93 Difference]: Finished difference Result 39034 states and 196382 transitions. [2021-10-07 15:48:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:48:33,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:48:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:34,098 INFO L225 Difference]: With dead ends: 39034 [2021-10-07 15:48:34,098 INFO L226 Difference]: Without dead ends: 39020 [2021-10-07 15:48:34,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1411.5ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:48:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39020 states. [2021-10-07 15:48:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39020 to 38204. [2021-10-07 15:48:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38204 states, 38203 states have (on average 5.070177734732875) internal successors, (193696), 38203 states have internal predecessors, (193696), 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) [2021-10-07 15:48:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38204 states to 38204 states and 193696 transitions. [2021-10-07 15:48:35,753 INFO L78 Accepts]: Start accepts. Automaton has 38204 states and 193696 transitions. Word has length 25 [2021-10-07 15:48:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:35,754 INFO L470 AbstractCegarLoop]: Abstraction has 38204 states and 193696 transitions. [2021-10-07 15:48:35,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:48:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 38204 states and 193696 transitions. [2021-10-07 15:48:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:48:35,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:35,872 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:35,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:36,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:36,073 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:36,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:36,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1626961928, now seen corresponding path program 77 times [2021-10-07 15:48:36,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:36,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755945823] [2021-10-07 15:48:36,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:48:36,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:36,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:36,076 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:36,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-07 15:48:37,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:48:37,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:37,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:37,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:37,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:38,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:38,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755945823] [2021-10-07 15:48:38,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755945823] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:38,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:38,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:48:38,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075636186] [2021-10-07 15:48:38,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:48:38,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:48:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:48:38,764 INFO L87 Difference]: Start difference. First operand 38204 states and 193696 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:48:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:41,800 INFO L93 Difference]: Finished difference Result 39598 states and 199286 transitions. [2021-10-07 15:48:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:48:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:48:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:42,297 INFO L225 Difference]: With dead ends: 39598 [2021-10-07 15:48:42,297 INFO L226 Difference]: Without dead ends: 39574 [2021-10-07 15:48:42,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 812.7ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:48:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39574 states. [2021-10-07 15:48:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39574 to 38834. [2021-10-07 15:48:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38834 states, 38833 states have (on average 5.0683696855767) internal successors, (196820), 38833 states have internal predecessors, (196820), 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) [2021-10-07 15:48:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38834 states to 38834 states and 196820 transitions. [2021-10-07 15:48:44,010 INFO L78 Accepts]: Start accepts. Automaton has 38834 states and 196820 transitions. Word has length 25 [2021-10-07 15:48:44,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:44,010 INFO L470 AbstractCegarLoop]: Abstraction has 38834 states and 196820 transitions. [2021-10-07 15:48:44,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:48:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 38834 states and 196820 transitions. [2021-10-07 15:48:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:48:44,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:44,164 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:44,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:44,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,365 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:44,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1923302870, now seen corresponding path program 78 times [2021-10-07 15:48:44,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:44,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321935725] [2021-10-07 15:48:44,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:48:44,368 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:44,370 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:44,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-07 15:48:45,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:48:45,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:45,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:45,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:46,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:46,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:46,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321935725] [2021-10-07 15:48:46,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321935725] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:46,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:46,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:48:46,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763648375] [2021-10-07 15:48:46,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:48:46,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:48:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:46,657 INFO L87 Difference]: Start difference. First operand 38834 states and 196820 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:48:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:53,948 INFO L93 Difference]: Finished difference Result 39996 states and 201030 transitions. [2021-10-07 15:48:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:48:53,949 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:48:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:54,150 INFO L225 Difference]: With dead ends: 39996 [2021-10-07 15:48:54,150 INFO L226 Difference]: Without dead ends: 39982 [2021-10-07 15:48:54,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 636.8ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39982 states. [2021-10-07 15:48:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39982 to 39124. [2021-10-07 15:48:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39124 states, 39123 states have (on average 5.064949006977993) internal successors, (198156), 39123 states have internal predecessors, (198156), 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) [2021-10-07 15:48:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39124 states to 39124 states and 198156 transitions. [2021-10-07 15:48:55,863 INFO L78 Accepts]: Start accepts. Automaton has 39124 states and 198156 transitions. Word has length 25 [2021-10-07 15:48:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:55,864 INFO L470 AbstractCegarLoop]: Abstraction has 39124 states and 198156 transitions. [2021-10-07 15:48:55,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:48:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 39124 states and 198156 transitions. [2021-10-07 15:48:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:48:55,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:55,975 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:55,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2021-10-07 15:48:56,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:56,176 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:56,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:56,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1251117489, now seen corresponding path program 79 times [2021-10-07 15:48:56,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:56,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777111939] [2021-10-07 15:48:56,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:48:56,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:56,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:56,179 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:56,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-07 15:48:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:57,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:48:57,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:57,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:57,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:57,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777111939] [2021-10-07 15:48:57,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777111939] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:57,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:57,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:48:57,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913158695] [2021-10-07 15:48:57,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:48:57,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:48:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:57,823 INFO L87 Difference]: Start difference. First operand 39124 states and 198156 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2021-10-07 15:49:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:00,153 INFO L93 Difference]: Finished difference Result 69112 states and 344341 transitions. [2021-10-07 15:49:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:49:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 25 [2021-10-07 15:49:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:00,615 INFO L225 Difference]: With dead ends: 69112 [2021-10-07 15:49:00,615 INFO L226 Difference]: Without dead ends: 69106 [2021-10-07 15:49:00,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 865.2ms TimeCoverageRelationStatistics Valid=358, Invalid=1048, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:49:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69106 states. [2021-10-07 15:49:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69106 to 38292. [2021-10-07 15:49:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38292 states, 38291 states have (on average 5.056070617116293) internal successors, (193602), 38291 states have internal predecessors, (193602), 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) [2021-10-07 15:49:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38292 states to 38292 states and 193602 transitions. [2021-10-07 15:49:03,092 INFO L78 Accepts]: Start accepts. Automaton has 38292 states and 193602 transitions. Word has length 25 [2021-10-07 15:49:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:03,092 INFO L470 AbstractCegarLoop]: Abstraction has 38292 states and 193602 transitions. [2021-10-07 15:49:03,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2021-10-07 15:49:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 38292 states and 193602 transitions. [2021-10-07 15:49:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:49:03,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:03,224 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:03,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:03,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:03,425 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2025980768, now seen corresponding path program 80 times [2021-10-07 15:49:03,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:03,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636166467] [2021-10-07 15:49:03,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:03,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:03,429 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:03,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-07 15:49:04,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:04,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:04,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:04,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:05,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636166467] [2021-10-07 15:49:05,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636166467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:05,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:05,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:49:05,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086944839] [2021-10-07 15:49:05,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:05,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:05,962 INFO L87 Difference]: Start difference. First operand 38292 states and 193602 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:07,399 INFO L93 Difference]: Finished difference Result 40022 states and 200532 transitions. [2021-10-07 15:49:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:49:07,400 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:49:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:07,627 INFO L225 Difference]: With dead ends: 40022 [2021-10-07 15:49:07,627 INFO L226 Difference]: Without dead ends: 39982 [2021-10-07 15:49:07,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 882.8ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39982 states. [2021-10-07 15:49:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39982 to 38716. [2021-10-07 15:49:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38716 states, 38715 states have (on average 5.067234921864911) internal successors, (196178), 38715 states have internal predecessors, (196178), 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) [2021-10-07 15:49:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38716 states to 38716 states and 196178 transitions. [2021-10-07 15:49:09,261 INFO L78 Accepts]: Start accepts. Automaton has 38716 states and 196178 transitions. Word has length 25 [2021-10-07 15:49:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:09,261 INFO L470 AbstractCegarLoop]: Abstraction has 38716 states and 196178 transitions. [2021-10-07 15:49:09,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:09,261 INFO L276 IsEmpty]: Start isEmpty. Operand 38716 states and 196178 transitions. [2021-10-07 15:49:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:49:09,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:09,370 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:09,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:09,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:09,571 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash -853145686, now seen corresponding path program 81 times [2021-10-07 15:49:09,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:09,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119710357] [2021-10-07 15:49:09,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:49:09,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:09,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:09,574 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:09,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-07 15:49:11,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:49:11,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:11,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:11,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:11,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:12,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:12,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119710357] [2021-10-07 15:49:12,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119710357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:12,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:12,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:49:12,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828377494] [2021-10-07 15:49:12,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:12,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:12,399 INFO L87 Difference]: Start difference. First operand 38716 states and 196178 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:13,541 INFO L93 Difference]: Finished difference Result 39906 states and 200625 transitions. [2021-10-07 15:49:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:49:13,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:49:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:14,137 INFO L225 Difference]: With dead ends: 39906 [2021-10-07 15:49:14,138 INFO L226 Difference]: Without dead ends: 39886 [2021-10-07 15:49:14,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 754.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39886 states. [2021-10-07 15:49:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39886 to 38978. [2021-10-07 15:49:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38978 states, 38977 states have (on average 5.068373656258819) internal successors, (197550), 38977 states have internal predecessors, (197550), 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) [2021-10-07 15:49:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38978 states to 38978 states and 197550 transitions. [2021-10-07 15:49:16,004 INFO L78 Accepts]: Start accepts. Automaton has 38978 states and 197550 transitions. Word has length 25 [2021-10-07 15:49:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:16,005 INFO L470 AbstractCegarLoop]: Abstraction has 38978 states and 197550 transitions. [2021-10-07 15:49:16,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 38978 states and 197550 transitions. [2021-10-07 15:49:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:49:16,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:16,162 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:16,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:16,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:16,363 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:16,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1300308994, now seen corresponding path program 82 times [2021-10-07 15:49:16,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:16,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089610051] [2021-10-07 15:49:16,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:49:16,365 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:16,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:16,366 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:16,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-07 15:49:17,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:49:17,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:17,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:17,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:18,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:18,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:18,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089610051] [2021-10-07 15:49:18,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089610051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:18,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:18,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:49:18,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927147325] [2021-10-07 15:49:18,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:18,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:18,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:18,689 INFO L87 Difference]: Start difference. First operand 38978 states and 197550 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:22,334 INFO L93 Difference]: Finished difference Result 41054 states and 206340 transitions. [2021-10-07 15:49:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:49:22,335 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:49:22,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:22,565 INFO L225 Difference]: With dead ends: 41054 [2021-10-07 15:49:22,565 INFO L226 Difference]: Without dead ends: 41010 [2021-10-07 15:49:22,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 721.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41010 states. [2021-10-07 15:49:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41010 to 39668. [2021-10-07 15:49:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39668 states, 39667 states have (on average 5.077192628633373) internal successors, (201397), 39667 states have internal predecessors, (201397), 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) [2021-10-07 15:49:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39668 states to 39668 states and 201397 transitions. [2021-10-07 15:49:24,239 INFO L78 Accepts]: Start accepts. Automaton has 39668 states and 201397 transitions. Word has length 25 [2021-10-07 15:49:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:24,239 INFO L470 AbstractCegarLoop]: Abstraction has 39668 states and 201397 transitions. [2021-10-07 15:49:24,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 39668 states and 201397 transitions. [2021-10-07 15:49:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:49:24,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:24,378 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:24,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2021-10-07 15:49:24,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:24,579 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:24,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2044921604, now seen corresponding path program 83 times [2021-10-07 15:49:24,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:24,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85834362] [2021-10-07 15:49:24,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:49:24,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:24,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:24,582 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:24,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-07 15:49:26,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:49:26,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:26,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:26,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:26,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:27,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:27,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85834362] [2021-10-07 15:49:27,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85834362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:27,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:27,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:49:27,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087654227] [2021-10-07 15:49:27,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:49:27,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:49:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:49:27,269 INFO L87 Difference]: Start difference. First operand 39668 states and 201397 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:49:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:33,242 INFO L93 Difference]: Finished difference Result 41742 states and 210196 transitions. [2021-10-07 15:49:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:49:33,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:49:33,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:33,830 INFO L225 Difference]: With dead ends: 41742 [2021-10-07 15:49:33,830 INFO L226 Difference]: Without dead ends: 41712 [2021-10-07 15:49:33,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 593.9ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:49:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41712 states. [2021-10-07 15:49:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41712 to 40436. [2021-10-07 15:49:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40436 states, 40435 states have (on average 5.088141461605045) internal successors, (205739), 40435 states have internal predecessors, (205739), 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) [2021-10-07 15:49:35,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40436 states to 40436 states and 205739 transitions. [2021-10-07 15:49:35,760 INFO L78 Accepts]: Start accepts. Automaton has 40436 states and 205739 transitions. Word has length 25 [2021-10-07 15:49:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:35,761 INFO L470 AbstractCegarLoop]: Abstraction has 40436 states and 205739 transitions. [2021-10-07 15:49:35,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:49:35,761 INFO L276 IsEmpty]: Start isEmpty. Operand 40436 states and 205739 transitions. [2021-10-07 15:49:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:49:35,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:35,927 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:35,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2021-10-07 15:49:36,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:36,128 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1947914748, now seen corresponding path program 84 times [2021-10-07 15:49:36,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:36,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521884077] [2021-10-07 15:49:36,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:49:36,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:36,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:36,133 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:36,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-07 15:49:37,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:49:37,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:37,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:37,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:38,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:38,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:38,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521884077] [2021-10-07 15:49:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521884077] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:38,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:49:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177488499] [2021-10-07 15:49:38,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:38,482 INFO L87 Difference]: Start difference. First operand 40436 states and 205739 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:41,464 INFO L93 Difference]: Finished difference Result 41726 states and 210795 transitions. [2021-10-07 15:49:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:49:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:49:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:41,685 INFO L225 Difference]: With dead ends: 41726 [2021-10-07 15:49:41,686 INFO L226 Difference]: Without dead ends: 41692 [2021-10-07 15:49:41,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 542.2ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41692 states. [2021-10-07 15:49:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41692 to 40616. [2021-10-07 15:49:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40616 states, 40615 states have (on average 5.095580450572449) internal successors, (206957), 40615 states have internal predecessors, (206957), 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) [2021-10-07 15:49:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40616 states to 40616 states and 206957 transitions. [2021-10-07 15:49:43,513 INFO L78 Accepts]: Start accepts. Automaton has 40616 states and 206957 transitions. Word has length 25 [2021-10-07 15:49:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:43,513 INFO L470 AbstractCegarLoop]: Abstraction has 40616 states and 206957 transitions. [2021-10-07 15:49:43,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 40616 states and 206957 transitions. [2021-10-07 15:49:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:49:43,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:43,650 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:43,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:43,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:43,851 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:43,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1602065630, now seen corresponding path program 85 times [2021-10-07 15:49:43,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:43,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060774866] [2021-10-07 15:49:43,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:49:43,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:43,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:43,854 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:43,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-07 15:49:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:45,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:45,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:45,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:48,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:48,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060774866] [2021-10-07 15:49:48,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060774866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:48,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:48,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:49:48,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496049111] [2021-10-07 15:49:48,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:48,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:48,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:48,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=149, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:49:48,475 INFO L87 Difference]: Start difference. First operand 40616 states and 206957 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:51,774 INFO L93 Difference]: Finished difference Result 42238 states and 213336 transitions. [2021-10-07 15:49:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:49:51,776 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:49:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:52,347 INFO L225 Difference]: With dead ends: 42238 [2021-10-07 15:49:52,348 INFO L226 Difference]: Without dead ends: 42202 [2021-10-07 15:49:52,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2969.8ms TimeCoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:49:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42202 states. [2021-10-07 15:49:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42202 to 40846. [2021-10-07 15:49:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40846 states, 40845 states have (on average 5.100771208226221) internal successors, (208341), 40845 states have internal predecessors, (208341), 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) [2021-10-07 15:49:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40846 states to 40846 states and 208341 transitions. [2021-10-07 15:49:54,365 INFO L78 Accepts]: Start accepts. Automaton has 40846 states and 208341 transitions. Word has length 25 [2021-10-07 15:49:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:54,365 INFO L470 AbstractCegarLoop]: Abstraction has 40846 states and 208341 transitions. [2021-10-07 15:49:54,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 40846 states and 208341 transitions. [2021-10-07 15:49:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:49:54,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:54,502 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:54,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:54,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:54,703 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash -133737166, now seen corresponding path program 86 times [2021-10-07 15:49:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:54,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10865954] [2021-10-07 15:49:54,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:54,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:54,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:54,706 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:54,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-07 15:49:55,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:55,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:55,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:55,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:56,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:49:57,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:57,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10865954] [2021-10-07 15:49:57,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10865954] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:57,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:57,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:49:57,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014200723] [2021-10-07 15:49:57,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:57,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:57,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:57,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:57,116 INFO L87 Difference]: Start difference. First operand 40846 states and 208341 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:49:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:59,099 INFO L93 Difference]: Finished difference Result 41958 states and 212594 transitions. [2021-10-07 15:49:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:49:59,100 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:49:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:59,312 INFO L225 Difference]: With dead ends: 41958 [2021-10-07 15:49:59,312 INFO L226 Difference]: Without dead ends: 41944 [2021-10-07 15:49:59,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 594.2ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41944 states. [2021-10-07 15:50:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41944 to 41110. [2021-10-07 15:50:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41110 states, 41109 states have (on average 5.102507966625313) internal successors, (209759), 41109 states have internal predecessors, (209759), 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) [2021-10-07 15:50:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41110 states to 41110 states and 209759 transitions. [2021-10-07 15:50:01,139 INFO L78 Accepts]: Start accepts. Automaton has 41110 states and 209759 transitions. Word has length 25 [2021-10-07 15:50:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:01,139 INFO L470 AbstractCegarLoop]: Abstraction has 41110 states and 209759 transitions. [2021-10-07 15:50:01,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 41110 states and 209759 transitions. [2021-10-07 15:50:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:50:01,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:01,747 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:01,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:01,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:01,961 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:01,961 INFO L82 PathProgramCache]: Analyzing trace with hash -313284762, now seen corresponding path program 87 times [2021-10-07 15:50:01,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:01,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734665605] [2021-10-07 15:50:01,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:50:01,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:01,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:01,964 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:01,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-07 15:50:03,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:50:03,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:03,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:50:03,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:03,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:04,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:04,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734665605] [2021-10-07 15:50:04,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734665605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:04,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:04,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:50:04,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806256805] [2021-10-07 15:50:04,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:04,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:04,966 INFO L87 Difference]: Start difference. First operand 41110 states and 209759 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:08,570 INFO L93 Difference]: Finished difference Result 43184 states and 218440 transitions. [2021-10-07 15:50:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:50:08,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:50:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:08,919 INFO L225 Difference]: With dead ends: 43184 [2021-10-07 15:50:08,920 INFO L226 Difference]: Without dead ends: 43152 [2021-10-07 15:50:08,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1325.4ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43152 states. [2021-10-07 15:50:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43152 to 41830. [2021-10-07 15:50:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41830 states, 41829 states have (on average 5.109445599942624) internal successors, (213723), 41829 states have internal predecessors, (213723), 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) [2021-10-07 15:50:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41830 states to 41830 states and 213723 transitions. [2021-10-07 15:50:11,067 INFO L78 Accepts]: Start accepts. Automaton has 41830 states and 213723 transitions. Word has length 25 [2021-10-07 15:50:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:11,068 INFO L470 AbstractCegarLoop]: Abstraction has 41830 states and 213723 transitions. [2021-10-07 15:50:11,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 41830 states and 213723 transitions. [2021-10-07 15:50:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:50:11,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:11,211 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:11,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:11,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:11,412 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:11,413 INFO L82 PathProgramCache]: Analyzing trace with hash 423687338, now seen corresponding path program 88 times [2021-10-07 15:50:11,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:11,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159820029] [2021-10-07 15:50:11,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:50:11,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:11,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:11,416 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:11,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-07 15:50:12,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:50:12,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:12,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:50:12,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:13,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:14,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:14,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159820029] [2021-10-07 15:50:14,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159820029] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:14,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:14,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:50:14,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360448591] [2021-10-07 15:50:14,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:14,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:14,034 INFO L87 Difference]: Start difference. First operand 41830 states and 213723 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:15,758 INFO L93 Difference]: Finished difference Result 43262 states and 219466 transitions. [2021-10-07 15:50:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:50:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:50:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:15,948 INFO L225 Difference]: With dead ends: 43262 [2021-10-07 15:50:15,949 INFO L226 Difference]: Without dead ends: 43244 [2021-10-07 15:50:15,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 625.7ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43244 states. [2021-10-07 15:50:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43244 to 42186. [2021-10-07 15:50:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42186 states, 42185 states have (on average 5.11809885030224) internal successors, (215907), 42185 states have internal predecessors, (215907), 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) [2021-10-07 15:50:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42186 states to 42186 states and 215907 transitions. [2021-10-07 15:50:18,071 INFO L78 Accepts]: Start accepts. Automaton has 42186 states and 215907 transitions. Word has length 25 [2021-10-07 15:50:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:18,072 INFO L470 AbstractCegarLoop]: Abstraction has 42186 states and 215907 transitions. [2021-10-07 15:50:18,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 42186 states and 215907 transitions. [2021-10-07 15:50:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:50:18,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:18,306 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:18,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:18,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:18,521 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:18,522 INFO L82 PathProgramCache]: Analyzing trace with hash 949171284, now seen corresponding path program 89 times [2021-10-07 15:50:18,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:18,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891566797] [2021-10-07 15:50:18,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:50:18,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:18,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:18,524 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:18,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-07 15:50:19,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:50:19,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:19,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:50:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:20,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:20,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:20,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891566797] [2021-10-07 15:50:20,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891566797] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:20,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:20,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:50:20,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703943301] [2021-10-07 15:50:20,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:20,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:20,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:20,880 INFO L87 Difference]: Start difference. First operand 42186 states and 215907 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:24,777 INFO L93 Difference]: Finished difference Result 43972 states and 222810 transitions. [2021-10-07 15:50:24,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:50:24,778 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:50:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:25,045 INFO L225 Difference]: With dead ends: 43972 [2021-10-07 15:50:25,045 INFO L226 Difference]: Without dead ends: 43948 [2021-10-07 15:50:25,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 627.1ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43948 states. [2021-10-07 15:50:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43948 to 42472. [2021-10-07 15:50:26,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42472 states, 42471 states have (on average 5.123189941371759) internal successors, (217587), 42471 states have internal predecessors, (217587), 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) [2021-10-07 15:50:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42472 states to 42472 states and 217587 transitions. [2021-10-07 15:50:27,124 INFO L78 Accepts]: Start accepts. Automaton has 42472 states and 217587 transitions. Word has length 25 [2021-10-07 15:50:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:27,125 INFO L470 AbstractCegarLoop]: Abstraction has 42472 states and 217587 transitions. [2021-10-07 15:50:27,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:27,125 INFO L276 IsEmpty]: Start isEmpty. Operand 42472 states and 217587 transitions. [2021-10-07 15:50:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:50:27,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:27,712 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:27,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:27,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:27,913 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:27,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:27,914 INFO L82 PathProgramCache]: Analyzing trace with hash 949422054, now seen corresponding path program 90 times [2021-10-07 15:50:27,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:27,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824223685] [2021-10-07 15:50:27,914 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:50:27,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:27,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:27,916 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:27,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-07 15:50:29,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:50:29,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:29,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:50:29,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:29,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:50:32,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:32,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824223685] [2021-10-07 15:50:32,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824223685] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:32,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:32,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:50:32,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688787015] [2021-10-07 15:50:32,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:32,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:32,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=148, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:50:32,247 INFO L87 Difference]: Start difference. First operand 42472 states and 217587 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:35,547 INFO L93 Difference]: Finished difference Result 43658 states and 222214 transitions. [2021-10-07 15:50:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:50:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:50:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:35,813 INFO L225 Difference]: With dead ends: 43658 [2021-10-07 15:50:35,813 INFO L226 Difference]: Without dead ends: 43644 [2021-10-07 15:50:35,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2488.5ms TimeCoverageRelationStatistics Valid=33, Invalid=148, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:50:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43644 states. [2021-10-07 15:50:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43644 to 42692. [2021-10-07 15:50:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42692 states, 42691 states have (on average 5.12974631655384) internal successors, (218994), 42691 states have internal predecessors, (218994), 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) [2021-10-07 15:50:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42692 states to 42692 states and 218994 transitions. [2021-10-07 15:50:37,829 INFO L78 Accepts]: Start accepts. Automaton has 42692 states and 218994 transitions. Word has length 25 [2021-10-07 15:50:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:37,830 INFO L470 AbstractCegarLoop]: Abstraction has 42692 states and 218994 transitions. [2021-10-07 15:50:37,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 42692 states and 218994 transitions. [2021-10-07 15:50:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:50:37,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:37,959 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:37,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:38,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:38,171 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:38,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1132229860, now seen corresponding path program 91 times [2021-10-07 15:50:38,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:38,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027494499] [2021-10-07 15:50:38,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:50:38,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:38,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:38,174 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:38,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-07 15:50:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:39,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:50:39,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:40,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:50:41,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:41,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027494499] [2021-10-07 15:50:41,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027494499] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:41,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:41,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:50:41,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658367704] [2021-10-07 15:50:41,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:41,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:41,033 INFO L87 Difference]: Start difference. First operand 42692 states and 218994 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:42,999 INFO L93 Difference]: Finished difference Result 44138 states and 224901 transitions. [2021-10-07 15:50:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:50:42,999 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:50:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:43,585 INFO L225 Difference]: With dead ends: 44138 [2021-10-07 15:50:43,585 INFO L226 Difference]: Without dead ends: 44096 [2021-10-07 15:50:43,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 612.9ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44096 states. [2021-10-07 15:50:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44096 to 43068. [2021-10-07 15:50:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43068 states, 43067 states have (on average 5.140200153249588) internal successors, (221373), 43067 states have internal predecessors, (221373), 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) [2021-10-07 15:50:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43068 states to 43068 states and 221373 transitions. [2021-10-07 15:50:45,589 INFO L78 Accepts]: Start accepts. Automaton has 43068 states and 221373 transitions. Word has length 25 [2021-10-07 15:50:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:45,589 INFO L470 AbstractCegarLoop]: Abstraction has 43068 states and 221373 transitions. [2021-10-07 15:50:45,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 43068 states and 221373 transitions. [2021-10-07 15:50:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:50:45,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:45,743 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:45,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:45,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:45,945 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1175506668, now seen corresponding path program 92 times [2021-10-07 15:50:45,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:45,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627426055] [2021-10-07 15:50:45,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:50:45,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:45,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:45,949 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:45,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-07 15:50:47,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:50:47,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:47,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:50:47,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:47,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:50,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:50,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627426055] [2021-10-07 15:50:50,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627426055] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:50,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:50,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:50:50,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076371047] [2021-10-07 15:50:50,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:50,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=148, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:50:50,416 INFO L87 Difference]: Start difference. First operand 43068 states and 221373 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:53,829 INFO L93 Difference]: Finished difference Result 43976 states and 224657 transitions. [2021-10-07 15:50:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:50:53,831 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:50:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:54,189 INFO L225 Difference]: With dead ends: 43976 [2021-10-07 15:50:54,189 INFO L226 Difference]: Without dead ends: 43962 [2021-10-07 15:50:54,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2637.0ms TimeCoverageRelationStatistics Valid=33, Invalid=148, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:50:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43962 states. [2021-10-07 15:50:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43962 to 43268. [2021-10-07 15:50:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43268 states, 43267 states have (on average 5.140407238773199) internal successors, (222410), 43267 states have internal predecessors, (222410), 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) [2021-10-07 15:50:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43268 states to 43268 states and 222410 transitions. [2021-10-07 15:50:56,236 INFO L78 Accepts]: Start accepts. Automaton has 43268 states and 222410 transitions. Word has length 25 [2021-10-07 15:50:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:56,236 INFO L470 AbstractCegarLoop]: Abstraction has 43268 states and 222410 transitions. [2021-10-07 15:50:56,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:50:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand 43268 states and 222410 transitions. [2021-10-07 15:50:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:50:56,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:56,915 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:56,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:57,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:57,133 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:57,133 INFO L82 PathProgramCache]: Analyzing trace with hash 181087210, now seen corresponding path program 93 times [2021-10-07 15:50:57,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:57,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784664004] [2021-10-07 15:50:57,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:50:57,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:57,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:57,136 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:57,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-07 15:50:58,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:50:58,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:58,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:50:58,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:59,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:59,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:59,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784664004] [2021-10-07 15:50:59,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784664004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:59,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:59,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:50:59,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541261628] [2021-10-07 15:50:59,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:59,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:59,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:59,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:59,903 INFO L87 Difference]: Start difference. First operand 43268 states and 222410 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:01,611 INFO L93 Difference]: Finished difference Result 44358 states and 226315 transitions. [2021-10-07 15:51:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:51:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:01,858 INFO L225 Difference]: With dead ends: 44358 [2021-10-07 15:51:01,858 INFO L226 Difference]: Without dead ends: 44320 [2021-10-07 15:51:01,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 804.1ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44320 states. [2021-10-07 15:51:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44320 to 43470. [2021-10-07 15:51:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43470 states, 43469 states have (on average 5.141319100968507) internal successors, (223488), 43469 states have internal predecessors, (223488), 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) [2021-10-07 15:51:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43470 states to 43470 states and 223488 transitions. [2021-10-07 15:51:03,825 INFO L78 Accepts]: Start accepts. Automaton has 43470 states and 223488 transitions. Word has length 25 [2021-10-07 15:51:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:03,825 INFO L470 AbstractCegarLoop]: Abstraction has 43470 states and 223488 transitions. [2021-10-07 15:51:03,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 43470 states and 223488 transitions. [2021-10-07 15:51:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:51:03,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:03,963 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:03,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:04,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:04,164 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:04,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:04,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1554715586, now seen corresponding path program 94 times [2021-10-07 15:51:04,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:04,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077403693] [2021-10-07 15:51:04,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:04,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:04,167 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:04,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-10-07 15:51:05,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:05,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:05,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:51:05,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:06,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:51:06,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:06,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077403693] [2021-10-07 15:51:06,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077403693] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:06,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:06,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:51:06,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974651324] [2021-10-07 15:51:06,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:51:06,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:51:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:51:06,989 INFO L87 Difference]: Start difference. First operand 43470 states and 223488 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:51:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:11,017 INFO L93 Difference]: Finished difference Result 44884 states and 229152 transitions. [2021-10-07 15:51:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:51:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:51:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:11,575 INFO L225 Difference]: With dead ends: 44884 [2021-10-07 15:51:11,575 INFO L226 Difference]: Without dead ends: 44870 [2021-10-07 15:51:11,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 646.2ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:51:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44870 states. [2021-10-07 15:51:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44870 to 43824. [2021-10-07 15:51:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43824 states, 43823 states have (on average 5.149099787782672) internal successors, (225649), 43823 states have internal predecessors, (225649), 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) [2021-10-07 15:51:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43824 states to 43824 states and 225649 transitions. [2021-10-07 15:51:13,691 INFO L78 Accepts]: Start accepts. Automaton has 43824 states and 225649 transitions. Word has length 25 [2021-10-07 15:51:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:13,691 INFO L470 AbstractCegarLoop]: Abstraction has 43824 states and 225649 transitions. [2021-10-07 15:51:13,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:51:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 43824 states and 225649 transitions. [2021-10-07 15:51:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:51:13,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:13,829 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:13,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:14,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:14,030 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:14,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:14,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1019769838, now seen corresponding path program 95 times [2021-10-07 15:51:14,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:14,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202698073] [2021-10-07 15:51:14,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:51:14,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:14,033 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:14,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-10-07 15:51:15,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:51:15,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:15,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:51:15,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:16,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:17,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:17,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202698073] [2021-10-07 15:51:17,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202698073] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:17,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:17,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:51:17,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731816520] [2021-10-07 15:51:17,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:17,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:17,437 INFO L87 Difference]: Start difference. First operand 43824 states and 225649 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:18,508 INFO L93 Difference]: Finished difference Result 45282 states and 231598 transitions. [2021-10-07 15:51:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:51:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:18,777 INFO L225 Difference]: With dead ends: 45282 [2021-10-07 15:51:18,778 INFO L226 Difference]: Without dead ends: 45268 [2021-10-07 15:51:18,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1266.7ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45268 states. [2021-10-07 15:51:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45268 to 44384. [2021-10-07 15:51:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44384 states, 44383 states have (on average 5.152175382466259) internal successors, (228669), 44383 states have internal predecessors, (228669), 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) [2021-10-07 15:51:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44384 states to 44384 states and 228669 transitions. [2021-10-07 15:51:21,113 INFO L78 Accepts]: Start accepts. Automaton has 44384 states and 228669 transitions. Word has length 25 [2021-10-07 15:51:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:21,114 INFO L470 AbstractCegarLoop]: Abstraction has 44384 states and 228669 transitions. [2021-10-07 15:51:21,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 44384 states and 228669 transitions. [2021-10-07 15:51:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:51:21,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:21,324 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:21,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Ended with exit code 0 [2021-10-07 15:51:21,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:21,525 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:21,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:21,526 INFO L82 PathProgramCache]: Analyzing trace with hash -40186642, now seen corresponding path program 96 times [2021-10-07 15:51:21,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:21,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487080817] [2021-10-07 15:51:21,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:51:21,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:21,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:21,529 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:21,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-10-07 15:51:22,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:51:22,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:22,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:51:22,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:23,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:24,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:24,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487080817] [2021-10-07 15:51:24,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487080817] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:24,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:24,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:51:24,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124573572] [2021-10-07 15:51:24,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:24,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:24,192 INFO L87 Difference]: Start difference. First operand 44384 states and 228669 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:26,580 INFO L93 Difference]: Finished difference Result 46170 states and 235711 transitions. [2021-10-07 15:51:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:26,581 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:51:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:26,823 INFO L225 Difference]: With dead ends: 46170 [2021-10-07 15:51:26,823 INFO L226 Difference]: Without dead ends: 46156 [2021-10-07 15:51:26,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 725.5ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46156 states. [2021-10-07 15:51:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46156 to 44836. [2021-10-07 15:51:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44836 states, 44835 states have (on average 5.158447641351622) internal successors, (231279), 44835 states have internal predecessors, (231279), 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) [2021-10-07 15:51:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44836 states to 44836 states and 231279 transitions. [2021-10-07 15:51:28,822 INFO L78 Accepts]: Start accepts. Automaton has 44836 states and 231279 transitions. Word has length 25 [2021-10-07 15:51:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:28,822 INFO L470 AbstractCegarLoop]: Abstraction has 44836 states and 231279 transitions. [2021-10-07 15:51:28,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 44836 states and 231279 transitions. [2021-10-07 15:51:29,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:51:29,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:29,446 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:29,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:29,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:29,647 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:29,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:29,647 INFO L82 PathProgramCache]: Analyzing trace with hash -47917040, now seen corresponding path program 97 times [2021-10-07 15:51:29,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:29,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070656380] [2021-10-07 15:51:29,648 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:51:29,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:29,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:29,650 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:29,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-10-07 15:51:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:51:30,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:51:30,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:31,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:51:35,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:35,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070656380] [2021-10-07 15:51:35,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070656380] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:35,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:35,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:51:35,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267121667] [2021-10-07 15:51:35,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:51:35,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:51:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=175, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:51:35,029 INFO L87 Difference]: Start difference. First operand 44836 states and 231279 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:51:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:38,883 INFO L93 Difference]: Finished difference Result 47222 states and 240350 transitions. [2021-10-07 15:51:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:51:38,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:51:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:39,205 INFO L225 Difference]: With dead ends: 47222 [2021-10-07 15:51:39,205 INFO L226 Difference]: Without dead ends: 47208 [2021-10-07 15:51:39,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3941.4ms TimeCoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2021-10-07 15:51:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47208 states. [2021-10-07 15:51:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47208 to 45034. [2021-10-07 15:51:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45034 states, 45033 states have (on average 5.16396864521573) internal successors, (232549), 45033 states have internal predecessors, (232549), 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) [2021-10-07 15:51:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45034 states to 45034 states and 232549 transitions. [2021-10-07 15:51:41,305 INFO L78 Accepts]: Start accepts. Automaton has 45034 states and 232549 transitions. Word has length 25 [2021-10-07 15:51:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:41,306 INFO L470 AbstractCegarLoop]: Abstraction has 45034 states and 232549 transitions. [2021-10-07 15:51:41,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:51:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 45034 states and 232549 transitions. [2021-10-07 15:51:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:51:41,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:41,466 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:41,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:41,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:41,668 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:41,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1124918042, now seen corresponding path program 98 times [2021-10-07 15:51:41,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:41,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372543496] [2021-10-07 15:51:41,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:41,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:41,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:41,671 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:41,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-10-07 15:51:43,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:51:43,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:43,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:51:43,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:44,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:44,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:44,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372543496] [2021-10-07 15:51:44,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372543496] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:44,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:44,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:51:44,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056425529] [2021-10-07 15:51:44,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:44,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:44,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:44,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:44,791 INFO L87 Difference]: Start difference. First operand 45034 states and 232549 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:48,240 INFO L93 Difference]: Finished difference Result 46440 states and 238157 transitions. [2021-10-07 15:51:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:51:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:48,490 INFO L225 Difference]: With dead ends: 46440 [2021-10-07 15:51:48,491 INFO L226 Difference]: Without dead ends: 46418 [2021-10-07 15:51:48,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 684.3ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46418 states. [2021-10-07 15:51:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46418 to 45428. [2021-10-07 15:51:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45428 states, 45427 states have (on average 5.170977612433134) internal successors, (234902), 45427 states have internal predecessors, (234902), 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) [2021-10-07 15:51:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45428 states to 45428 states and 234902 transitions. [2021-10-07 15:51:51,197 INFO L78 Accepts]: Start accepts. Automaton has 45428 states and 234902 transitions. Word has length 25 [2021-10-07 15:51:51,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:51,197 INFO L470 AbstractCegarLoop]: Abstraction has 45428 states and 234902 transitions. [2021-10-07 15:51:51,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 45428 states and 234902 transitions. [2021-10-07 15:51:51,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:51:51,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:51,387 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:51,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:51,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:51,604 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:51,605 INFO L82 PathProgramCache]: Analyzing trace with hash -714837938, now seen corresponding path program 99 times [2021-10-07 15:51:51,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:51,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628769874] [2021-10-07 15:51:51,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:51,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:51,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:51,607 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-10-07 15:51:53,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:51:53,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:53,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:51:53,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:54,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:51:54,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:54,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628769874] [2021-10-07 15:51:54,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628769874] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:54,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:54,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:51:54,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052372339] [2021-10-07 15:51:54,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:54,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:54,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:54,799 INFO L87 Difference]: Start difference. First operand 45428 states and 234902 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:55,817 INFO L93 Difference]: Finished difference Result 46582 states and 239357 transitions. [2021-10-07 15:51:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:51:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:56,442 INFO L225 Difference]: With dead ends: 46582 [2021-10-07 15:51:56,442 INFO L226 Difference]: Without dead ends: 46568 [2021-10-07 15:51:56,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 784.2ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46568 states. [2021-10-07 15:51:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46568 to 45722. [2021-10-07 15:51:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45722 states, 45721 states have (on average 5.1741869162966685) internal successors, (236569), 45721 states have internal predecessors, (236569), 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) [2021-10-07 15:51:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45722 states to 45722 states and 236569 transitions. [2021-10-07 15:51:58,686 INFO L78 Accepts]: Start accepts. Automaton has 45722 states and 236569 transitions. Word has length 25 [2021-10-07 15:51:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:58,687 INFO L470 AbstractCegarLoop]: Abstraction has 45722 states and 236569 transitions. [2021-10-07 15:51:58,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:51:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 45722 states and 236569 transitions. [2021-10-07 15:51:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:51:58,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:58,839 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:58,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:59,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:59,040 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:59,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:59,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1844326562, now seen corresponding path program 100 times [2021-10-07 15:51:59,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:59,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596363794] [2021-10-07 15:51:59,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:59,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:59,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:59,044 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:59,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-10-07 15:52:00,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:52:00,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:00,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:52:00,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:02,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:52:03,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:03,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596363794] [2021-10-07 15:52:03,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596363794] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:03,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:03,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:52:03,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000374636] [2021-10-07 15:52:03,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:52:03,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:03,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:52:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:03,628 INFO L87 Difference]: Start difference. First operand 45722 states and 236569 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:06,753 INFO L93 Difference]: Finished difference Result 46992 states and 241594 transitions. [2021-10-07 15:52:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:52:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:52:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:07,022 INFO L225 Difference]: With dead ends: 46992 [2021-10-07 15:52:07,022 INFO L226 Difference]: Without dead ends: 46948 [2021-10-07 15:52:07,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2189.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46948 states. [2021-10-07 15:52:08,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46948 to 46046. [2021-10-07 15:52:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46046 states, 46045 states have (on average 5.179997828211532) internal successors, (238513), 46045 states have internal predecessors, (238513), 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) [2021-10-07 15:52:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46046 states to 46046 states and 238513 transitions. [2021-10-07 15:52:09,440 INFO L78 Accepts]: Start accepts. Automaton has 46046 states and 238513 transitions. Word has length 25 [2021-10-07 15:52:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:09,440 INFO L470 AbstractCegarLoop]: Abstraction has 46046 states and 238513 transitions. [2021-10-07 15:52:09,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 46046 states and 238513 transitions. [2021-10-07 15:52:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:52:09,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:09,577 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:09,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:09,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:09,778 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:09,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1156938820, now seen corresponding path program 101 times [2021-10-07 15:52:09,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:09,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614118209] [2021-10-07 15:52:09,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:52:09,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:09,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:09,781 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:09,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-10-07 15:52:11,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:52:11,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:11,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:52:11,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:12,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:12,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:12,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614118209] [2021-10-07 15:52:12,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614118209] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:12,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:12,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:52:12,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399986457] [2021-10-07 15:52:12,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:52:12,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:12,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:52:12,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:52:12,797 INFO L87 Difference]: Start difference. First operand 46046 states and 238513 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:52:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:20,757 INFO L93 Difference]: Finished difference Result 47508 states and 244014 transitions. [2021-10-07 15:52:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:52:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:52:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:20,980 INFO L225 Difference]: With dead ends: 47508 [2021-10-07 15:52:20,981 INFO L226 Difference]: Without dead ends: 47488 [2021-10-07 15:52:20,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 700.0ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:52:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47488 states. [2021-10-07 15:52:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47488 to 46506. [2021-10-07 15:52:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46506 states, 46505 states have (on average 5.177980862272874) internal successors, (240802), 46505 states have internal predecessors, (240802), 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) [2021-10-07 15:52:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46506 states to 46506 states and 240802 transitions. [2021-10-07 15:52:23,342 INFO L78 Accepts]: Start accepts. Automaton has 46506 states and 240802 transitions. Word has length 25 [2021-10-07 15:52:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:23,342 INFO L470 AbstractCegarLoop]: Abstraction has 46506 states and 240802 transitions. [2021-10-07 15:52:23,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:52:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 46506 states and 240802 transitions. [2021-10-07 15:52:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:52:23,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:23,479 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:23,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:23,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:23,680 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1946252558, now seen corresponding path program 102 times [2021-10-07 15:52:23,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:23,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8801311] [2021-10-07 15:52:23,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:52:23,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:23,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:23,684 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-10-07 15:52:25,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:52:25,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:25,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:52:25,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:25,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:26,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:26,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8801311] [2021-10-07 15:52:26,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8801311] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:26,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:26,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:52:26,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309836394] [2021-10-07 15:52:26,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:52:26,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:26,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:52:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:26,729 INFO L87 Difference]: Start difference. First operand 46506 states and 240802 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:29,593 INFO L93 Difference]: Finished difference Result 47582 states and 244928 transitions. [2021-10-07 15:52:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:52:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:52:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:29,842 INFO L225 Difference]: With dead ends: 47582 [2021-10-07 15:52:29,842 INFO L226 Difference]: Without dead ends: 47568 [2021-10-07 15:52:29,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 626.1ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47568 states. [2021-10-07 15:52:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47568 to 46912. [2021-10-07 15:52:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46912 states, 46911 states have (on average 5.177186587367569) internal successors, (242867), 46911 states have internal predecessors, (242867), 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) [2021-10-07 15:52:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46912 states to 46912 states and 242867 transitions. [2021-10-07 15:52:32,196 INFO L78 Accepts]: Start accepts. Automaton has 46912 states and 242867 transitions. Word has length 25 [2021-10-07 15:52:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:32,197 INFO L470 AbstractCegarLoop]: Abstraction has 46912 states and 242867 transitions. [2021-10-07 15:52:32,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 46912 states and 242867 transitions. [2021-10-07 15:52:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:52:32,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:32,352 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:32,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:32,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:32,553 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:32,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:32,553 INFO L82 PathProgramCache]: Analyzing trace with hash 28176506, now seen corresponding path program 103 times [2021-10-07 15:52:32,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:32,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430987969] [2021-10-07 15:52:32,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:52:32,555 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:32,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:32,556 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:32,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-10-07 15:52:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:52:33,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:52:33,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:34,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:35,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:35,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430987969] [2021-10-07 15:52:35,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430987969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:35,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:35,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:52:35,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595779330] [2021-10-07 15:52:35,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:52:35,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:52:35,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:35,087 INFO L87 Difference]: Start difference. First operand 46912 states and 242867 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:36,688 INFO L93 Difference]: Finished difference Result 47994 states and 246931 transitions. [2021-10-07 15:52:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:52:36,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:52:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:36,939 INFO L225 Difference]: With dead ends: 47994 [2021-10-07 15:52:36,939 INFO L226 Difference]: Without dead ends: 47980 [2021-10-07 15:52:36,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 594.7ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47980 states. [2021-10-07 15:52:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47980 to 47256. [2021-10-07 15:52:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47256 states, 47255 states have (on average 5.176192995450217) internal successors, (244601), 47255 states have internal predecessors, (244601), 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) [2021-10-07 15:52:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47256 states to 47256 states and 244601 transitions. [2021-10-07 15:52:39,398 INFO L78 Accepts]: Start accepts. Automaton has 47256 states and 244601 transitions. Word has length 25 [2021-10-07 15:52:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:39,398 INFO L470 AbstractCegarLoop]: Abstraction has 47256 states and 244601 transitions. [2021-10-07 15:52:39,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 47256 states and 244601 transitions. [2021-10-07 15:52:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:52:39,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:39,583 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:39,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:39,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:39,784 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash -716436104, now seen corresponding path program 104 times [2021-10-07 15:52:39,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:39,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368758887] [2021-10-07 15:52:39,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:52:39,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:39,787 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:39,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-10-07 15:52:41,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:52:41,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:41,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:52:41,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:41,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:42,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:42,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368758887] [2021-10-07 15:52:42,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368758887] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:42,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:42,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:52:42,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110459604] [2021-10-07 15:52:42,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:52:42,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:52:42,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:42,392 INFO L87 Difference]: Start difference. First operand 47256 states and 244601 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:49,038 INFO L93 Difference]: Finished difference Result 48134 states and 247841 transitions. [2021-10-07 15:52:49,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:52:49,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:52:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:49,278 INFO L225 Difference]: With dead ends: 48134 [2021-10-07 15:52:49,279 INFO L226 Difference]: Without dead ends: 48114 [2021-10-07 15:52:49,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 541.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48114 states. [2021-10-07 15:52:50,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48114 to 47520. [2021-10-07 15:52:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47520 states, 47519 states have (on average 5.175719186009807) internal successors, (245945), 47519 states have internal predecessors, (245945), 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) [2021-10-07 15:52:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47520 states to 47520 states and 245945 transitions. [2021-10-07 15:52:51,717 INFO L78 Accepts]: Start accepts. Automaton has 47520 states and 245945 transitions. Word has length 25 [2021-10-07 15:52:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:51,718 INFO L470 AbstractCegarLoop]: Abstraction has 47520 states and 245945 transitions. [2021-10-07 15:52:51,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:52:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 47520 states and 245945 transitions. [2021-10-07 15:52:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:52:51,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:51,907 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:51,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Ended with exit code 0 [2021-10-07 15:52:52,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:52,108 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:52,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:52,109 INFO L82 PathProgramCache]: Analyzing trace with hash 377655484, now seen corresponding path program 105 times [2021-10-07 15:52:52,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:52,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936005882] [2021-10-07 15:52:52,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:52:52,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:52,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:52,111 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:52,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-10-07 15:52:53,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:52:53,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:53,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:52:53,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:54,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:54,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:54,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936005882] [2021-10-07 15:52:54,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936005882] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:54,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:54,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:52:54,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16107590] [2021-10-07 15:52:54,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:52:54,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:54,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:52:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:52:54,973 INFO L87 Difference]: Start difference. First operand 47520 states and 245945 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:53:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:04,054 INFO L93 Difference]: Finished difference Result 48414 states and 249030 transitions. [2021-10-07 15:53:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:53:04,055 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:53:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:04,316 INFO L225 Difference]: With dead ends: 48414 [2021-10-07 15:53:04,316 INFO L226 Difference]: Without dead ends: 48400 [2021-10-07 15:53:04,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 692.0ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:53:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48400 states. [2021-10-07 15:53:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48400 to 47682. [2021-10-07 15:53:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47682 states, 47681 states have (on average 5.174681739057486) internal successors, (246734), 47681 states have internal predecessors, (246734), 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) [2021-10-07 15:53:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47682 states to 47682 states and 246734 transitions. [2021-10-07 15:53:06,714 INFO L78 Accepts]: Start accepts. Automaton has 47682 states and 246734 transitions. Word has length 25 [2021-10-07 15:53:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:06,714 INFO L470 AbstractCegarLoop]: Abstraction has 47682 states and 246734 transitions. [2021-10-07 15:53:06,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:53:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 47682 states and 246734 transitions. [2021-10-07 15:53:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:53:06,883 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:06,884 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:06,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:07,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:07,085 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 87624184, now seen corresponding path program 106 times [2021-10-07 15:53:07,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:07,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195797182] [2021-10-07 15:53:07,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:53:07,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:07,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:07,088 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:07,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-10-07 15:53:08,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:53:08,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:08,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:53:08,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:09,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:53:09,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:09,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195797182] [2021-10-07 15:53:09,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195797182] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:09,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:09,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:53:09,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490836476] [2021-10-07 15:53:09,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:53:09,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:53:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:09,940 INFO L87 Difference]: Start difference. First operand 47682 states and 246734 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:12,464 INFO L93 Difference]: Finished difference Result 48930 states and 251610 transitions. [2021-10-07 15:53:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:53:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:53:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:12,746 INFO L225 Difference]: With dead ends: 48930 [2021-10-07 15:53:12,746 INFO L226 Difference]: Without dead ends: 48904 [2021-10-07 15:53:12,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 862.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48904 states. [2021-10-07 15:53:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48904 to 47930. [2021-10-07 15:53:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47930 states, 47929 states have (on average 5.181205533184502) internal successors, (248330), 47929 states have internal predecessors, (248330), 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) [2021-10-07 15:53:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47930 states to 47930 states and 248330 transitions. [2021-10-07 15:53:15,269 INFO L78 Accepts]: Start accepts. Automaton has 47930 states and 248330 transitions. Word has length 25 [2021-10-07 15:53:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:15,270 INFO L470 AbstractCegarLoop]: Abstraction has 47930 states and 248330 transitions. [2021-10-07 15:53:15,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 47930 states and 248330 transitions. [2021-10-07 15:53:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:53:15,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:15,419 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:15,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Ended with exit code 0 [2021-10-07 15:53:15,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:15,620 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash 10736806, now seen corresponding path program 107 times [2021-10-07 15:53:15,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:15,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278767673] [2021-10-07 15:53:15,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:53:15,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:15,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:15,623 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:15,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-10-07 15:53:17,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:53:17,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:17,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:53:17,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:18,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:18,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:18,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278767673] [2021-10-07 15:53:18,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278767673] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:18,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:18,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:53:18,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650560800] [2021-10-07 15:53:18,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:53:18,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:53:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:18,574 INFO L87 Difference]: Start difference. First operand 47930 states and 248330 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:20,392 INFO L93 Difference]: Finished difference Result 49070 states and 252767 transitions. [2021-10-07 15:53:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:53:20,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:53:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:20,674 INFO L225 Difference]: With dead ends: 49070 [2021-10-07 15:53:20,675 INFO L226 Difference]: Without dead ends: 49050 [2021-10-07 15:53:20,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 566.3ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49050 states. [2021-10-07 15:53:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49050 to 48282. [2021-10-07 15:53:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48282 states, 48281 states have (on average 5.183156935440443) internal successors, (250248), 48281 states have internal predecessors, (250248), 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) [2021-10-07 15:53:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48282 states to 48282 states and 250248 transitions. [2021-10-07 15:53:23,298 INFO L78 Accepts]: Start accepts. Automaton has 48282 states and 250248 transitions. Word has length 25 [2021-10-07 15:53:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:23,298 INFO L470 AbstractCegarLoop]: Abstraction has 48282 states and 250248 transitions. [2021-10-07 15:53:23,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 48282 states and 250248 transitions. [2021-10-07 15:53:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:53:23,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:23,464 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:23,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:23,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:23,667 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:23,667 INFO L82 PathProgramCache]: Analyzing trace with hash -398469188, now seen corresponding path program 108 times [2021-10-07 15:53:23,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:23,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108661896] [2021-10-07 15:53:23,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:53:23,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:23,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:23,669 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:23,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-10-07 15:53:25,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:53:25,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:25,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:53:25,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:26,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:27,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:27,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108661896] [2021-10-07 15:53:27,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108661896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:27,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:27,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:53:27,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681639631] [2021-10-07 15:53:27,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:53:27,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:53:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:27,821 INFO L87 Difference]: Start difference. First operand 48282 states and 250248 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:30,440 INFO L93 Difference]: Finished difference Result 49426 states and 254879 transitions. [2021-10-07 15:53:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:53:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:53:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:31,212 INFO L225 Difference]: With dead ends: 49426 [2021-10-07 15:53:31,212 INFO L226 Difference]: Without dead ends: 49412 [2021-10-07 15:53:31,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1464.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49412 states. [2021-10-07 15:53:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49412 to 48698. [2021-10-07 15:53:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48698 states, 48697 states have (on average 5.187116249460953) internal successors, (252597), 48697 states have internal predecessors, (252597), 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) [2021-10-07 15:53:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48698 states to 48698 states and 252597 transitions. [2021-10-07 15:53:34,089 INFO L78 Accepts]: Start accepts. Automaton has 48698 states and 252597 transitions. Word has length 25 [2021-10-07 15:53:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:34,089 INFO L470 AbstractCegarLoop]: Abstraction has 48698 states and 252597 transitions. [2021-10-07 15:53:34,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 48698 states and 252597 transitions. [2021-10-07 15:53:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:53:34,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:34,263 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:34,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Ended with exit code 0 [2021-10-07 15:53:34,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:34,464 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:34,465 INFO L82 PathProgramCache]: Analyzing trace with hash -757347268, now seen corresponding path program 109 times [2021-10-07 15:53:34,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:34,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338063938] [2021-10-07 15:53:34,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:53:34,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:34,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:34,468 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:34,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2021-10-07 15:53:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:53:35,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:53:35,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:36,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:53:37,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:37,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338063938] [2021-10-07 15:53:37,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338063938] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:37,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:37,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:53:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598989097] [2021-10-07 15:53:37,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:53:37,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:53:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:53:37,588 INFO L87 Difference]: Start difference. First operand 48698 states and 252597 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:53:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:40,244 INFO L93 Difference]: Finished difference Result 50766 states and 261008 transitions. [2021-10-07 15:53:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:53:40,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:53:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:40,541 INFO L225 Difference]: With dead ends: 50766 [2021-10-07 15:53:40,541 INFO L226 Difference]: Without dead ends: 50730 [2021-10-07 15:53:40,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1008.1ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:53:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50730 states. [2021-10-07 15:53:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50730 to 49292. [2021-10-07 15:53:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49292 states, 49291 states have (on average 5.192306912012335) internal successors, (255934), 49291 states have internal predecessors, (255934), 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) [2021-10-07 15:53:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49292 states to 49292 states and 255934 transitions. [2021-10-07 15:53:43,265 INFO L78 Accepts]: Start accepts. Automaton has 49292 states and 255934 transitions. Word has length 25 [2021-10-07 15:53:43,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:43,266 INFO L470 AbstractCegarLoop]: Abstraction has 49292 states and 255934 transitions. [2021-10-07 15:53:43,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:53:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 49292 states and 255934 transitions. [2021-10-07 15:53:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:53:43,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:43,422 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:43,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:43,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:43,630 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash -567115986, now seen corresponding path program 110 times [2021-10-07 15:53:43,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:43,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114971740] [2021-10-07 15:53:43,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:53:43,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:43,634 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:43,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2021-10-07 15:53:45,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:53:45,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:45,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:53:45,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:46,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:53:48,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:48,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114971740] [2021-10-07 15:53:48,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114971740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:48,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:48,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:53:48,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601470977] [2021-10-07 15:53:48,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:53:48,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:53:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:48,020 INFO L87 Difference]: Start difference. First operand 49292 states and 255934 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:49,374 INFO L93 Difference]: Finished difference Result 50030 states and 258627 transitions. [2021-10-07 15:53:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:53:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:53:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:50,018 INFO L225 Difference]: With dead ends: 50030 [2021-10-07 15:53:50,019 INFO L226 Difference]: Without dead ends: 50016 [2021-10-07 15:53:50,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1788.0ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:53:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50016 states. [2021-10-07 15:53:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50016 to 49474. [2021-10-07 15:53:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49474 states, 49473 states have (on average 5.192711175792857) internal successors, (256899), 49473 states have internal predecessors, (256899), 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) [2021-10-07 15:53:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49474 states to 49474 states and 256899 transitions. [2021-10-07 15:53:52,330 INFO L78 Accepts]: Start accepts. Automaton has 49474 states and 256899 transitions. Word has length 25 [2021-10-07 15:53:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:52,331 INFO L470 AbstractCegarLoop]: Abstraction has 49474 states and 256899 transitions. [2021-10-07 15:53:52,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:53:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 49474 states and 256899 transitions. [2021-10-07 15:53:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:53:52,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:52,514 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:52,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:52,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:52,720 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:52,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1505580338, now seen corresponding path program 111 times [2021-10-07 15:53:52,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:52,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921702700] [2021-10-07 15:53:52,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:53:52,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:52,724 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:52,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2021-10-07 15:53:54,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:53:54,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:54,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:53:54,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:55,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:53:56,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:56,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921702700] [2021-10-07 15:53:56,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921702700] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:56,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:56,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:53:56,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500997366] [2021-10-07 15:53:56,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:53:56,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:56,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:53:56,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:53:56,159 INFO L87 Difference]: Start difference. First operand 49474 states and 256899 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:54:00,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:00,726 INFO L93 Difference]: Finished difference Result 51786 states and 266010 transitions. [2021-10-07 15:54:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:54:00,727 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:54:00,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:01,132 INFO L225 Difference]: With dead ends: 51786 [2021-10-07 15:54:01,132 INFO L226 Difference]: Without dead ends: 51762 [2021-10-07 15:54:01,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 764.5ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:54:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51762 states. [2021-10-07 15:54:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51762 to 49946. [2021-10-07 15:54:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49946 states, 49945 states have (on average 5.194874361797978) internal successors, (259458), 49945 states have internal predecessors, (259458), 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) [2021-10-07 15:54:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49946 states to 49946 states and 259458 transitions. [2021-10-07 15:54:03,554 INFO L78 Accepts]: Start accepts. Automaton has 49946 states and 259458 transitions. Word has length 25 [2021-10-07 15:54:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:03,555 INFO L470 AbstractCegarLoop]: Abstraction has 49946 states and 259458 transitions. [2021-10-07 15:54:03,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:54:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 49946 states and 259458 transitions. [2021-10-07 15:54:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:54:04,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:04,266 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:04,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:04,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:04,484 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:04,484 INFO L82 PathProgramCache]: Analyzing trace with hash -768608238, now seen corresponding path program 112 times [2021-10-07 15:54:04,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:04,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448181550] [2021-10-07 15:54:04,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:54:04,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:04,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:04,487 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:04,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2021-10-07 15:54:05,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:54:05,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:06,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:06,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:07,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:07,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448181550] [2021-10-07 15:54:07,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448181550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:07,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:07,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:54:07,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530010408] [2021-10-07 15:54:07,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:07,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:07,148 INFO L87 Difference]: Start difference. First operand 49946 states and 259458 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:08,588 INFO L93 Difference]: Finished difference Result 50828 states and 262648 transitions. [2021-10-07 15:54:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:54:08,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:54:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:08,915 INFO L225 Difference]: With dead ends: 50828 [2021-10-07 15:54:08,915 INFO L226 Difference]: Without dead ends: 50814 [2021-10-07 15:54:08,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 634.0ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50814 states. [2021-10-07 15:54:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50814 to 50124. [2021-10-07 15:54:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50124 states, 50123 states have (on average 5.196716078447021) internal successors, (260475), 50123 states have internal predecessors, (260475), 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) [2021-10-07 15:54:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50124 states to 50124 states and 260475 transitions. [2021-10-07 15:54:11,548 INFO L78 Accepts]: Start accepts. Automaton has 50124 states and 260475 transitions. Word has length 25 [2021-10-07 15:54:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:11,548 INFO L470 AbstractCegarLoop]: Abstraction has 50124 states and 260475 transitions. [2021-10-07 15:54:11,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 50124 states and 260475 transitions. [2021-10-07 15:54:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:54:11,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:11,786 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:11,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:11,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:11,987 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:11,988 INFO L82 PathProgramCache]: Analyzing trace with hash -16788908, now seen corresponding path program 113 times [2021-10-07 15:54:11,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:11,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151530784] [2021-10-07 15:54:11,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:54:11,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:11,990 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:11,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2021-10-07 15:54:13,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:54:13,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:13,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:13,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:14,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:14,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:14,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151530784] [2021-10-07 15:54:14,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151530784] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:14,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:14,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:54:14,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921947889] [2021-10-07 15:54:14,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:14,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:14,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:14,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:14,578 INFO L87 Difference]: Start difference. First operand 50124 states and 260475 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:18,139 INFO L93 Difference]: Finished difference Result 51018 states and 263742 transitions. [2021-10-07 15:54:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:54:18,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:54:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:18,438 INFO L225 Difference]: With dead ends: 51018 [2021-10-07 15:54:18,438 INFO L226 Difference]: Without dead ends: 50998 [2021-10-07 15:54:18,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 570.1ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50998 states. [2021-10-07 15:54:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50998 to 50326. [2021-10-07 15:54:20,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50326 states, 50325 states have (on average 5.197853949329359) internal successors, (261582), 50325 states have internal predecessors, (261582), 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) [2021-10-07 15:54:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50326 states to 50326 states and 261582 transitions. [2021-10-07 15:54:21,023 INFO L78 Accepts]: Start accepts. Automaton has 50326 states and 261582 transitions. Word has length 25 [2021-10-07 15:54:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:21,023 INFO L470 AbstractCegarLoop]: Abstraction has 50326 states and 261582 transitions. [2021-10-07 15:54:21,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 50326 states and 261582 transitions. [2021-10-07 15:54:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:54:21,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:21,192 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:21,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:21,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:21,392 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:21,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1547956134, now seen corresponding path program 114 times [2021-10-07 15:54:21,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:21,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46065795] [2021-10-07 15:54:21,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:54:21,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:21,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:21,396 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:21,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2021-10-07 15:54:23,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:54:23,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:23,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:23,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:24,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:24,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:24,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46065795] [2021-10-07 15:54:24,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46065795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:24,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:24,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:54:24,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937997235] [2021-10-07 15:54:24,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:24,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:24,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:24,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:24,719 INFO L87 Difference]: Start difference. First operand 50326 states and 261582 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:25,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:25,673 INFO L93 Difference]: Finished difference Result 51300 states and 265210 transitions. [2021-10-07 15:54:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:54:25,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:54:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:26,253 INFO L225 Difference]: With dead ends: 51300 [2021-10-07 15:54:26,253 INFO L226 Difference]: Without dead ends: 51280 [2021-10-07 15:54:26,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 616.9ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51280 states. [2021-10-07 15:54:28,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51280 to 50482. [2021-10-07 15:54:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50482 states, 50481 states have (on average 5.2016600305065275) internal successors, (262585), 50481 states have internal predecessors, (262585), 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) [2021-10-07 15:54:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50482 states to 50482 states and 262585 transitions. [2021-10-07 15:54:28,425 INFO L78 Accepts]: Start accepts. Automaton has 50482 states and 262585 transitions. Word has length 25 [2021-10-07 15:54:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:28,425 INFO L470 AbstractCegarLoop]: Abstraction has 50482 states and 262585 transitions. [2021-10-07 15:54:28,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 50482 states and 262585 transitions. [2021-10-07 15:54:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:54:28,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:28,596 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:28,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:28,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:28,802 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:28,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:28,804 INFO L82 PathProgramCache]: Analyzing trace with hash -877765636, now seen corresponding path program 115 times [2021-10-07 15:54:28,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:28,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542648996] [2021-10-07 15:54:28,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:54:28,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:28,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:28,805 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:28,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2021-10-07 15:54:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:54:30,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:30,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:31,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:31,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:31,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542648996] [2021-10-07 15:54:31,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542648996] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:31,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:31,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:54:31,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110049054] [2021-10-07 15:54:31,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:54:31,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:54:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:54:31,971 INFO L87 Difference]: Start difference. First operand 50482 states and 262585 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:54:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:40,248 INFO L93 Difference]: Finished difference Result 51538 states and 266693 transitions. [2021-10-07 15:54:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:54:40,250 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:54:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:40,607 INFO L225 Difference]: With dead ends: 51538 [2021-10-07 15:54:40,607 INFO L226 Difference]: Without dead ends: 51518 [2021-10-07 15:54:40,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 622.7ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:54:40,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51518 states. [2021-10-07 15:54:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51518 to 50842. [2021-10-07 15:54:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50842 states, 50841 states have (on average 5.202926771700006) internal successors, (264522), 50841 states have internal predecessors, (264522), 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) [2021-10-07 15:54:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50842 states to 50842 states and 264522 transitions. [2021-10-07 15:54:42,884 INFO L78 Accepts]: Start accepts. Automaton has 50842 states and 264522 transitions. Word has length 25 [2021-10-07 15:54:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:42,884 INFO L470 AbstractCegarLoop]: Abstraction has 50842 states and 264522 transitions. [2021-10-07 15:54:42,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:54:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 50842 states and 264522 transitions. [2021-10-07 15:54:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:54:43,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:43,635 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:43,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:43,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:43,851 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:43,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1286971630, now seen corresponding path program 116 times [2021-10-07 15:54:43,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:43,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86587005] [2021-10-07 15:54:43,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:54:43,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:43,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:43,854 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:43,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2021-10-07 15:54:45,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:54:45,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:45,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:45,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:46,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:47,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:47,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86587005] [2021-10-07 15:54:47,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86587005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:47,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:47,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:54:47,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517637684] [2021-10-07 15:54:47,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:47,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:47,204 INFO L87 Difference]: Start difference. First operand 50842 states and 264522 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:48,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:48,502 INFO L93 Difference]: Finished difference Result 51700 states and 267902 transitions. [2021-10-07 15:54:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:54:48,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:54:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:48,820 INFO L225 Difference]: With dead ends: 51700 [2021-10-07 15:54:48,820 INFO L226 Difference]: Without dead ends: 51686 [2021-10-07 15:54:48,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1066.8ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51686 states. [2021-10-07 15:54:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51686 to 51106. [2021-10-07 15:54:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51106 states, 51105 states have (on average 5.205322375501419) internal successors, (266018), 51105 states have internal predecessors, (266018), 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) [2021-10-07 15:54:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51106 states to 51106 states and 266018 transitions. [2021-10-07 15:54:51,512 INFO L78 Accepts]: Start accepts. Automaton has 51106 states and 266018 transitions. Word has length 25 [2021-10-07 15:54:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:51,513 INFO L470 AbstractCegarLoop]: Abstraction has 51106 states and 266018 transitions. [2021-10-07 15:54:51,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:54:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 51106 states and 266018 transitions. [2021-10-07 15:54:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:54:51,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:51,758 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:51,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:51,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:51,973 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:51,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:51,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1455618428, now seen corresponding path program 117 times [2021-10-07 15:54:51,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:51,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819901379] [2021-10-07 15:54:51,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:54:51,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:51,976 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:52,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2021-10-07 15:54:54,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:54:54,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:54,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:54,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:57,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:57,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819901379] [2021-10-07 15:54:57,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819901379] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:57,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:57,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:54:57,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014198255] [2021-10-07 15:54:57,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:57,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:57,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:57,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=149, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:54:57,234 INFO L87 Difference]: Start difference. First operand 51106 states and 266018 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:01,569 INFO L93 Difference]: Finished difference Result 52290 states and 271033 transitions. [2021-10-07 15:55:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:55:01,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:55:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:01,966 INFO L225 Difference]: With dead ends: 52290 [2021-10-07 15:55:01,966 INFO L226 Difference]: Without dead ends: 52266 [2021-10-07 15:55:01,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3364.8ms TimeCoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:55:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52266 states. [2021-10-07 15:55:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52266 to 51558. [2021-10-07 15:55:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51558 states, 51557 states have (on average 5.211978974727002) internal successors, (268714), 51557 states have internal predecessors, (268714), 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) [2021-10-07 15:55:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51558 states to 51558 states and 268714 transitions. [2021-10-07 15:55:04,500 INFO L78 Accepts]: Start accepts. Automaton has 51558 states and 268714 transitions. Word has length 25 [2021-10-07 15:55:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:04,500 INFO L470 AbstractCegarLoop]: Abstraction has 51558 states and 268714 transitions. [2021-10-07 15:55:04,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 51558 states and 268714 transitions. [2021-10-07 15:55:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:55:05,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:05,347 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:05,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Ended with exit code 0 [2021-10-07 15:55:05,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:05,561 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:05,561 INFO L82 PathProgramCache]: Analyzing trace with hash -441100144, now seen corresponding path program 118 times [2021-10-07 15:55:05,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:05,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543777996] [2021-10-07 15:55:05,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:55:05,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:05,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:05,564 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:05,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2021-10-07 15:55:07,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:55:07,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:07,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:55:07,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:07,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:10,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:10,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543777996] [2021-10-07 15:55:10,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543777996] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:10,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:10,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:55:10,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130753754] [2021-10-07 15:55:10,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:55:10,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:55:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=175, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:55:10,183 INFO L87 Difference]: Start difference. First operand 51558 states and 268714 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:55:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:18,619 INFO L93 Difference]: Finished difference Result 52998 states and 274369 transitions. [2021-10-07 15:55:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:55:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:55:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:18,970 INFO L225 Difference]: With dead ends: 52998 [2021-10-07 15:55:18,970 INFO L226 Difference]: Without dead ends: 52976 [2021-10-07 15:55:18,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2837.7ms TimeCoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2021-10-07 15:55:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52976 states. [2021-10-07 15:55:21,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52976 to 52090. [2021-10-07 15:55:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52090 states, 52089 states have (on average 5.211464992608804) internal successors, (271460), 52089 states have internal predecessors, (271460), 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) [2021-10-07 15:55:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52090 states to 52090 states and 271460 transitions. [2021-10-07 15:55:21,870 INFO L78 Accepts]: Start accepts. Automaton has 52090 states and 271460 transitions. Word has length 25 [2021-10-07 15:55:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:21,871 INFO L470 AbstractCegarLoop]: Abstraction has 52090 states and 271460 transitions. [2021-10-07 15:55:21,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:55:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 52090 states and 271460 transitions. [2021-10-07 15:55:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:55:22,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:22,058 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:22,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:22,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:22,259 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:22,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1123644898, now seen corresponding path program 119 times [2021-10-07 15:55:22,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:22,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208060680] [2021-10-07 15:55:22,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:55:22,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:22,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:22,262 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:22,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2021-10-07 15:55:23,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:55:23,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:55:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:25,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:25,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:25,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208060680] [2021-10-07 15:55:25,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208060680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:25,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:25,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:55:25,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153940458] [2021-10-07 15:55:25,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:25,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:25,684 INFO L87 Difference]: Start difference. First operand 52090 states and 271460 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:26,903 INFO L93 Difference]: Finished difference Result 53022 states and 275024 transitions. [2021-10-07 15:55:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:55:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:55:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:27,562 INFO L225 Difference]: With dead ends: 53022 [2021-10-07 15:55:27,562 INFO L226 Difference]: Without dead ends: 53008 [2021-10-07 15:55:27,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 716.8ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53008 states. [2021-10-07 15:55:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53008 to 52368. [2021-10-07 15:55:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52368 states, 52367 states have (on average 5.212481142704375) internal successors, (272962), 52367 states have internal predecessors, (272962), 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) [2021-10-07 15:55:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52368 states to 52368 states and 272962 transitions. [2021-10-07 15:55:29,871 INFO L78 Accepts]: Start accepts. Automaton has 52368 states and 272962 transitions. Word has length 25 [2021-10-07 15:55:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:29,871 INFO L470 AbstractCegarLoop]: Abstraction has 52368 states and 272962 transitions. [2021-10-07 15:55:29,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 52368 states and 272962 transitions. [2021-10-07 15:55:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:55:30,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:30,584 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:30,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:30,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:30,797 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:30,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1858005328, now seen corresponding path program 120 times [2021-10-07 15:55:30,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:30,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722946904] [2021-10-07 15:55:30,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:55:30,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:30,801 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:30,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2021-10-07 15:55:32,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:55:32,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:32,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:55:32,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:33,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:34,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:34,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722946904] [2021-10-07 15:55:34,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722946904] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:34,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:34,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:55:34,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151017009] [2021-10-07 15:55:34,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:34,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:34,013 INFO L87 Difference]: Start difference. First operand 52368 states and 272962 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:35,661 INFO L93 Difference]: Finished difference Result 53342 states and 276662 transitions. [2021-10-07 15:55:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:55:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:55:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:36,015 INFO L225 Difference]: With dead ends: 53342 [2021-10-07 15:55:36,016 INFO L226 Difference]: Without dead ends: 53328 [2021-10-07 15:55:36,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 855.7ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53328 states. [2021-10-07 15:55:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53328 to 52672. [2021-10-07 15:55:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52672 states, 52671 states have (on average 5.212128116041085) internal successors, (274528), 52671 states have internal predecessors, (274528), 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) [2021-10-07 15:55:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52672 states to 52672 states and 274528 transitions. [2021-10-07 15:55:38,887 INFO L78 Accepts]: Start accepts. Automaton has 52672 states and 274528 transitions. Word has length 25 [2021-10-07 15:55:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:38,888 INFO L470 AbstractCegarLoop]: Abstraction has 52672 states and 274528 transitions. [2021-10-07 15:55:38,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 52672 states and 274528 transitions. [2021-10-07 15:55:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:55:39,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:39,087 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:39,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:39,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:39,287 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash 701159172, now seen corresponding path program 121 times [2021-10-07 15:55:39,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:39,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362143846] [2021-10-07 15:55:39,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:55:39,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:39,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:39,291 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:39,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2021-10-07 15:55:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:55:40,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:55:40,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:42,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:43,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:43,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362143846] [2021-10-07 15:55:43,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362143846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:43,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:43,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-07 15:55:43,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544315674] [2021-10-07 15:55:43,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:43,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:43,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:43,452 INFO L87 Difference]: Start difference. First operand 52672 states and 274528 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:44,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:44,923 INFO L93 Difference]: Finished difference Result 53788 states and 278943 transitions. [2021-10-07 15:55:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:55:44,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 25 [2021-10-07 15:55:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:45,548 INFO L225 Difference]: With dead ends: 53788 [2021-10-07 15:55:45,549 INFO L226 Difference]: Without dead ends: 53764 [2021-10-07 15:55:45,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1315.0ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53764 states. [2021-10-07 15:55:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53764 to 53026. [2021-10-07 15:55:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53026 states, 53025 states have (on average 5.216086751532296) internal successors, (276583), 53025 states have internal predecessors, (276583), 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) [2021-10-07 15:55:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53026 states to 53026 states and 276583 transitions. [2021-10-07 15:55:48,022 INFO L78 Accepts]: Start accepts. Automaton has 53026 states and 276583 transitions. Word has length 25 [2021-10-07 15:55:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:48,023 INFO L470 AbstractCegarLoop]: Abstraction has 53026 states and 276583 transitions. [2021-10-07 15:55:48,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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) [2021-10-07 15:55:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 53026 states and 276583 transitions. [2021-10-07 15:55:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:55:48,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:48,851 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:48,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:49,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:49,065 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:49,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1667774046, now seen corresponding path program 122 times [2021-10-07 15:55:49,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:49,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000929295] [2021-10-07 15:55:49,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:55:49,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:49,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:49,068 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:49,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Waiting until timeout for monitored process [2021-10-07 15:55:50,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:55:50,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:50,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:55:50,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:51,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:52,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:52,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000929295] [2021-10-07 15:55:52,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000929295] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:52,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:52,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 15:55:52,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11763421] [2021-10-07 15:55:52,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:55:52,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:52,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:55:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:55:52,682 INFO L87 Difference]: Start difference. First operand 53026 states and 276583 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:55:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:56,454 INFO L93 Difference]: Finished difference Result 54284 states and 281272 transitions. [2021-10-07 15:55:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:55:56,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 25 [2021-10-07 15:55:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:56,784 INFO L225 Difference]: With dead ends: 54284 [2021-10-07 15:55:56,785 INFO L226 Difference]: Without dead ends: 54270 [2021-10-07 15:55:56,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1294.7ms TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:55:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54270 states. [2021-10-07 15:55:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54270 to 52978. [2021-10-07 15:55:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52978 states, 52977 states have (on average 5.214961209581516) internal successors, (276273), 52977 states have internal predecessors, (276273), 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) [2021-10-07 15:55:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52978 states to 52978 states and 276273 transitions. [2021-10-07 15:55:59,833 INFO L78 Accepts]: Start accepts. Automaton has 52978 states and 276273 transitions. Word has length 25 [2021-10-07 15:55:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:59,833 INFO L470 AbstractCegarLoop]: Abstraction has 52978 states and 276273 transitions. [2021-10-07 15:55:59,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-10-07 15:55:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand 52978 states and 276273 transitions. [2021-10-07 15:56:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:56:00,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:00,025 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:56:00,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:00,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:00,226 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:00,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:00,227 INFO L82 PathProgramCache]: Analyzing trace with hash -471824523, now seen corresponding path program 123 times [2021-10-07 15:56:00,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:00,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654862766] [2021-10-07 15:56:00,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:56:00,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:00,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:00,229 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:00,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2021-10-07 15:56:02,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:56:02,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:02,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:56:02,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:56:02,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:02,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:02,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654862766] [2021-10-07 15:56:02,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654862766] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:02,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:02,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2021-10-07 15:56:02,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813268016] [2021-10-07 15:56:02,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:56:02,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:56:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:56:02,908 INFO L87 Difference]: Start difference. First operand 52978 states and 276273 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-10-07 15:56:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:06,840 INFO L93 Difference]: Finished difference Result 59222 states and 301040 transitions. [2021-10-07 15:56:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-07 15:56:06,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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 26 [2021-10-07 15:56:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:07,174 INFO L225 Difference]: With dead ends: 59222 [2021-10-07 15:56:07,174 INFO L226 Difference]: Without dead ends: 58306 [2021-10-07 15:56:07,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 2018.0ms TimeCoverageRelationStatistics Valid=635, Invalid=2905, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 15:56:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58306 states. Received shutdown request... [2021-10-07 15:56:07,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:56:07,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Ended with exit code 0 [2021-10-07 15:56:07,960 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:56:07,960 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 [2021-10-07 15:56:08,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:08,122 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-07 15:56:08,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:56:08,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:56:08,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:56:08,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:56:08,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:56:08,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:56:08,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:56:08,131 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:56:08,131 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:56:08,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:56:08 BasicIcfg [2021-10-07 15:56:08,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:56:08,134 INFO L168 Benchmark]: Toolchain (without parser) took 725658.08 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 126.3 MB in the beginning and 4.4 GB in the end (delta: -4.3 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-10-07 15:56:08,134 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:56:08,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.56 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:56:08,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:56:08,135 INFO L168 Benchmark]: Boogie Preprocessor took 34.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:56:08,135 INFO L168 Benchmark]: RCFGBuilder took 635.97 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 132.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2021-10-07 15:56:08,136 INFO L168 Benchmark]: TraceAbstraction took 724473.38 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 131.7 MB in the beginning and 4.4 GB in the end (delta: -4.3 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-10-07 15:56:08,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.56 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 635.97 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 132.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 724473.38 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 131.7 MB in the beginning and 4.4 GB in the end (delta: -4.3 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9512.2ms, 120 PlacesBefore, 46 PlacesAfterwards, 117 TransitionsBefore, 39 TransitionsAfterwards, 1680 CoEnabledTransitionPairs, 6 FixpointIterations, 59 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 108 TotalNumberOfCompositions, 1782 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1782, positive: 1782, positive conditional: 0, positive unconditional: 1782, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1036, positive: 1036, positive conditional: 0, positive unconditional: 1036, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1036, positive: 1036, positive conditional: 0, positive unconditional: 1036, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1782, positive: 746, positive conditional: 0, positive unconditional: 746, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1036, unknown conditional: 0, unknown unconditional: 1036] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 81]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 141 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 724318.7ms, OverallIterations: 141, TraceHistogramMax: 3, EmptinessCheckTime: 15608.6ms, AutomataDifference: 292246.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9587.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10572 SDtfs, 17150 SDslu, 62287 SDs, 0 SdLazy, 38376 SolverSat, 1889 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 166933.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7679 GetRequests, 5273 SyntacticMatches, 9 SemanticMatches, 2397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11803 ImplicationChecksByTransitivity, 114845.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=53026occurred in iteration=139, InterpolantAutomatonStates: 2339, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 142350.4ms AutomataMinimizationTime, 141 MinimizatonAttempts, 237102 StatesRemovedByMinimization, 131 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1172.9ms SsaConstructionTime, 22392.1ms SatisfiabilityAnalysisTime, 119327.0ms InterpolantComputationTime, 3198 NumberOfCodeBlocks, 3144 NumberOfCodeBlocksAsserted, 280 NumberOfCheckSat, 6114 ConstructedInterpolants, 422 QuantifiedInterpolants, 39065 SizeOfPredicates, 500 NumberOfNonLiveVariables, 13669 ConjunctsInSsa, 1265 ConjunctsInUnsatCore, 282 InterpolantComputations, 26 PerfectInterpolantSequences, 410/1724 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