/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/test/easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:57:37,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:57:37,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:57:37,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:57:37,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:57:38,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:57:38,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:57:38,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:57:38,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:57:38,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:57:38,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:57:38,028 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:57:38,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:57:38,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:57:38,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:57:38,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:57:38,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:57:38,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:57:38,031 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:57:38,031 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:57:38,032 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:57:38,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:57:38,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:57:38,032 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:57:38,032 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:57:38,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:57:38,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:57:38,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:57:38,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:57:38,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:57:38,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:57:38,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:57:38,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:57:38,034 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:57:38,034 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:57:38,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:57:38,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:57:38,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:57:38,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:57:38,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:57:38,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:57:38,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:57:38,531 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:57:38,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test/easy10.wvr.c [2021-10-06 20:57:38,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f10493e/ccfb205f170f4bd6b14ca265d526d356/FLAG962fdd69a [2021-10-06 20:57:39,218 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:57:39,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy10.wvr.c [2021-10-06 20:57:39,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f10493e/ccfb205f170f4bd6b14ca265d526d356/FLAG962fdd69a [2021-10-06 20:57:39,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f10493e/ccfb205f170f4bd6b14ca265d526d356 [2021-10-06 20:57:39,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:57:39,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:57:39,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:57:39,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:57:39,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:57:39,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dde6869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39, skipping insertion in model container [2021-10-06 20:57:39,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:57:39,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:57:39,816 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/test/easy10.wvr.c[2476,2489] [2021-10-06 20:57:39,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:57:39,837 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:57:39,871 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/test/easy10.wvr.c[2476,2489] [2021-10-06 20:57:39,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:57:39,893 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:57:39,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39 WrapperNode [2021-10-06 20:57:39,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:57:39,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:57:39,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:57:39,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:57:39,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:57:39,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:57:39,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:57:39,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:57:39,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:39,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:57:39,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:57:39,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:57:39,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:57:39,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (1/1) ... [2021-10-06 20:57:40,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:57:40,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:57:40,038 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) [2021-10-06 20:57:40,065 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 [2021-10-06 20:57:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:57:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:57:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:57:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:57:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 20:57:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 20:57:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:57:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 20:57:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 20:57:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:57:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:57:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:57:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:57:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:57:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:57:40,125 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:57:40,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:57:40,667 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-06 20:57:40,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:57:40 BoogieIcfgContainer [2021-10-06 20:57:40,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:57:40,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:57:40,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:57:40,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:57:40,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:57:39" (1/3) ... [2021-10-06 20:57:40,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b39d50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:57:40, skipping insertion in model container [2021-10-06 20:57:40,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:39" (2/3) ... [2021-10-06 20:57:40,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b39d50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:57:40, skipping insertion in model container [2021-10-06 20:57:40,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:57:40" (3/3) ... [2021-10-06 20:57:40,684 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.c [2021-10-06 20:57:40,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:57:40,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-06 20:57:40,693 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:57:40,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,759 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,759 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,760 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,760 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,761 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,761 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,762 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,762 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,762 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,762 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,763 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,764 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,764 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,764 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,764 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,764 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,765 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,765 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,765 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,766 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,766 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,767 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,767 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,767 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,767 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,768 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,768 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,768 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,768 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,769 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,769 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,769 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,769 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,773 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,780 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,780 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,780 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,781 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,787 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,787 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,788 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,788 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:40,799 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-06 20:57:40,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:57:40,870 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 [2021-10-06 20:57:40,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-06 20:57:40,891 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:57:40,904 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 163 transitions, 358 flow [2021-10-06 20:57:40,908 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 163 transitions, 358 flow [2021-10-06 20:57:40,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 163 transitions, 358 flow [2021-10-06 20:57:41,000 INFO L129 PetriNetUnfolder]: 6/159 cut-off events. [2021-10-06 20:57:41,000 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-06 20:57:41,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 159 events. 6/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 179 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2021-10-06 20:57:41,017 INFO L116 LiptonReduction]: Number of co-enabled transitions 4080 [2021-10-06 20:58:03,295 INFO L131 LiptonReduction]: Checked pairs total: 17877 [2021-10-06 20:58:03,296 INFO L133 LiptonReduction]: Total number of compositions: 146 [2021-10-06 20:58:03,306 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 65 transitions, 162 flow [2021-10-06 20:58:04,124 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12803 states, 12785 states have (on average 4.262651544779038) internal successors, (54498), 12802 states have internal predecessors, (54498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:04,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 12803 states, 12785 states have (on average 4.262651544779038) internal successors, (54498), 12802 states have internal predecessors, (54498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:58:04,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:04,234 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:58:04,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:04,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:04,242 INFO L82 PathProgramCache]: Analyzing trace with hash 578, now seen corresponding path program 1 times [2021-10-06 20:58:04,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:04,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191340202] [2021-10-06 20:58:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:04,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:04,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:04,261 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) [2021-10-06 20:58:04,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 20:58:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:04,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:58:04,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:04,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:04,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:04,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191340202] [2021-10-06 20:58:04,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191340202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:04,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:04,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:58:04,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54301882] [2021-10-06 20:58:04,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:58:04,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:58:04,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:58:04,437 INFO L87 Difference]: Start difference. First operand has 12803 states, 12785 states have (on average 4.262651544779038) internal successors, (54498), 12802 states have internal predecessors, (54498), 0 states have call successors, (0), 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) [2021-10-06 20:58:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:04,777 INFO L93 Difference]: Finished difference Result 12800 states and 51103 transitions. [2021-10-06 20:58:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:58:04,779 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 [2021-10-06 20:58:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:05,092 INFO L225 Difference]: With dead ends: 12800 [2021-10-06 20:58:05,093 INFO L226 Difference]: Without dead ends: 12800 [2021-10-06 20:58:05,101 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 [2021-10-06 20:58:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12800 states. [2021-10-06 20:58:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12800 to 12800. [2021-10-06 20:58:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12800 states, 12785 states have (on average 3.9971059835745013) internal successors, (51103), 12799 states have internal predecessors, (51103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12800 states to 12800 states and 51103 transitions. [2021-10-06 20:58:06,305 INFO L78 Accepts]: Start accepts. Automaton has 12800 states and 51103 transitions. Word has length 1 [2021-10-06 20:58:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:06,306 INFO L470 AbstractCegarLoop]: Abstraction has 12800 states and 51103 transitions. [2021-10-06 20:58:06,306 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) [2021-10-06 20:58:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 12800 states and 51103 transitions. [2021-10-06 20:58:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:58:06,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:06,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:58:06,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:06,511 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 [2021-10-06 20:58:06,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 570072, now seen corresponding path program 1 times [2021-10-06 20:58:06,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:06,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351619498] [2021-10-06 20:58:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:06,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:06,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:06,523 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) [2021-10-06 20:58:06,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 20:58:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:06,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:58:06,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:06,919 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 20:58:06,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 42 [2021-10-06 20:58:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:07,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:07,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:07,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351619498] [2021-10-06 20:58:07,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351619498] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:07,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:07,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:07,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927336328] [2021-10-06 20:58:07,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:07,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:07,182 INFO L87 Difference]: Start difference. First operand 12800 states and 51103 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) [2021-10-06 20:58:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:07,483 INFO L93 Difference]: Finished difference Result 12450 states and 49865 transitions. [2021-10-06 20:58:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:07,484 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 [2021-10-06 20:58:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:07,607 INFO L225 Difference]: With dead ends: 12450 [2021-10-06 20:58:07,608 INFO L226 Difference]: Without dead ends: 12450 [2021-10-06 20:58:07,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:07,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12450 states. [2021-10-06 20:58:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12450 to 12450. [2021-10-06 20:58:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12450 states, 12437 states have (on average 4.009407413363351) internal successors, (49865), 12449 states have internal predecessors, (49865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12450 states to 12450 states and 49865 transitions. [2021-10-06 20:58:08,691 INFO L78 Accepts]: Start accepts. Automaton has 12450 states and 49865 transitions. Word has length 3 [2021-10-06 20:58:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:08,694 INFO L470 AbstractCegarLoop]: Abstraction has 12450 states and 49865 transitions. [2021-10-06 20:58:08,694 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) [2021-10-06 20:58:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 12450 states and 49865 transitions. [2021-10-06 20:58:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:58:08,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:08,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:58:08,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-06 20:58:08,906 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 [2021-10-06 20:58:08,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:08,910 INFO L82 PathProgramCache]: Analyzing trace with hash 570073, now seen corresponding path program 1 times [2021-10-06 20:58:08,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:08,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878028060] [2021-10-06 20:58:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:08,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:08,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:08,913 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) [2021-10-06 20:58:08,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 20:58:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:08,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:58:08,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:09,231 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 20:58:09,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 72 [2021-10-06 20:58:09,242 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 74 treesize of output 72 [2021-10-06 20:58:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:09,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878028060] [2021-10-06 20:58:09,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878028060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:09,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:09,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:09,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397518115] [2021-10-06 20:58:09,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:09,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:09,609 INFO L87 Difference]: Start difference. First operand 12450 states and 49865 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) [2021-10-06 20:58:09,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:09,828 INFO L93 Difference]: Finished difference Result 12100 states and 48627 transitions. [2021-10-06 20:58:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:09,830 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 [2021-10-06 20:58:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:09,924 INFO L225 Difference]: With dead ends: 12100 [2021-10-06 20:58:09,924 INFO L226 Difference]: Without dead ends: 12100 [2021-10-06 20:58:09,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12100 states. [2021-10-06 20:58:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12100 to 12100. [2021-10-06 20:58:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12100 states, 12089 states have (on average 4.0224170733724876) internal successors, (48627), 12099 states have internal predecessors, (48627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12100 states to 12100 states and 48627 transitions. [2021-10-06 20:58:10,659 INFO L78 Accepts]: Start accepts. Automaton has 12100 states and 48627 transitions. Word has length 3 [2021-10-06 20:58:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:10,659 INFO L470 AbstractCegarLoop]: Abstraction has 12100 states and 48627 transitions. [2021-10-06 20:58:10,660 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) [2021-10-06 20:58:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12100 states and 48627 transitions. [2021-10-06 20:58:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:58:10,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:10,661 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:58:10,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:10,873 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 [2021-10-06 20:58:10,874 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:10,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:10,874 INFO L82 PathProgramCache]: Analyzing trace with hash 547853943, now seen corresponding path program 1 times [2021-10-06 20:58:10,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:10,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163781280] [2021-10-06 20:58:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:10,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:10,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:10,877 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) [2021-10-06 20:58:10,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 20:58:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:10,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:58:10,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:11,011 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 20:58:11,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 49 [2021-10-06 20:58:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:11,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:11,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:11,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163781280] [2021-10-06 20:58:11,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163781280] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:11,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:11,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:11,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628520965] [2021-10-06 20:58:11,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:11,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:11,421 INFO L87 Difference]: Start difference. First operand 12100 states and 48627 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) [2021-10-06 20:58:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:11,795 INFO L93 Difference]: Finished difference Result 12002 states and 48361 transitions. [2021-10-06 20:58:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:11,797 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 [2021-10-06 20:58:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:11,898 INFO L225 Difference]: With dead ends: 12002 [2021-10-06 20:58:11,899 INFO L226 Difference]: Without dead ends: 12002 [2021-10-06 20:58:11,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2021-10-06 20:58:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 12002. [2021-10-06 20:58:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12002 states, 11993 states have (on average 4.032435587425998) internal successors, (48361), 12001 states have internal predecessors, (48361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12002 states to 12002 states and 48361 transitions. [2021-10-06 20:58:12,627 INFO L78 Accepts]: Start accepts. Automaton has 12002 states and 48361 transitions. Word has length 5 [2021-10-06 20:58:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:12,628 INFO L470 AbstractCegarLoop]: Abstraction has 12002 states and 48361 transitions. [2021-10-06 20:58:12,628 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) [2021-10-06 20:58:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 12002 states and 48361 transitions. [2021-10-06 20:58:12,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:58:12,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:12,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:58:12,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-06 20:58:12,843 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 [2021-10-06 20:58:12,844 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:12,845 INFO L82 PathProgramCache]: Analyzing trace with hash 547853945, now seen corresponding path program 1 times [2021-10-06 20:58:12,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:12,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176989217] [2021-10-06 20:58:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:12,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:12,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:12,849 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) [2021-10-06 20:58:12,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 20:58:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:12,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:58:12,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:13,148 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 20:58:13,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 78 [2021-10-06 20:58:13,156 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 81 treesize of output 79 [2021-10-06 20:58:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:13,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:13,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:13,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176989217] [2021-10-06 20:58:13,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176989217] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:13,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:13,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:13,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621287944] [2021-10-06 20:58:13,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:13,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:13,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:13,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:13,671 INFO L87 Difference]: Start difference. First operand 12002 states and 48361 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) [2021-10-06 20:58:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:13,991 INFO L93 Difference]: Finished difference Result 11904 states and 48095 transitions. [2021-10-06 20:58:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:13,992 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 [2021-10-06 20:58:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:14,092 INFO L225 Difference]: With dead ends: 11904 [2021-10-06 20:58:14,092 INFO L226 Difference]: Without dead ends: 11904 [2021-10-06 20:58:14,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:14,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11904 states. [2021-10-06 20:58:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11904 to 11904. [2021-10-06 20:58:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 11897 states have (on average 4.042615785492141) internal successors, (48095), 11903 states have internal predecessors, (48095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 48095 transitions. [2021-10-06 20:58:14,760 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 48095 transitions. Word has length 5 [2021-10-06 20:58:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:14,760 INFO L470 AbstractCegarLoop]: Abstraction has 11904 states and 48095 transitions. [2021-10-06 20:58:14,760 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) [2021-10-06 20:58:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 48095 transitions. [2021-10-06 20:58:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 20:58:14,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:14,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:14,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:14,978 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 [2021-10-06 20:58:14,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1793324463, now seen corresponding path program 1 times [2021-10-06 20:58:14,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:14,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61414874] [2021-10-06 20:58:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:14,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:14,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:14,983 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) [2021-10-06 20:58:14,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 20:58:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:15,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:58:15,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:15,141 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 20:58:15,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-06 20:58:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:15,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:15,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:15,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61414874] [2021-10-06 20:58:15,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61414874] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:15,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:15,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:58:15,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511816725] [2021-10-06 20:58:15,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:58:15,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:58:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:58:15,223 INFO L87 Difference]: Start difference. First operand 11904 states and 48095 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:15,388 INFO L93 Difference]: Finished difference Result 11554 states and 46857 transitions. [2021-10-06 20:58:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 20:58:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:15,465 INFO L225 Difference]: With dead ends: 11554 [2021-10-06 20:58:15,466 INFO L226 Difference]: Without dead ends: 11554 [2021-10-06 20:58:15,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:58:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11554 states. [2021-10-06 20:58:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 11554. [2021-10-06 20:58:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11554 states, 11549 states have (on average 4.057234392588103) internal successors, (46857), 11553 states have internal predecessors, (46857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11554 states to 11554 states and 46857 transitions. [2021-10-06 20:58:16,221 INFO L78 Accepts]: Start accepts. Automaton has 11554 states and 46857 transitions. Word has length 7 [2021-10-06 20:58:16,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:16,225 INFO L470 AbstractCegarLoop]: Abstraction has 11554 states and 46857 transitions. [2021-10-06 20:58:16,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 11554 states and 46857 transitions. [2021-10-06 20:58:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 20:58:16,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:16,228 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:16,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:16,443 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 [2021-10-06 20:58:16,444 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:16,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1793324462, now seen corresponding path program 1 times [2021-10-06 20:58:16,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:16,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505564560] [2021-10-06 20:58:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:16,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:16,448 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) [2021-10-06 20:58:16,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 20:58:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:16,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:58:16,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:16,754 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 20:58:16,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-06 20:58:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:16,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:17,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:17,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505564560] [2021-10-06 20:58:17,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505564560] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:17,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:17,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:17,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135966689] [2021-10-06 20:58:17,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:17,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:17,163 INFO L87 Difference]: Start difference. First operand 11554 states and 46857 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) [2021-10-06 20:58:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:17,293 INFO L93 Difference]: Finished difference Result 11204 states and 45619 transitions. [2021-10-06 20:58:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:17,293 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 [2021-10-06 20:58:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:17,354 INFO L225 Difference]: With dead ends: 11204 [2021-10-06 20:58:17,354 INFO L226 Difference]: Without dead ends: 11204 [2021-10-06 20:58:17,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:17,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2021-10-06 20:58:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 11204. [2021-10-06 20:58:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11204 states, 11201 states have (on average 4.072761360592804) internal successors, (45619), 11203 states have internal predecessors, (45619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11204 states to 11204 states and 45619 transitions. [2021-10-06 20:58:17,964 INFO L78 Accepts]: Start accepts. Automaton has 11204 states and 45619 transitions. Word has length 7 [2021-10-06 20:58:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:17,965 INFO L470 AbstractCegarLoop]: Abstraction has 11204 states and 45619 transitions. [2021-10-06 20:58:17,965 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) [2021-10-06 20:58:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 11204 states and 45619 transitions. [2021-10-06 20:58:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 20:58:17,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:17,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:17,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-06 20:58:18,181 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 [2021-10-06 20:58:18,181 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1102911345, now seen corresponding path program 1 times [2021-10-06 20:58:18,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:18,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338186825] [2021-10-06 20:58:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:18,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:18,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:18,184 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) [2021-10-06 20:58:18,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 20:58:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:18,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:58:18,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:18,348 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 20:58:18,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-06 20:58:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:18,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:18,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:18,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338186825] [2021-10-06 20:58:18,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338186825] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:18,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:18,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 20:58:18,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298867290] [2021-10-06 20:58:18,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:58:18,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:58:18,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:58:18,550 INFO L87 Difference]: Start difference. First operand 11204 states and 45619 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-10-06 20:58:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:18,677 INFO L93 Difference]: Finished difference Result 8803 states and 34986 transitions. [2021-10-06 20:58:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:18,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 9 [2021-10-06 20:58:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:18,723 INFO L225 Difference]: With dead ends: 8803 [2021-10-06 20:58:18,723 INFO L226 Difference]: Without dead ends: 8803 [2021-10-06 20:58:18,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:58:18,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8803 states. [2021-10-06 20:58:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8803 to 8803. [2021-10-06 20:58:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8803 states, 8801 states have (on average 3.975230087490058) internal successors, (34986), 8802 states have internal predecessors, (34986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8803 states to 8803 states and 34986 transitions. [2021-10-06 20:58:19,223 INFO L78 Accepts]: Start accepts. Automaton has 8803 states and 34986 transitions. Word has length 9 [2021-10-06 20:58:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:19,223 INFO L470 AbstractCegarLoop]: Abstraction has 8803 states and 34986 transitions. [2021-10-06 20:58:19,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-10-06 20:58:19,224 INFO L276 IsEmpty]: Start isEmpty. Operand 8803 states and 34986 transitions. [2021-10-06 20:58:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 20:58:19,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:19,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:19,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:19,432 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 [2021-10-06 20:58:19,433 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:19,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1102911344, now seen corresponding path program 1 times [2021-10-06 20:58:19,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:19,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589136573] [2021-10-06 20:58:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:19,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:19,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:19,437 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) [2021-10-06 20:58:19,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 20:58:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:19,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 20:58:19,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:19,768 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 20:58:19,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 90 [2021-10-06 20:58:19,779 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 20:58:19,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 90 [2021-10-06 20:58:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:20,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:20,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:20,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589136573] [2021-10-06 20:58:20,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589136573] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:20,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:20,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:20,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647360046] [2021-10-06 20:58:20,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:20,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:20,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:20,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:20,725 INFO L87 Difference]: Start difference. First operand 8803 states and 34986 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:20,941 INFO L93 Difference]: Finished difference Result 6402 states and 24353 transitions. [2021-10-06 20:58:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 20:58:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:20,962 INFO L225 Difference]: With dead ends: 6402 [2021-10-06 20:58:20,962 INFO L226 Difference]: Without dead ends: 6402 [2021-10-06 20:58:20,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:20,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-10-06 20:58:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6402. [2021-10-06 20:58:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6402 states, 6401 states have (on average 3.804561787220747) internal successors, (24353), 6401 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 24353 transitions. [2021-10-06 20:58:21,174 INFO L78 Accepts]: Start accepts. Automaton has 6402 states and 24353 transitions. Word has length 9 [2021-10-06 20:58:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:21,174 INFO L470 AbstractCegarLoop]: Abstraction has 6402 states and 24353 transitions. [2021-10-06 20:58:21,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 6402 states and 24353 transitions. [2021-10-06 20:58:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:21,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:21,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:21,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:21,418 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 [2021-10-06 20:58:21,419 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:21,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1245643989, now seen corresponding path program 1 times [2021-10-06 20:58:21,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:21,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759419916] [2021-10-06 20:58:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:21,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:21,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:21,423 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) [2021-10-06 20:58:21,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 20:58:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:21,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:58:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:21,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:21,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:21,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759419916] [2021-10-06 20:58:21,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759419916] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:21,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:21,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-06 20:58:21,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078015732] [2021-10-06 20:58:21,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:21,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:21,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:21,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:21,739 INFO L87 Difference]: Start difference. First operand 6402 states and 24353 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:21,797 INFO L93 Difference]: Finished difference Result 5876 states and 21737 transitions. [2021-10-06 20:58:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:58:21,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:21,825 INFO L225 Difference]: With dead ends: 5876 [2021-10-06 20:58:21,825 INFO L226 Difference]: Without dead ends: 5076 [2021-10-06 20:58:21,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 20:58:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2021-10-06 20:58:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 5076. [2021-10-06 20:58:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5075 states have (on average 3.7422660098522167) internal successors, (18992), 5075 states have internal predecessors, (18992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 18992 transitions. [2021-10-06 20:58:22,079 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 18992 transitions. Word has length 41 [2021-10-06 20:58:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:22,079 INFO L470 AbstractCegarLoop]: Abstraction has 5076 states and 18992 transitions. [2021-10-06 20:58:22,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 18992 transitions. [2021-10-06 20:58:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:22,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:22,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:22,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:22,312 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 [2021-10-06 20:58:22,312 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:22,313 INFO L82 PathProgramCache]: Analyzing trace with hash -929563199, now seen corresponding path program 2 times [2021-10-06 20:58:22,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:22,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238822231] [2021-10-06 20:58:22,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:22,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:22,315 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) [2021-10-06 20:58:22,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 20:58:22,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:58:22,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:22,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:58:22,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:22,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:22,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:22,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238822231] [2021-10-06 20:58:22,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238822231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:22,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:22,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-06 20:58:22,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43453820] [2021-10-06 20:58:22,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:22,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:22,685 INFO L87 Difference]: Start difference. First operand 5076 states and 18992 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:22,743 INFO L93 Difference]: Finished difference Result 4730 states and 17210 transitions. [2021-10-06 20:58:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:58:22,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:22,764 INFO L225 Difference]: With dead ends: 4730 [2021-10-06 20:58:22,764 INFO L226 Difference]: Without dead ends: 4020 [2021-10-06 20:58:22,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 20:58:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2021-10-06 20:58:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 4020. [2021-10-06 20:58:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 3.680517541677034) internal successors, (14792), 4019 states have internal predecessors, (14792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 14792 transitions. [2021-10-06 20:58:22,898 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 14792 transitions. Word has length 41 [2021-10-06 20:58:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:22,898 INFO L470 AbstractCegarLoop]: Abstraction has 4020 states and 14792 transitions. [2021-10-06 20:58:22,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 14792 transitions. [2021-10-06 20:58:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:22,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:22,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:22,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:23,126 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 [2021-10-06 20:58:23,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1213700491, now seen corresponding path program 3 times [2021-10-06 20:58:23,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:23,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042759160] [2021-10-06 20:58:23,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:23,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:23,131 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) [2021-10-06 20:58:23,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 20:58:23,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 20:58:23,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:23,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:23,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:24,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:25,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:25,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042759160] [2021-10-06 20:58:25,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042759160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:25,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:25,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:25,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604731410] [2021-10-06 20:58:25,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:25,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:25,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:25,355 INFO L87 Difference]: Start difference. First operand 4020 states and 14792 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:26,794 INFO L93 Difference]: Finished difference Result 7855 states and 27189 transitions. [2021-10-06 20:58:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:58:26,795 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:26,831 INFO L225 Difference]: With dead ends: 7855 [2021-10-06 20:58:26,831 INFO L226 Difference]: Without dead ends: 7822 [2021-10-06 20:58:26,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1154.2ms TimeCoverageRelationStatistics Valid=342, Invalid=848, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:58:26,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-10-06 20:58:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 4340. [2021-10-06 20:58:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4339 states have (on average 3.6582161788430514) internal successors, (15873), 4339 states have internal predecessors, (15873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 15873 transitions. [2021-10-06 20:58:27,013 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 15873 transitions. Word has length 41 [2021-10-06 20:58:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:27,014 INFO L470 AbstractCegarLoop]: Abstraction has 4340 states and 15873 transitions. [2021-10-06 20:58:27,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 15873 transitions. [2021-10-06 20:58:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:27,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:27,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:27,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:27,241 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 [2021-10-06 20:58:27,242 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1465497029, now seen corresponding path program 4 times [2021-10-06 20:58:27,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:27,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525968161] [2021-10-06 20:58:27,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:27,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:27,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:27,246 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) [2021-10-06 20:58:27,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 20:58:27,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:27,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:27,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:27,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:28,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:29,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:29,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525968161] [2021-10-06 20:58:29,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525968161] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:29,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:29,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:29,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990886490] [2021-10-06 20:58:29,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:29,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:29,370 INFO L87 Difference]: Start difference. First operand 4340 states and 15873 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:30,581 INFO L93 Difference]: Finished difference Result 7861 states and 27179 transitions. [2021-10-06 20:58:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:58:30,581 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:30,618 INFO L225 Difference]: With dead ends: 7861 [2021-10-06 20:58:30,618 INFO L226 Difference]: Without dead ends: 7844 [2021-10-06 20:58:30,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1007.1ms TimeCoverageRelationStatistics Valid=342, Invalid=848, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:58:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2021-10-06 20:58:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 4346. [2021-10-06 20:58:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 4345 states have (on average 3.6556962025316455) internal successors, (15884), 4345 states have internal predecessors, (15884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 15884 transitions. [2021-10-06 20:58:30,807 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 15884 transitions. Word has length 41 [2021-10-06 20:58:30,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:30,808 INFO L470 AbstractCegarLoop]: Abstraction has 4346 states and 15884 transitions. [2021-10-06 20:58:30,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 15884 transitions. [2021-10-06 20:58:30,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:30,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:30,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:30,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:31,036 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 [2021-10-06 20:58:31,037 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:31,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1627579289, now seen corresponding path program 5 times [2021-10-06 20:58:31,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:31,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85815327] [2021-10-06 20:58:31,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:31,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:31,040 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) [2021-10-06 20:58:31,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 20:58:31,276 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:58:31,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:31,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:31,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:31,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:33,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:33,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85815327] [2021-10-06 20:58:33,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85815327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:33,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:33,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:33,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556376153] [2021-10-06 20:58:33,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:33,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:33,194 INFO L87 Difference]: Start difference. First operand 4346 states and 15884 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:34,654 INFO L93 Difference]: Finished difference Result 7843 states and 27149 transitions. [2021-10-06 20:58:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:58:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:34,691 INFO L225 Difference]: With dead ends: 7843 [2021-10-06 20:58:34,691 INFO L226 Difference]: Without dead ends: 7804 [2021-10-06 20:58:34,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1007.4ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:58:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2021-10-06 20:58:34,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4322. [2021-10-06 20:58:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4321 states have (on average 3.6616523952788707) internal successors, (15822), 4321 states have internal predecessors, (15822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 15822 transitions. [2021-10-06 20:58:34,915 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 15822 transitions. Word has length 41 [2021-10-06 20:58:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:34,918 INFO L470 AbstractCegarLoop]: Abstraction has 4322 states and 15822 transitions. [2021-10-06 20:58:34,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 15822 transitions. [2021-10-06 20:58:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:34,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:34,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:34,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:35,150 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 [2021-10-06 20:58:35,151 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1802952073, now seen corresponding path program 6 times [2021-10-06 20:58:35,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:35,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458835552] [2021-10-06 20:58:35,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:35,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:35,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:35,156 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) [2021-10-06 20:58:35,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 20:58:35,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 20:58:35,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:35,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:35,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:36,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:37,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:37,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458835552] [2021-10-06 20:58:37,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458835552] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:37,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:37,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:37,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098586032] [2021-10-06 20:58:37,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:37,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:37,561 INFO L87 Difference]: Start difference. First operand 4322 states and 15822 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:38,807 INFO L93 Difference]: Finished difference Result 7871 states and 27174 transitions. [2021-10-06 20:58:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:58:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:38,841 INFO L225 Difference]: With dead ends: 7871 [2021-10-06 20:58:38,841 INFO L226 Difference]: Without dead ends: 7854 [2021-10-06 20:58:38,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1062.0ms TimeCoverageRelationStatistics Valid=368, Invalid=892, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 20:58:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7854 states. [2021-10-06 20:58:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7854 to 4340. [2021-10-06 20:58:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4339 states have (on average 3.6568333717446415) internal successors, (15867), 4339 states have internal predecessors, (15867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 15867 transitions. [2021-10-06 20:58:39,015 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 15867 transitions. Word has length 41 [2021-10-06 20:58:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:39,015 INFO L470 AbstractCegarLoop]: Abstraction has 4340 states and 15867 transitions. [2021-10-06 20:58:39,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 15867 transitions. [2021-10-06 20:58:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:39,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:39,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:39,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:39,246 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 [2021-10-06 20:58:39,247 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1640869813, now seen corresponding path program 7 times [2021-10-06 20:58:39,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:39,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383891723] [2021-10-06 20:58:39,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:39,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:39,255 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) [2021-10-06 20:58:39,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 20:58:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:39,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:40,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:41,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:41,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383891723] [2021-10-06 20:58:41,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383891723] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:41,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:41,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:41,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118893947] [2021-10-06 20:58:41,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:41,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:41,751 INFO L87 Difference]: Start difference. First operand 4340 states and 15867 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:42,984 INFO L93 Difference]: Finished difference Result 7853 states and 27144 transitions. [2021-10-06 20:58:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 20:58:42,984 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:42,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:43,007 INFO L225 Difference]: With dead ends: 7853 [2021-10-06 20:58:43,008 INFO L226 Difference]: Without dead ends: 7832 [2021-10-06 20:58:43,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1095.9ms TimeCoverageRelationStatistics Valid=397, Invalid=935, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 20:58:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2021-10-06 20:58:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 4334. [2021-10-06 20:58:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.657973690283868) internal successors, (15850), 4333 states have internal predecessors, (15850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 15850 transitions. [2021-10-06 20:58:43,192 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 15850 transitions. Word has length 41 [2021-10-06 20:58:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:43,192 INFO L470 AbstractCegarLoop]: Abstraction has 4334 states and 15850 transitions. [2021-10-06 20:58:43,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 15850 transitions. [2021-10-06 20:58:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:43,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:43,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:43,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:43,404 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 [2021-10-06 20:58:43,405 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:43,406 INFO L82 PathProgramCache]: Analyzing trace with hash 513874039, now seen corresponding path program 8 times [2021-10-06 20:58:43,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:43,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764738275] [2021-10-06 20:58:43,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:43,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:43,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:43,409 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) [2021-10-06 20:58:43,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 20:58:43,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:58:43,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:43,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:43,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:44,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:46,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:46,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764738275] [2021-10-06 20:58:46,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764738275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:46,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:46,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:46,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872358075] [2021-10-06 20:58:46,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:46,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:46,232 INFO L87 Difference]: Start difference. First operand 4334 states and 15850 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:47,421 INFO L93 Difference]: Finished difference Result 7831 states and 27107 transitions. [2021-10-06 20:58:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:58:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:47,445 INFO L225 Difference]: With dead ends: 7831 [2021-10-06 20:58:47,445 INFO L226 Difference]: Without dead ends: 7710 [2021-10-06 20:58:47,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1092.0ms TimeCoverageRelationStatistics Valid=372, Invalid=888, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 20:58:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2021-10-06 20:58:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 4246. [2021-10-06 20:58:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 4245 states have (on average 3.68150765606596) internal successors, (15628), 4245 states have internal predecessors, (15628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 15628 transitions. [2021-10-06 20:58:47,599 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 15628 transitions. Word has length 41 [2021-10-06 20:58:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:47,599 INFO L470 AbstractCegarLoop]: Abstraction has 4246 states and 15628 transitions. [2021-10-06 20:58:47,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 15628 transitions. [2021-10-06 20:58:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:47,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:47,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:47,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:47,813 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 [2021-10-06 20:58:47,813 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:47,814 INFO L82 PathProgramCache]: Analyzing trace with hash -377899529, now seen corresponding path program 9 times [2021-10-06 20:58:47,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:47,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646234259] [2021-10-06 20:58:47,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:47,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:47,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:47,817 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) [2021-10-06 20:58:47,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 20:58:48,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 20:58:48,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:48,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:48,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:49,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:50,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:50,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646234259] [2021-10-06 20:58:50,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646234259] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:50,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:50,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:50,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628911447] [2021-10-06 20:58:50,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:50,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:50,440 INFO L87 Difference]: Start difference. First operand 4246 states and 15628 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:51,614 INFO L93 Difference]: Finished difference Result 7767 states and 27038 transitions. [2021-10-06 20:58:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:58:51,614 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:51,635 INFO L225 Difference]: With dead ends: 7767 [2021-10-06 20:58:51,635 INFO L226 Difference]: Without dead ends: 7734 [2021-10-06 20:58:51,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1017.1ms TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:58:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2021-10-06 20:58:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 4302. [2021-10-06 20:58:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.675889328063241) internal successors, (15810), 4301 states have internal predecessors, (15810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 15810 transitions. [2021-10-06 20:58:51,794 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 15810 transitions. Word has length 41 [2021-10-06 20:58:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:51,794 INFO L470 AbstractCegarLoop]: Abstraction has 4302 states and 15810 transitions. [2021-10-06 20:58:51,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:51,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 15810 transitions. [2021-10-06 20:58:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:51,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:51,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:51,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:52,015 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 [2021-10-06 20:58:52,016 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:52,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:52,017 INFO L82 PathProgramCache]: Analyzing trace with hash -884871101, now seen corresponding path program 10 times [2021-10-06 20:58:52,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:52,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936619884] [2021-10-06 20:58:52,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:52,018 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:52,020 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) [2021-10-06 20:58:52,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 20:58:52,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:52,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:52,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:52,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:53,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:54,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:54,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936619884] [2021-10-06 20:58:54,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936619884] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:54,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:54,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:54,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974532519] [2021-10-06 20:58:54,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:54,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:54,593 INFO L87 Difference]: Start difference. First operand 4302 states and 15810 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:55,937 INFO L93 Difference]: Finished difference Result 7751 states and 27000 transitions. [2021-10-06 20:58:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:58:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:58:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:55,959 INFO L225 Difference]: With dead ends: 7751 [2021-10-06 20:58:55,960 INFO L226 Difference]: Without dead ends: 7738 [2021-10-06 20:58:55,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 988.0ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:58:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7738 states. [2021-10-06 20:58:56,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7738 to 4306. [2021-10-06 20:58:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4305 states have (on average 3.6740998838559813) internal successors, (15817), 4305 states have internal predecessors, (15817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 15817 transitions. [2021-10-06 20:58:56,101 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 15817 transitions. Word has length 41 [2021-10-06 20:58:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:56,101 INFO L470 AbstractCegarLoop]: Abstraction has 4306 states and 15817 transitions. [2021-10-06 20:58:56,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 15817 transitions. [2021-10-06 20:58:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:58:56,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:56,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:56,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:56,313 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 [2021-10-06 20:58:56,314 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:58:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1822238903, now seen corresponding path program 11 times [2021-10-06 20:58:56,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:56,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147528200] [2021-10-06 20:58:56,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:56,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:56,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:56,319 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) [2021-10-06 20:58:56,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 20:58:56,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:58:56,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:56,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:56,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:57,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:58,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:58,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147528200] [2021-10-06 20:58:58,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147528200] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:58,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:58,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:58:58,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961883281] [2021-10-06 20:58:58,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:58:58,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:58:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:58:58,977 INFO L87 Difference]: Start difference. First operand 4306 states and 15817 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:00,253 INFO L93 Difference]: Finished difference Result 7753 states and 27000 transitions. [2021-10-06 20:59:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:00,273 INFO L225 Difference]: With dead ends: 7753 [2021-10-06 20:59:00,273 INFO L226 Difference]: Without dead ends: 7722 [2021-10-06 20:59:00,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 921.3ms TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7722 states. [2021-10-06 20:59:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7722 to 4290. [2021-10-06 20:59:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.6784798321287013) internal successors, (15777), 4289 states have internal predecessors, (15777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 15777 transitions. [2021-10-06 20:59:00,384 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 15777 transitions. Word has length 41 [2021-10-06 20:59:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:00,385 INFO L470 AbstractCegarLoop]: Abstraction has 4290 states and 15777 transitions. [2021-10-06 20:59:00,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 15777 transitions. [2021-10-06 20:59:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:00,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:00,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:00,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:00,595 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 [2021-10-06 20:59:00,595 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1815539271, now seen corresponding path program 12 times [2021-10-06 20:59:00,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:00,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669861530] [2021-10-06 20:59:00,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:00,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:00,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:00,599 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) [2021-10-06 20:59:00,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 20:59:01,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 20:59:01,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:01,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:01,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:01,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:02,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:02,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669861530] [2021-10-06 20:59:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669861530] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:02,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:02,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:02,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45000433] [2021-10-06 20:59:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:02,921 INFO L87 Difference]: Start difference. First operand 4290 states and 15777 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:04,213 INFO L93 Difference]: Finished difference Result 7803 states and 27096 transitions. [2021-10-06 20:59:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:04,213 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:04,233 INFO L225 Difference]: With dead ends: 7803 [2021-10-06 20:59:04,233 INFO L226 Difference]: Without dead ends: 7770 [2021-10-06 20:59:04,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 999.9ms TimeCoverageRelationStatistics Valid=312, Invalid=878, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7770 states. [2021-10-06 20:59:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7770 to 4308. [2021-10-06 20:59:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4307 states have (on average 3.6707685163687023) internal successors, (15810), 4307 states have internal predecessors, (15810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 15810 transitions. [2021-10-06 20:59:04,345 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 15810 transitions. Word has length 41 [2021-10-06 20:59:04,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:04,345 INFO L470 AbstractCegarLoop]: Abstraction has 4308 states and 15810 transitions. [2021-10-06 20:59:04,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 15810 transitions. [2021-10-06 20:59:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:04,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:04,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:04,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:04,557 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 [2021-10-06 20:59:04,558 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:04,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:04,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1563742733, now seen corresponding path program 13 times [2021-10-06 20:59:04,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:04,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809623927] [2021-10-06 20:59:04,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:04,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:04,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:04,562 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) [2021-10-06 20:59:04,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 20:59:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:05,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:05,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:05,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:06,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:06,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809623927] [2021-10-06 20:59:06,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809623927] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:06,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:06,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:06,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311098473] [2021-10-06 20:59:06,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:06,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:06,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:06,828 INFO L87 Difference]: Start difference. First operand 4308 states and 15810 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:08,099 INFO L93 Difference]: Finished difference Result 7793 states and 27066 transitions. [2021-10-06 20:59:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:08,100 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:08,119 INFO L225 Difference]: With dead ends: 7793 [2021-10-06 20:59:08,120 INFO L226 Difference]: Without dead ends: 7776 [2021-10-06 20:59:08,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 950.7ms TimeCoverageRelationStatistics Valid=318, Invalid=872, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2021-10-06 20:59:08,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 4314. [2021-10-06 20:59:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 4313 states have (on average 3.6682123811731975) internal successors, (15821), 4313 states have internal predecessors, (15821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 15821 transitions. [2021-10-06 20:59:08,230 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 15821 transitions. Word has length 41 [2021-10-06 20:59:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:08,230 INFO L470 AbstractCegarLoop]: Abstraction has 4314 states and 15821 transitions. [2021-10-06 20:59:08,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:08,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 15821 transitions. [2021-10-06 20:59:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:08,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:08,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:08,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:08,442 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 [2021-10-06 20:59:08,442 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:08,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1401660473, now seen corresponding path program 14 times [2021-10-06 20:59:08,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:08,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315363955] [2021-10-06 20:59:08,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:08,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:08,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:08,446 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) [2021-10-06 20:59:08,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 20:59:08,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:59:08,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:08,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:08,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:09,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:10,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:10,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315363955] [2021-10-06 20:59:10,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315363955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:10,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:10,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:10,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336960423] [2021-10-06 20:59:10,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:10,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:10,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:10,836 INFO L87 Difference]: Start difference. First operand 4314 states and 15821 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:11,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:11,995 INFO L93 Difference]: Finished difference Result 7775 states and 27036 transitions. [2021-10-06 20:59:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:11,995 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:12,015 INFO L225 Difference]: With dead ends: 7775 [2021-10-06 20:59:12,015 INFO L226 Difference]: Without dead ends: 7736 [2021-10-06 20:59:12,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 973.6ms TimeCoverageRelationStatistics Valid=314, Invalid=876, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2021-10-06 20:59:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 4290. [2021-10-06 20:59:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.675681977150851) internal successors, (15765), 4289 states have internal predecessors, (15765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 15765 transitions. [2021-10-06 20:59:12,127 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 15765 transitions. Word has length 41 [2021-10-06 20:59:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:12,127 INFO L470 AbstractCegarLoop]: Abstraction has 4290 states and 15765 transitions. [2021-10-06 20:59:12,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:12,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 15765 transitions. [2021-10-06 20:59:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:12,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:12,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:12,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:12,348 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 [2021-10-06 20:59:12,349 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:12,349 INFO L82 PathProgramCache]: Analyzing trace with hash 38437689, now seen corresponding path program 15 times [2021-10-06 20:59:12,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:12,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308070961] [2021-10-06 20:59:12,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:59:12,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:12,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:12,352 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) [2021-10-06 20:59:12,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 20:59:12,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 20:59:12,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:13,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:13,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:13,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:14,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:14,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308070961] [2021-10-06 20:59:14,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308070961] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:14,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:14,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:14,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178699860] [2021-10-06 20:59:14,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:14,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:14,754 INFO L87 Difference]: Start difference. First operand 4290 states and 15765 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:16,023 INFO L93 Difference]: Finished difference Result 7775 states and 27029 transitions. [2021-10-06 20:59:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:59:16,024 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:16,043 INFO L225 Difference]: With dead ends: 7775 [2021-10-06 20:59:16,043 INFO L226 Difference]: Without dead ends: 7762 [2021-10-06 20:59:16,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 967.5ms TimeCoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 20:59:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-10-06 20:59:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 4298. [2021-10-06 20:59:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.6739585757505235) internal successors, (15787), 4297 states have internal predecessors, (15787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 15787 transitions. [2021-10-06 20:59:16,158 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 15787 transitions. Word has length 41 [2021-10-06 20:59:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:16,158 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 15787 transitions. [2021-10-06 20:59:16,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 15787 transitions. [2021-10-06 20:59:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:16,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:16,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:16,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:16,367 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 [2021-10-06 20:59:16,367 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash -99992281, now seen corresponding path program 16 times [2021-10-06 20:59:16,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:16,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122585880] [2021-10-06 20:59:16,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:59:16,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:16,371 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) [2021-10-06 20:59:16,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 20:59:17,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:59:17,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:17,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:17,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:17,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:18,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:18,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122585880] [2021-10-06 20:59:18,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122585880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:18,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:18,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:18,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900996183] [2021-10-06 20:59:18,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:18,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:18,891 INFO L87 Difference]: Start difference. First operand 4298 states and 15787 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:20,113 INFO L93 Difference]: Finished difference Result 7779 states and 27033 transitions. [2021-10-06 20:59:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:59:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:20,141 INFO L225 Difference]: With dead ends: 7779 [2021-10-06 20:59:20,141 INFO L226 Difference]: Without dead ends: 7758 [2021-10-06 20:59:20,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 980.8ms TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 20:59:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2021-10-06 20:59:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 4294. [2021-10-06 20:59:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4293 states have (on average 3.674819473561612) internal successors, (15776), 4293 states have internal predecessors, (15776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 15776 transitions. [2021-10-06 20:59:20,274 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 15776 transitions. Word has length 41 [2021-10-06 20:59:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:20,274 INFO L470 AbstractCegarLoop]: Abstraction has 4294 states and 15776 transitions. [2021-10-06 20:59:20,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 15776 transitions. [2021-10-06 20:59:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:20,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:20,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:20,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:20,482 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 [2021-10-06 20:59:20,483 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:20,484 INFO L82 PathProgramCache]: Analyzing trace with hash -533017117, now seen corresponding path program 17 times [2021-10-06 20:59:20,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:20,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655215834] [2021-10-06 20:59:20,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:59:20,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:20,486 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) [2021-10-06 20:59:20,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 20:59:21,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:59:21,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:21,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:21,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:21,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:23,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:23,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655215834] [2021-10-06 20:59:23,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655215834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:23,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:23,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:23,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998139687] [2021-10-06 20:59:23,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:23,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:23,083 INFO L87 Difference]: Start difference. First operand 4294 states and 15776 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:24,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:24,359 INFO L93 Difference]: Finished difference Result 7783 states and 27027 transitions. [2021-10-06 20:59:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:24,360 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:24,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:24,381 INFO L225 Difference]: With dead ends: 7783 [2021-10-06 20:59:24,381 INFO L226 Difference]: Without dead ends: 7770 [2021-10-06 20:59:24,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 963.8ms TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7770 states. [2021-10-06 20:59:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7770 to 4298. [2021-10-06 20:59:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.6730276937398183) internal successors, (15783), 4297 states have internal predecessors, (15783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 15783 transitions. [2021-10-06 20:59:24,497 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 15783 transitions. Word has length 41 [2021-10-06 20:59:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:24,497 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 15783 transitions. [2021-10-06 20:59:24,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 15783 transitions. [2021-10-06 20:59:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:24,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:24,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:24,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:24,706 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 [2021-10-06 20:59:24,706 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:24,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:24,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1470384919, now seen corresponding path program 18 times [2021-10-06 20:59:24,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:24,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057359836] [2021-10-06 20:59:24,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:24,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:24,710 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) [2021-10-06 20:59:24,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 20:59:25,462 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 20:59:25,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:25,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:25,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:26,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:27,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:27,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057359836] [2021-10-06 20:59:27,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057359836] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:27,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:27,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:27,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368038423] [2021-10-06 20:59:27,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:27,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:27,360 INFO L87 Difference]: Start difference. First operand 4298 states and 15783 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:28,714 INFO L93 Difference]: Finished difference Result 7775 states and 27018 transitions. [2021-10-06 20:59:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:28,715 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:28,742 INFO L225 Difference]: With dead ends: 7775 [2021-10-06 20:59:28,742 INFO L226 Difference]: Without dead ends: 7756 [2021-10-06 20:59:28,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 969.1ms TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:28,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7756 states. [2021-10-06 20:59:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7756 to 4294. [2021-10-06 20:59:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4293 states have (on average 3.6738877242021895) internal successors, (15772), 4293 states have internal predecessors, (15772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 15772 transitions. [2021-10-06 20:59:28,984 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 15772 transitions. Word has length 41 [2021-10-06 20:59:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:28,985 INFO L470 AbstractCegarLoop]: Abstraction has 4294 states and 15772 transitions. [2021-10-06 20:59:28,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:28,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 15772 transitions. [2021-10-06 20:59:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:28,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:28,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:29,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:29,204 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 [2021-10-06 20:59:29,205 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash 906376929, now seen corresponding path program 19 times [2021-10-06 20:59:29,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:29,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7372011] [2021-10-06 20:59:29,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:29,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:29,209 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) [2021-10-06 20:59:29,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 20:59:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:29,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:29,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:30,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:31,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:31,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7372011] [2021-10-06 20:59:31,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7372011] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:31,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:31,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:31,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039389879] [2021-10-06 20:59:31,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:31,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:31,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:31,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:31,579 INFO L87 Difference]: Start difference. First operand 4294 states and 15772 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:32,953 INFO L93 Difference]: Finished difference Result 7779 states and 27028 transitions. [2021-10-06 20:59:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:32,954 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:32,975 INFO L225 Difference]: With dead ends: 7779 [2021-10-06 20:59:32,976 INFO L226 Difference]: Without dead ends: 7762 [2021-10-06 20:59:32,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 933.8ms TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-10-06 20:59:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 4300. [2021-10-06 20:59:33,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.671318911374738) internal successors, (15783), 4299 states have internal predecessors, (15783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 15783 transitions. [2021-10-06 20:59:33,102 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 15783 transitions. Word has length 41 [2021-10-06 20:59:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:33,102 INFO L470 AbstractCegarLoop]: Abstraction has 4300 states and 15783 transitions. [2021-10-06 20:59:33,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 15783 transitions. [2021-10-06 20:59:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:33,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:33,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:33,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:33,358 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 [2021-10-06 20:59:33,359 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash 205422137, now seen corresponding path program 20 times [2021-10-06 20:59:33,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:33,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211793951] [2021-10-06 20:59:33,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:33,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:33,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:33,363 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) [2021-10-06 20:59:33,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 20:59:34,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:59:34,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:34,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:34,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:34,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:35,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:35,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211793951] [2021-10-06 20:59:35,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211793951] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:35,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:35,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:35,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23686949] [2021-10-06 20:59:35,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:35,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:35,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:35,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:35,860 INFO L87 Difference]: Start difference. First operand 4300 states and 15783 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:37,107 INFO L93 Difference]: Finished difference Result 7761 states and 26998 transitions. [2021-10-06 20:59:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:37,108 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:37,131 INFO L225 Difference]: With dead ends: 7761 [2021-10-06 20:59:37,131 INFO L226 Difference]: Without dead ends: 7724 [2021-10-06 20:59:37,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 967.0ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2021-10-06 20:59:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 4278. [2021-10-06 20:59:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.67827916764087) internal successors, (15732), 4277 states have internal predecessors, (15732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 15732 transitions. [2021-10-06 20:59:37,252 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 15732 transitions. Word has length 41 [2021-10-06 20:59:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:37,252 INFO L470 AbstractCegarLoop]: Abstraction has 4278 states and 15732 transitions. [2021-10-06 20:59:37,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 15732 transitions. [2021-10-06 20:59:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:37,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:37,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:37,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:37,462 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 [2021-10-06 20:59:37,463 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:37,464 INFO L82 PathProgramCache]: Analyzing trace with hash 69667979, now seen corresponding path program 21 times [2021-10-06 20:59:37,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:37,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348373370] [2021-10-06 20:59:37,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:59:37,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:37,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:37,467 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) [2021-10-06 20:59:37,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 20:59:38,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 20:59:38,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:38,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:38,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:39,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:40,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:40,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348373370] [2021-10-06 20:59:40,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348373370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:40,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:40,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:40,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241835821] [2021-10-06 20:59:40,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:40,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:40,254 INFO L87 Difference]: Start difference. First operand 4278 states and 15732 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:41,660 INFO L93 Difference]: Finished difference Result 7855 states and 27235 transitions. [2021-10-06 20:59:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:41,661 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:41,681 INFO L225 Difference]: With dead ends: 7855 [2021-10-06 20:59:41,681 INFO L226 Difference]: Without dead ends: 7822 [2021-10-06 20:59:41,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1038.5ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-10-06 20:59:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 4344. [2021-10-06 20:59:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 3.659912502878195) internal successors, (15895), 4343 states have internal predecessors, (15895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 15895 transitions. [2021-10-06 20:59:41,797 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 15895 transitions. Word has length 41 [2021-10-06 20:59:41,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:41,797 INFO L470 AbstractCegarLoop]: Abstraction has 4344 states and 15895 transitions. [2021-10-06 20:59:41,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 15895 transitions. [2021-10-06 20:59:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:41,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:41,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:41,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:42,006 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 [2021-10-06 20:59:42,006 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:42,007 INFO L82 PathProgramCache]: Analyzing trace with hash 321464517, now seen corresponding path program 22 times [2021-10-06 20:59:42,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:42,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500259268] [2021-10-06 20:59:42,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:59:42,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:42,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:42,010 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) [2021-10-06 20:59:42,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 20:59:42,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:59:42,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:42,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:42,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:43,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:44,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:44,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500259268] [2021-10-06 20:59:44,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500259268] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:44,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:44,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:44,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309197366] [2021-10-06 20:59:44,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:44,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:44,824 INFO L87 Difference]: Start difference. First operand 4344 states and 15895 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:46,082 INFO L93 Difference]: Finished difference Result 7861 states and 27225 transitions. [2021-10-06 20:59:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:46,082 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:46,103 INFO L225 Difference]: With dead ends: 7861 [2021-10-06 20:59:46,103 INFO L226 Difference]: Without dead ends: 7844 [2021-10-06 20:59:46,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1009.1ms TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2021-10-06 20:59:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 4350. [2021-10-06 20:59:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4350 states, 4349 states have (on average 3.6573925040239135) internal successors, (15906), 4349 states have internal predecessors, (15906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 15906 transitions. [2021-10-06 20:59:46,218 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 15906 transitions. Word has length 41 [2021-10-06 20:59:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:46,218 INFO L470 AbstractCegarLoop]: Abstraction has 4350 states and 15906 transitions. [2021-10-06 20:59:46,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 15906 transitions. [2021-10-06 20:59:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:46,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:46,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:46,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:46,440 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 [2021-10-06 20:59:46,441 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:46,441 INFO L82 PathProgramCache]: Analyzing trace with hash 483546777, now seen corresponding path program 23 times [2021-10-06 20:59:46,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:46,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771693105] [2021-10-06 20:59:46,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:59:46,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:46,444 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) [2021-10-06 20:59:46,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 20:59:47,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:59:47,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:47,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:47,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:48,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:49,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:49,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771693105] [2021-10-06 20:59:49,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771693105] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:49,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:49,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:49,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530592471] [2021-10-06 20:59:49,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:49,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:49,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:49,232 INFO L87 Difference]: Start difference. First operand 4350 states and 15906 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:50,484 INFO L93 Difference]: Finished difference Result 7843 states and 27195 transitions. [2021-10-06 20:59:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:50,507 INFO L225 Difference]: With dead ends: 7843 [2021-10-06 20:59:50,507 INFO L226 Difference]: Without dead ends: 7804 [2021-10-06 20:59:50,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1004.9ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2021-10-06 20:59:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4326. [2021-10-06 20:59:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.6633526011560695) internal successors, (15844), 4325 states have internal predecessors, (15844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 15844 transitions. [2021-10-06 20:59:50,618 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 15844 transitions. Word has length 41 [2021-10-06 20:59:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:50,618 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 15844 transitions. [2021-10-06 20:59:50,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 15844 transitions. [2021-10-06 20:59:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:50,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:50,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:50,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:50,826 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 [2021-10-06 20:59:50,827 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1347982711, now seen corresponding path program 24 times [2021-10-06 20:59:50,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:50,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088206302] [2021-10-06 20:59:50,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:50,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:50,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:50,831 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) [2021-10-06 20:59:50,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 20:59:51,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 20:59:51,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:51,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:51,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:52,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:53,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:53,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088206302] [2021-10-06 20:59:53,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088206302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:53,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:53,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:53,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788284871] [2021-10-06 20:59:53,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:53,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:53,700 INFO L87 Difference]: Start difference. First operand 4326 states and 15844 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:54,797 INFO L93 Difference]: Finished difference Result 7859 states and 27210 transitions. [2021-10-06 20:59:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:54,818 INFO L225 Difference]: With dead ends: 7859 [2021-10-06 20:59:54,818 INFO L226 Difference]: Without dead ends: 7842 [2021-10-06 20:59:54,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 992.9ms TimeCoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2021-10-06 20:59:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 4344. [2021-10-06 20:59:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 3.6585309693760073) internal successors, (15889), 4343 states have internal predecessors, (15889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 15889 transitions. [2021-10-06 20:59:54,943 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 15889 transitions. Word has length 41 [2021-10-06 20:59:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:54,944 INFO L470 AbstractCegarLoop]: Abstraction has 4344 states and 15889 transitions. [2021-10-06 20:59:54,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 15889 transitions. [2021-10-06 20:59:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:54,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:54,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:54,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:55,168 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 [2021-10-06 20:59:55,169 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:55,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:55,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1510064971, now seen corresponding path program 25 times [2021-10-06 20:59:55,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:55,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472014846] [2021-10-06 20:59:55,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:55,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:55,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:55,172 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) [2021-10-06 20:59:55,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 20:59:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:56,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:56,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:56,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:58,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:58,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472014846] [2021-10-06 20:59:58,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472014846] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:58,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:58,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 20:59:58,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804131406] [2021-10-06 20:59:58,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 20:59:58,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 20:59:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-10-06 20:59:58,227 INFO L87 Difference]: Start difference. First operand 4344 states and 15889 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:59,527 INFO L93 Difference]: Finished difference Result 7841 states and 27180 transitions. [2021-10-06 20:59:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 20:59:59,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:59,555 INFO L225 Difference]: With dead ends: 7841 [2021-10-06 20:59:59,556 INFO L226 Difference]: Without dead ends: 7820 [2021-10-06 20:59:59,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1031.7ms TimeCoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:59:59,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2021-10-06 20:59:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 4338. [2021-10-06 20:59:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.6596725847359926) internal successors, (15872), 4337 states have internal predecessors, (15872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 15872 transitions. [2021-10-06 20:59:59,676 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 15872 transitions. Word has length 41 [2021-10-06 20:59:59,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:59,676 INFO L470 AbstractCegarLoop]: Abstraction has 4338 states and 15872 transitions. [2021-10-06 20:59:59,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 15872 transitions. [2021-10-06 20:59:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 20:59:59,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:59,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:59,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:59,885 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 [2021-10-06 20:59:59,886 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:59:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:59,887 INFO L82 PathProgramCache]: Analyzing trace with hash -630158473, now seen corresponding path program 26 times [2021-10-06 20:59:59,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:59,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815243979] [2021-10-06 20:59:59,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:59,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:59,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:59,889 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) [2021-10-06 20:59:59,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:00:00,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:00:00,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:00,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:00,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:01,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:03,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:03,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815243979] [2021-10-06 21:00:03,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815243979] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:03,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:03,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:03,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051895715] [2021-10-06 21:00:03,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:03,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:03,050 INFO L87 Difference]: Start difference. First operand 4338 states and 15872 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:04,359 INFO L93 Difference]: Finished difference Result 7819 states and 27143 transitions. [2021-10-06 21:00:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:00:04,360 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:04,383 INFO L225 Difference]: With dead ends: 7819 [2021-10-06 21:00:04,383 INFO L226 Difference]: Without dead ends: 7726 [2021-10-06 21:00:04,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1058.8ms TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:00:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2021-10-06 21:00:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 4278. [2021-10-06 21:00:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.6707972878185644) internal successors, (15700), 4277 states have internal predecessors, (15700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 15700 transitions. [2021-10-06 21:00:04,502 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 15700 transitions. Word has length 41 [2021-10-06 21:00:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:04,502 INFO L470 AbstractCegarLoop]: Abstraction has 4278 states and 15700 transitions. [2021-10-06 21:00:04,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 15700 transitions. [2021-10-06 21:00:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:04,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:04,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:04,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:04,711 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 [2021-10-06 21:00:04,711 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash -263307495, now seen corresponding path program 27 times [2021-10-06 21:00:04,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:04,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987599960] [2021-10-06 21:00:04,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:04,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:04,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:04,715 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) [2021-10-06 21:00:04,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:00:05,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:00:05,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:05,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:05,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:06,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:07,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:07,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987599960] [2021-10-06 21:00:07,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987599960] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:07,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:07,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:07,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097426963] [2021-10-06 21:00:07,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:07,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:07,754 INFO L87 Difference]: Start difference. First operand 4278 states and 15700 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:09,147 INFO L93 Difference]: Finished difference Result 7837 states and 27102 transitions. [2021-10-06 21:00:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:00:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:09,172 INFO L225 Difference]: With dead ends: 7837 [2021-10-06 21:00:09,172 INFO L226 Difference]: Without dead ends: 7824 [2021-10-06 21:00:09,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1045.3ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:00:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-10-06 21:00:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 4294. [2021-10-06 21:00:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4293 states have (on average 3.669228977405078) internal successors, (15752), 4293 states have internal predecessors, (15752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 15752 transitions. [2021-10-06 21:00:09,290 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 15752 transitions. Word has length 41 [2021-10-06 21:00:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:09,290 INFO L470 AbstractCegarLoop]: Abstraction has 4294 states and 15752 transitions. [2021-10-06 21:00:09,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 15752 transitions. [2021-10-06 21:00:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:09,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:09,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:09,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:09,513 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 [2021-10-06 21:00:09,514 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:09,515 INFO L82 PathProgramCache]: Analyzing trace with hash -401737465, now seen corresponding path program 28 times [2021-10-06 21:00:09,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:09,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107812399] [2021-10-06 21:00:09,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:09,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:09,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:09,518 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) [2021-10-06 21:00:09,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:00:10,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:10,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:10,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:10,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:11,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:12,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:12,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107812399] [2021-10-06 21:00:12,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107812399] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:12,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:12,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:12,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131513685] [2021-10-06 21:00:12,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:12,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:12,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:12,315 INFO L87 Difference]: Start difference. First operand 4294 states and 15752 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:13,637 INFO L93 Difference]: Finished difference Result 7841 states and 27106 transitions. [2021-10-06 21:00:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:00:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:13,659 INFO L225 Difference]: With dead ends: 7841 [2021-10-06 21:00:13,659 INFO L226 Difference]: Without dead ends: 7820 [2021-10-06 21:00:13,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1050.5ms TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:00:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2021-10-06 21:00:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 4290. [2021-10-06 21:00:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.6700862671951504) internal successors, (15741), 4289 states have internal predecessors, (15741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 15741 transitions. [2021-10-06 21:00:13,769 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 15741 transitions. Word has length 41 [2021-10-06 21:00:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:13,769 INFO L470 AbstractCegarLoop]: Abstraction has 4290 states and 15741 transitions. [2021-10-06 21:00:13,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 15741 transitions. [2021-10-06 21:00:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:13,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:13,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:13,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:13,978 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 [2021-10-06 21:00:13,978 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:13,979 INFO L82 PathProgramCache]: Analyzing trace with hash -834762301, now seen corresponding path program 29 times [2021-10-06 21:00:13,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:13,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766304656] [2021-10-06 21:00:13,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:00:13,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:13,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:13,981 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) [2021-10-06 21:00:13,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:00:15,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:00:15,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:15,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:15,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:15,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:16,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:16,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766304656] [2021-10-06 21:00:16,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766304656] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:16,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:16,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:16,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711813394] [2021-10-06 21:00:16,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:16,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:16,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:16,827 INFO L87 Difference]: Start difference. First operand 4290 states and 15741 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:18,136 INFO L93 Difference]: Finished difference Result 7811 states and 27056 transitions. [2021-10-06 21:00:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:00:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:18,157 INFO L225 Difference]: With dead ends: 7811 [2021-10-06 21:00:18,157 INFO L226 Difference]: Without dead ends: 7798 [2021-10-06 21:00:18,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 977.2ms TimeCoverageRelationStatistics Valid=350, Invalid=982, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:00:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7798 states. [2021-10-06 21:00:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7798 to 4294. [2021-10-06 21:00:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4293 states have (on average 3.6682972280456556) internal successors, (15748), 4293 states have internal predecessors, (15748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 15748 transitions. [2021-10-06 21:00:18,267 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 15748 transitions. Word has length 41 [2021-10-06 21:00:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:18,267 INFO L470 AbstractCegarLoop]: Abstraction has 4294 states and 15748 transitions. [2021-10-06 21:00:18,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 15748 transitions. [2021-10-06 21:00:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:18,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:18,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:18,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:18,475 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 [2021-10-06 21:00:18,476 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1772130103, now seen corresponding path program 30 times [2021-10-06 21:00:18,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:18,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528767388] [2021-10-06 21:00:18,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:00:18,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:18,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:18,480 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) [2021-10-06 21:00:18,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:00:19,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:00:19,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:19,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:20,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:21,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:21,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528767388] [2021-10-06 21:00:21,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528767388] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:21,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:21,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:21,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164163275] [2021-10-06 21:00:21,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:21,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:21,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:21,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:21,428 INFO L87 Difference]: Start difference. First operand 4294 states and 15748 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:22,904 INFO L93 Difference]: Finished difference Result 7831 states and 27089 transitions. [2021-10-06 21:00:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:00:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:22,926 INFO L225 Difference]: With dead ends: 7831 [2021-10-06 21:00:22,927 INFO L226 Difference]: Without dead ends: 7812 [2021-10-06 21:00:22,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1046.1ms TimeCoverageRelationStatistics Valid=378, Invalid=1028, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:00:22,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7812 states. [2021-10-06 21:00:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7812 to 4290. [2021-10-06 21:00:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.6691536488692003) internal successors, (15737), 4289 states have internal predecessors, (15737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 15737 transitions. [2021-10-06 21:00:23,046 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 15737 transitions. Word has length 41 [2021-10-06 21:00:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:23,047 INFO L470 AbstractCegarLoop]: Abstraction has 4290 states and 15737 transitions. [2021-10-06 21:00:23,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 15737 transitions. [2021-10-06 21:00:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:23,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:23,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:23,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:23,256 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 [2021-10-06 21:00:23,256 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:23,257 INFO L82 PathProgramCache]: Analyzing trace with hash 604631745, now seen corresponding path program 31 times [2021-10-06 21:00:23,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:23,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109839682] [2021-10-06 21:00:23,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:00:23,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:23,260 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) [2021-10-06 21:00:23,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:00:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:24,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:24,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:25,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:26,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:26,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109839682] [2021-10-06 21:00:26,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109839682] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:26,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:26,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:26,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985361164] [2021-10-06 21:00:26,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:26,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:26,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:26,147 INFO L87 Difference]: Start difference. First operand 4290 states and 15737 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:27,503 INFO L93 Difference]: Finished difference Result 7841 states and 27101 transitions. [2021-10-06 21:00:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:00:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:27,524 INFO L225 Difference]: With dead ends: 7841 [2021-10-06 21:00:27,525 INFO L226 Difference]: Without dead ends: 7824 [2021-10-06 21:00:27,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 973.5ms TimeCoverageRelationStatistics Valid=333, Invalid=927, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:00:27,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-10-06 21:00:27,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 4296. [2021-10-06 21:00:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4295 states have (on average 3.6665890570430735) internal successors, (15748), 4295 states have internal predecessors, (15748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 15748 transitions. [2021-10-06 21:00:27,646 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 15748 transitions. Word has length 41 [2021-10-06 21:00:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:27,646 INFO L470 AbstractCegarLoop]: Abstraction has 4296 states and 15748 transitions. [2021-10-06 21:00:27,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 15748 transitions. [2021-10-06 21:00:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:27,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:27,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:27,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:27,855 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 [2021-10-06 21:00:27,856 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash -96323047, now seen corresponding path program 32 times [2021-10-06 21:00:27,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:27,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607044283] [2021-10-06 21:00:27,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:00:27,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:27,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:27,859 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) [2021-10-06 21:00:27,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:00:29,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:00:29,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:29,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:29,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:29,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:30,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:30,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607044283] [2021-10-06 21:00:30,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607044283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:30,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:30,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:30,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723122811] [2021-10-06 21:00:30,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:30,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:30,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:30,891 INFO L87 Difference]: Start difference. First operand 4296 states and 15748 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:32,177 INFO L93 Difference]: Finished difference Result 7833 states and 27080 transitions. [2021-10-06 21:00:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:00:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:32,201 INFO L225 Difference]: With dead ends: 7833 [2021-10-06 21:00:32,201 INFO L226 Difference]: Without dead ends: 7808 [2021-10-06 21:00:32,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 982.2ms TimeCoverageRelationStatistics Valid=331, Invalid=929, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:00:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7808 states. [2021-10-06 21:00:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7808 to 4286. [2021-10-06 21:00:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 3.6700116686114352) internal successors, (15726), 4285 states have internal predecessors, (15726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 15726 transitions. [2021-10-06 21:00:32,324 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 15726 transitions. Word has length 41 [2021-10-06 21:00:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:32,324 INFO L470 AbstractCegarLoop]: Abstraction has 4286 states and 15726 transitions. [2021-10-06 21:00:32,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 15726 transitions. [2021-10-06 21:00:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:32,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:32,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:32,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:32,533 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 [2021-10-06 21:00:32,533 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:32,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1321375703, now seen corresponding path program 33 times [2021-10-06 21:00:32,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:32,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873794316] [2021-10-06 21:00:32,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:32,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:32,538 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) [2021-10-06 21:00:32,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:00:33,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:00:33,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:33,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:33,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:34,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:35,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:35,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873794316] [2021-10-06 21:00:35,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873794316] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:35,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:35,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:35,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755139387] [2021-10-06 21:00:35,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:35,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:35,751 INFO L87 Difference]: Start difference. First operand 4286 states and 15726 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:37,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:37,183 INFO L93 Difference]: Finished difference Result 7777 states and 26986 transitions. [2021-10-06 21:00:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:00:37,184 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:37,204 INFO L225 Difference]: With dead ends: 7777 [2021-10-06 21:00:37,205 INFO L226 Difference]: Without dead ends: 7764 [2021-10-06 21:00:37,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1031.5ms TimeCoverageRelationStatistics Valid=340, Invalid=1066, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:00:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7764 states. [2021-10-06 21:00:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7764 to 4298. [2021-10-06 21:00:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.6665115196648825) internal successors, (15755), 4297 states have internal predecessors, (15755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 15755 transitions. [2021-10-06 21:00:37,322 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 15755 transitions. Word has length 41 [2021-10-06 21:00:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:37,322 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 15755 transitions. [2021-10-06 21:00:37,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 15755 transitions. [2021-10-06 21:00:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:37,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:37,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:37,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:37,531 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 [2021-10-06 21:00:37,531 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:37,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:37,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1182945733, now seen corresponding path program 34 times [2021-10-06 21:00:37,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:37,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317064626] [2021-10-06 21:00:37,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:37,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:37,535 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) [2021-10-06 21:00:37,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:00:38,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:38,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:38,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:38,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:39,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:40,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:40,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317064626] [2021-10-06 21:00:40,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317064626] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:40,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:40,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:40,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880071775] [2021-10-06 21:00:40,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:40,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:40,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:40,713 INFO L87 Difference]: Start difference. First operand 4298 states and 15755 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:42,204 INFO L93 Difference]: Finished difference Result 7781 states and 26990 transitions. [2021-10-06 21:00:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:00:42,204 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:42,223 INFO L225 Difference]: With dead ends: 7781 [2021-10-06 21:00:42,223 INFO L226 Difference]: Without dead ends: 7760 [2021-10-06 21:00:42,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1013.4ms TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:00:42,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2021-10-06 21:00:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 4294. [2021-10-06 21:00:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4293 states have (on average 3.6673654786862335) internal successors, (15744), 4293 states have internal predecessors, (15744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 15744 transitions. [2021-10-06 21:00:42,328 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 15744 transitions. Word has length 41 [2021-10-06 21:00:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:42,328 INFO L470 AbstractCegarLoop]: Abstraction has 4294 states and 15744 transitions. [2021-10-06 21:00:42,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 15744 transitions. [2021-10-06 21:00:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:42,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:42,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:42,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:42,538 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 [2021-10-06 21:00:42,538 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash 342643519, now seen corresponding path program 35 times [2021-10-06 21:00:42,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:42,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345034843] [2021-10-06 21:00:42,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:00:42,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:42,542 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) [2021-10-06 21:00:42,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:00:43,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:00:43,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:43,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:43,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:44,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:45,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:45,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345034843] [2021-10-06 21:00:45,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345034843] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:45,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:45,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:45,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665951990] [2021-10-06 21:00:45,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:45,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:45,721 INFO L87 Difference]: Start difference. First operand 4294 states and 15744 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:46,980 INFO L93 Difference]: Finished difference Result 7775 states and 26985 transitions. [2021-10-06 21:00:46,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:00:46,981 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:47,000 INFO L225 Difference]: With dead ends: 7775 [2021-10-06 21:00:47,001 INFO L226 Difference]: Without dead ends: 7734 [2021-10-06 21:00:47,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 969.8ms TimeCoverageRelationStatistics Valid=337, Invalid=923, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:00:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2021-10-06 21:00:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 4286. [2021-10-06 21:00:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 3.668144690781797) internal successors, (15718), 4285 states have internal predecessors, (15718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 15718 transitions. [2021-10-06 21:00:47,117 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 15718 transitions. Word has length 41 [2021-10-06 21:00:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:47,117 INFO L470 AbstractCegarLoop]: Abstraction has 4286 states and 15718 transitions. [2021-10-06 21:00:47,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 15718 transitions. [2021-10-06 21:00:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:47,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:47,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:47,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:47,326 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 [2021-10-06 21:00:47,326 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:47,327 INFO L82 PathProgramCache]: Analyzing trace with hash 325066887, now seen corresponding path program 36 times [2021-10-06 21:00:47,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:47,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455963663] [2021-10-06 21:00:47,328 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:00:47,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:47,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:47,329 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) [2021-10-06 21:00:47,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:00:48,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:00:48,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:48,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:49,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:50,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:50,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455963663] [2021-10-06 21:00:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455963663] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:50,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:50,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:50,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178366622] [2021-10-06 21:00:50,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:50,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:50,559 INFO L87 Difference]: Start difference. First operand 4286 states and 15718 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:51,872 INFO L93 Difference]: Finished difference Result 7843 states and 27098 transitions. [2021-10-06 21:00:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:00:51,872 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:51,893 INFO L225 Difference]: With dead ends: 7843 [2021-10-06 21:00:51,893 INFO L226 Difference]: Without dead ends: 7826 [2021-10-06 21:00:51,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1019.2ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:00:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2021-10-06 21:00:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 4304. [2021-10-06 21:00:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.6632581919590983) internal successors, (15763), 4303 states have internal predecessors, (15763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 15763 transitions. [2021-10-06 21:00:52,007 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 15763 transitions. Word has length 41 [2021-10-06 21:00:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:52,007 INFO L470 AbstractCegarLoop]: Abstraction has 4304 states and 15763 transitions. [2021-10-06 21:00:52,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 15763 transitions. [2021-10-06 21:00:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:52,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:52,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:52,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-06 21:00:52,215 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 [2021-10-06 21:00:52,216 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -375887905, now seen corresponding path program 37 times [2021-10-06 21:00:52,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:52,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496247808] [2021-10-06 21:00:52,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:00:52,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:52,220 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) [2021-10-06 21:00:52,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:00:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:54,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:55,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:55,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496247808] [2021-10-06 21:00:55,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496247808] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:55,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:55,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:00:55,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684326749] [2021-10-06 21:00:55,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:00:55,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:00:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:00:55,635 INFO L87 Difference]: Start difference. First operand 4304 states and 15763 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:56,994 INFO L93 Difference]: Finished difference Result 7843 states and 27101 transitions. [2021-10-06 21:00:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:00:56,995 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:00:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:57,015 INFO L225 Difference]: With dead ends: 7843 [2021-10-06 21:00:57,015 INFO L226 Difference]: Without dead ends: 7822 [2021-10-06 21:00:57,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1093.0ms TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:00:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-10-06 21:00:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 4298. [2021-10-06 21:00:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.664417035140796) internal successors, (15746), 4297 states have internal predecessors, (15746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 15746 transitions. [2021-10-06 21:00:57,127 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 15746 transitions. Word has length 41 [2021-10-06 21:00:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:57,127 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 15746 transitions. [2021-10-06 21:00:57,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 15746 transitions. [2021-10-06 21:00:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:00:57,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:57,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:57,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:57,335 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 [2021-10-06 21:00:57,336 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:00:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:57,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1475317957, now seen corresponding path program 38 times [2021-10-06 21:00:57,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:57,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305702130] [2021-10-06 21:00:57,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:00:57,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:57,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:57,340 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) [2021-10-06 21:00:57,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:00:58,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:00:58,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:58,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:58,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:59,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:00,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:00,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305702130] [2021-10-06 21:01:00,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305702130] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:00,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:00,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:01:00,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954348360] [2021-10-06 21:01:00,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:01:00,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:01:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:01:00,846 INFO L87 Difference]: Start difference. First operand 4298 states and 15746 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:02,171 INFO L93 Difference]: Finished difference Result 7803 states and 27031 transitions. [2021-10-06 21:01:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:01:02,172 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:02,192 INFO L225 Difference]: With dead ends: 7803 [2021-10-06 21:01:02,192 INFO L226 Difference]: Without dead ends: 7698 [2021-10-06 21:01:02,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1089.0ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:01:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7698 states. [2021-10-06 21:01:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7698 to 4226. [2021-10-06 21:01:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4225 states have (on average 3.686627218934911) internal successors, (15576), 4225 states have internal predecessors, (15576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 15576 transitions. [2021-10-06 21:01:02,306 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 15576 transitions. Word has length 41 [2021-10-06 21:01:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:02,306 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 15576 transitions. [2021-10-06 21:01:02,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 15576 transitions. [2021-10-06 21:01:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:02,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:02,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:02,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:02,515 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 [2021-10-06 21:01:02,516 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:02,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1794326517, now seen corresponding path program 39 times [2021-10-06 21:01:02,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:02,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870951264] [2021-10-06 21:01:02,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:01:02,519 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:02,519 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) [2021-10-06 21:01:02,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:01:04,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:01:04,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:04,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:04,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:04,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:05,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:05,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870951264] [2021-10-06 21:01:05,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870951264] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:05,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:05,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:05,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655631369] [2021-10-06 21:01:05,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:05,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:05,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:05,655 INFO L87 Difference]: Start difference. First operand 4226 states and 15576 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:06,664 INFO L93 Difference]: Finished difference Result 7533 states and 26346 transitions. [2021-10-06 21:01:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:06,685 INFO L225 Difference]: With dead ends: 7533 [2021-10-06 21:01:06,685 INFO L226 Difference]: Without dead ends: 7500 [2021-10-06 21:01:06,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 912.9ms TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:06,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2021-10-06 21:01:06,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 4350. [2021-10-06 21:01:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4350 states, 4349 states have (on average 3.651184180271327) internal successors, (15879), 4349 states have internal predecessors, (15879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 15879 transitions. [2021-10-06 21:01:06,797 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 15879 transitions. Word has length 41 [2021-10-06 21:01:06,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:06,797 INFO L470 AbstractCegarLoop]: Abstraction has 4350 states and 15879 transitions. [2021-10-06 21:01:06,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:06,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 15879 transitions. [2021-10-06 21:01:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:06,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:06,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:06,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:07,010 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 [2021-10-06 21:01:07,011 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1542529979, now seen corresponding path program 40 times [2021-10-06 21:01:07,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:07,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132617033] [2021-10-06 21:01:07,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:01:07,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:07,014 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) [2021-10-06 21:01:07,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:01:08,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:01:08,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:08,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:08,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:09,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:10,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:10,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132617033] [2021-10-06 21:01:10,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132617033] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:10,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:10,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:10,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057097362] [2021-10-06 21:01:10,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:10,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:10,252 INFO L87 Difference]: Start difference. First operand 4350 states and 15879 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:11,232 INFO L93 Difference]: Finished difference Result 7539 states and 26336 transitions. [2021-10-06 21:01:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:11,233 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:11,252 INFO L225 Difference]: With dead ends: 7539 [2021-10-06 21:01:11,252 INFO L226 Difference]: Without dead ends: 7522 [2021-10-06 21:01:11,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 891.0ms TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2021-10-06 21:01:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 4356. [2021-10-06 21:01:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4355 states have (on average 3.6486796785304247) internal successors, (15890), 4355 states have internal predecessors, (15890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 15890 transitions. [2021-10-06 21:01:11,366 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 15890 transitions. Word has length 41 [2021-10-06 21:01:11,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:11,366 INFO L470 AbstractCegarLoop]: Abstraction has 4356 states and 15890 transitions. [2021-10-06 21:01:11,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 15890 transitions. [2021-10-06 21:01:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:11,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:11,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:11,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:11,576 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 [2021-10-06 21:01:11,577 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:11,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1380447719, now seen corresponding path program 41 times [2021-10-06 21:01:11,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:11,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251538733] [2021-10-06 21:01:11,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:01:11,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:11,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:11,580 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) [2021-10-06 21:01:11,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:01:13,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:01:13,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:13,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:13,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:13,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:15,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:15,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251538733] [2021-10-06 21:01:15,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251538733] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:15,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:15,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:15,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128818597] [2021-10-06 21:01:15,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:15,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:15,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:15,101 INFO L87 Difference]: Start difference. First operand 4356 states and 15890 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:16,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:16,092 INFO L93 Difference]: Finished difference Result 7521 states and 26306 transitions. [2021-10-06 21:01:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:16,093 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:16,113 INFO L225 Difference]: With dead ends: 7521 [2021-10-06 21:01:16,114 INFO L226 Difference]: Without dead ends: 7482 [2021-10-06 21:01:16,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 962.3ms TimeCoverageRelationStatistics Valid=341, Invalid=781, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-10-06 21:01:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 4332. [2021-10-06 21:01:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4331 states have (on average 3.6545832371276843) internal successors, (15828), 4331 states have internal predecessors, (15828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 15828 transitions. [2021-10-06 21:01:16,231 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 15828 transitions. Word has length 41 [2021-10-06 21:01:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:16,231 INFO L470 AbstractCegarLoop]: Abstraction has 4332 states and 15828 transitions. [2021-10-06 21:01:16,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 15828 transitions. [2021-10-06 21:01:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:16,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:16,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:16,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:16,440 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 [2021-10-06 21:01:16,441 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:16,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:16,441 INFO L82 PathProgramCache]: Analyzing trace with hash -516011785, now seen corresponding path program 42 times [2021-10-06 21:01:16,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:16,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466977166] [2021-10-06 21:01:16,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:01:16,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:16,445 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) [2021-10-06 21:01:16,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:01:18,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:01:18,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:18,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:18,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:20,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:20,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466977166] [2021-10-06 21:01:20,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466977166] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:20,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:20,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:20,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649199682] [2021-10-06 21:01:20,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:20,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:20,105 INFO L87 Difference]: Start difference. First operand 4332 states and 15828 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:21,105 INFO L93 Difference]: Finished difference Result 7549 states and 26331 transitions. [2021-10-06 21:01:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:01:21,105 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:21,126 INFO L225 Difference]: With dead ends: 7549 [2021-10-06 21:01:21,127 INFO L226 Difference]: Without dead ends: 7532 [2021-10-06 21:01:21,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 986.4ms TimeCoverageRelationStatistics Valid=368, Invalid=822, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:01:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2021-10-06 21:01:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 4350. [2021-10-06 21:01:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4350 states, 4349 states have (on average 3.649804552770752) internal successors, (15873), 4349 states have internal predecessors, (15873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 15873 transitions. [2021-10-06 21:01:21,241 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 15873 transitions. Word has length 41 [2021-10-06 21:01:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:21,241 INFO L470 AbstractCegarLoop]: Abstraction has 4350 states and 15873 transitions. [2021-10-06 21:01:21,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:21,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 15873 transitions. [2021-10-06 21:01:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:21,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:21,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:21,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:21,451 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 [2021-10-06 21:01:21,452 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash -353929525, now seen corresponding path program 43 times [2021-10-06 21:01:21,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:21,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892301314] [2021-10-06 21:01:21,454 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:01:21,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:21,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:21,455 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) [2021-10-06 21:01:21,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:01:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:23,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:23,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:23,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:25,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:25,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892301314] [2021-10-06 21:01:25,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892301314] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:25,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:25,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:25,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405781970] [2021-10-06 21:01:25,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:25,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:25,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:25,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:25,318 INFO L87 Difference]: Start difference. First operand 4350 states and 15873 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:26,458 INFO L93 Difference]: Finished difference Result 7531 states and 26301 transitions. [2021-10-06 21:01:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:01:26,459 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:26,478 INFO L225 Difference]: With dead ends: 7531 [2021-10-06 21:01:26,479 INFO L226 Difference]: Without dead ends: 7510 [2021-10-06 21:01:26,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1050.5ms TimeCoverageRelationStatistics Valid=396, Invalid=864, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:01:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7510 states. [2021-10-06 21:01:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7510 to 4344. [2021-10-06 21:01:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 3.6509325351139763) internal successors, (15856), 4343 states have internal predecessors, (15856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 15856 transitions. [2021-10-06 21:01:26,590 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 15856 transitions. Word has length 41 [2021-10-06 21:01:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:26,590 INFO L470 AbstractCegarLoop]: Abstraction has 4344 states and 15856 transitions. [2021-10-06 21:01:26,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 15856 transitions. [2021-10-06 21:01:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:26,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:26,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:26,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:26,799 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 [2021-10-06 21:01:26,799 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:26,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1800814327, now seen corresponding path program 44 times [2021-10-06 21:01:26,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:26,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226885517] [2021-10-06 21:01:26,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:26,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:26,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:26,803 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) [2021-10-06 21:01:26,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:01:28,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:01:28,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:28,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:28,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:29,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:30,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:30,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226885517] [2021-10-06 21:01:30,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226885517] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:30,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:30,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:30,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141089279] [2021-10-06 21:01:30,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:30,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:30,687 INFO L87 Difference]: Start difference. First operand 4344 states and 15856 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:31,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:31,862 INFO L93 Difference]: Finished difference Result 7509 states and 26264 transitions. [2021-10-06 21:01:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:01:31,863 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:31,883 INFO L225 Difference]: With dead ends: 7509 [2021-10-06 21:01:31,883 INFO L226 Difference]: Without dead ends: 7388 [2021-10-06 21:01:31,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 969.5ms TimeCoverageRelationStatistics Valid=372, Invalid=818, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:01:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7388 states. [2021-10-06 21:01:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7388 to 4256. [2021-10-06 21:01:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.675675675675676) internal successors, (15640), 4255 states have internal predecessors, (15640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 15640 transitions. [2021-10-06 21:01:32,000 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 15640 transitions. Word has length 41 [2021-10-06 21:01:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:32,000 INFO L470 AbstractCegarLoop]: Abstraction has 4256 states and 15640 transitions. [2021-10-06 21:01:32,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 15640 transitions. [2021-10-06 21:01:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:32,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:32,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:32,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:32,209 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 [2021-10-06 21:01:32,210 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1105420333, now seen corresponding path program 45 times [2021-10-06 21:01:32,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:32,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508502111] [2021-10-06 21:01:32,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:01:32,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:32,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:32,213 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) [2021-10-06 21:01:32,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:01:33,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:01:33,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:33,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:33,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:34,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:35,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:35,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508502111] [2021-10-06 21:01:35,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508502111] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:35,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:35,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:35,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465849664] [2021-10-06 21:01:35,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:35,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:35,750 INFO L87 Difference]: Start difference. First operand 4256 states and 15640 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:36,775 INFO L93 Difference]: Finished difference Result 7601 states and 26519 transitions. [2021-10-06 21:01:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:36,796 INFO L225 Difference]: With dead ends: 7601 [2021-10-06 21:01:36,796 INFO L226 Difference]: Without dead ends: 7568 [2021-10-06 21:01:36,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 926.6ms TimeCoverageRelationStatistics Valid=341, Invalid=781, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7568 states. [2021-10-06 21:01:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7568 to 4358. [2021-10-06 21:01:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.6504475556575624) internal successors, (15905), 4357 states have internal predecessors, (15905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 15905 transitions. [2021-10-06 21:01:36,910 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 15905 transitions. Word has length 41 [2021-10-06 21:01:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:36,910 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 15905 transitions. [2021-10-06 21:01:36,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 15905 transitions. [2021-10-06 21:01:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:36,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:36,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:36,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:37,118 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 [2021-10-06 21:01:37,119 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1357216871, now seen corresponding path program 46 times [2021-10-06 21:01:37,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:37,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150231860] [2021-10-06 21:01:37,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:01:37,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:37,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:37,122 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) [2021-10-06 21:01:37,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:01:38,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:01:38,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:38,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:38,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:39,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:40,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:40,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150231860] [2021-10-06 21:01:40,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150231860] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:40,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:40,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:40,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13401372] [2021-10-06 21:01:40,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:40,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:40,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:40,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:40,497 INFO L87 Difference]: Start difference. First operand 4358 states and 15905 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:41,522 INFO L93 Difference]: Finished difference Result 7607 states and 26509 transitions. [2021-10-06 21:01:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:41,522 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:41,543 INFO L225 Difference]: With dead ends: 7607 [2021-10-06 21:01:41,543 INFO L226 Difference]: Without dead ends: 7590 [2021-10-06 21:01:41,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 936.2ms TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2021-10-06 21:01:41,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 4364. [2021-10-06 21:01:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4364 states, 4363 states have (on average 3.647948659179464) internal successors, (15916), 4363 states have internal predecessors, (15916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 15916 transitions. [2021-10-06 21:01:41,652 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 15916 transitions. Word has length 41 [2021-10-06 21:01:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:41,652 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 15916 transitions. [2021-10-06 21:01:41,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 15916 transitions. [2021-10-06 21:01:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:41,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:41,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:41,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:41,861 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 [2021-10-06 21:01:41,862 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1519299131, now seen corresponding path program 47 times [2021-10-06 21:01:41,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:41,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936329095] [2021-10-06 21:01:41,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:01:41,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:41,870 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) [2021-10-06 21:01:41,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:01:43,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:01:43,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:43,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:44,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:45,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:45,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936329095] [2021-10-06 21:01:45,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936329095] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:45,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:45,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:45,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590766115] [2021-10-06 21:01:45,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:45,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:45,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:45,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:45,473 INFO L87 Difference]: Start difference. First operand 4364 states and 15916 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:46,477 INFO L93 Difference]: Finished difference Result 7589 states and 26479 transitions. [2021-10-06 21:01:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:46,477 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:46,498 INFO L225 Difference]: With dead ends: 7589 [2021-10-06 21:01:46,498 INFO L226 Difference]: Without dead ends: 7550 [2021-10-06 21:01:46,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 927.9ms TimeCoverageRelationStatistics Valid=339, Invalid=783, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7550 states. [2021-10-06 21:01:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7550 to 4340. [2021-10-06 21:01:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4339 states have (on average 3.653837289698087) internal successors, (15854), 4339 states have internal predecessors, (15854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 15854 transitions. [2021-10-06 21:01:46,613 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 15854 transitions. Word has length 41 [2021-10-06 21:01:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:46,613 INFO L470 AbstractCegarLoop]: Abstraction has 4340 states and 15854 transitions. [2021-10-06 21:01:46,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 15854 transitions. [2021-10-06 21:01:46,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:46,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:46,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:46,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:46,822 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 [2021-10-06 21:01:46,823 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1911232231, now seen corresponding path program 48 times [2021-10-06 21:01:46,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:46,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244997039] [2021-10-06 21:01:46,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:01:46,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:46,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:46,826 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) [2021-10-06 21:01:46,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:01:49,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:01:49,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:49,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:49,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:49,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:50,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:50,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244997039] [2021-10-06 21:01:50,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244997039] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:50,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:50,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:50,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325882637] [2021-10-06 21:01:50,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:50,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:50,811 INFO L87 Difference]: Start difference. First operand 4340 states and 15854 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:51,899 INFO L93 Difference]: Finished difference Result 7617 states and 26494 transitions. [2021-10-06 21:01:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:51,900 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:51,920 INFO L225 Difference]: With dead ends: 7617 [2021-10-06 21:01:51,920 INFO L226 Difference]: Without dead ends: 7600 [2021-10-06 21:01:51,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 907.1ms TimeCoverageRelationStatistics Valid=341, Invalid=781, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:01:51,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2021-10-06 21:01:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 4358. [2021-10-06 21:01:52,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.649070461326601) internal successors, (15899), 4357 states have internal predecessors, (15899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 15899 transitions. [2021-10-06 21:01:52,031 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 15899 transitions. Word has length 41 [2021-10-06 21:01:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:52,032 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 15899 transitions. [2021-10-06 21:01:52,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 15899 transitions. [2021-10-06 21:01:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:52,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:52,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:52,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:52,242 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 [2021-10-06 21:01:52,243 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:52,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:52,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1749149971, now seen corresponding path program 49 times [2021-10-06 21:01:52,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:52,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323874544] [2021-10-06 21:01:52,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:01:52,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:52,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:52,246 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) [2021-10-06 21:01:52,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:01:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:54,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:54,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:54,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:55,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:55,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323874544] [2021-10-06 21:01:55,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323874544] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:55,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:55,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:01:55,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428397924] [2021-10-06 21:01:55,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:01:55,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:01:55,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:01:55,986 INFO L87 Difference]: Start difference. First operand 4358 states and 15899 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:57,154 INFO L93 Difference]: Finished difference Result 7614 states and 26483 transitions. [2021-10-06 21:01:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:01:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 41 [2021-10-06 21:01:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:57,174 INFO L225 Difference]: With dead ends: 7614 [2021-10-06 21:01:57,175 INFO L226 Difference]: Without dead ends: 7548 [2021-10-06 21:01:57,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 978.4ms TimeCoverageRelationStatistics Valid=399, Invalid=861, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:01:57,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7548 states. [2021-10-06 21:01:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7548 to 4358. [2021-10-06 21:01:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.647693366995639) internal successors, (15893), 4357 states have internal predecessors, (15893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 15893 transitions. [2021-10-06 21:01:57,287 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 15893 transitions. Word has length 41 [2021-10-06 21:01:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:57,287 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 15893 transitions. [2021-10-06 21:01:57,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 15893 transitions. [2021-10-06 21:01:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:01:57,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:57,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:57,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:57,495 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 [2021-10-06 21:01:57,496 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:01:57,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:57,497 INFO L82 PathProgramCache]: Analyzing trace with hash 405593881, now seen corresponding path program 50 times [2021-10-06 21:01:57,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:57,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359476276] [2021-10-06 21:01:57,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:57,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:57,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:57,499 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) [2021-10-06 21:01:57,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:01:59,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:01:59,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:59,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:59,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:00,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:01,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:01,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359476276] [2021-10-06 21:02:01,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359476276] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:01,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:01,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-06 21:02:01,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35683594] [2021-10-06 21:02:01,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:02:01,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:02:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:02:01,263 INFO L87 Difference]: Start difference. First operand 4358 states and 15893 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:02,306 INFO L93 Difference]: Finished difference Result 7547 states and 26366 transitions. [2021-10-06 21:02:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:02,306 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:02,326 INFO L225 Difference]: With dead ends: 7547 [2021-10-06 21:02:02,326 INFO L226 Difference]: Without dead ends: 7454 [2021-10-06 21:02:02,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 942.8ms TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:02:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2021-10-06 21:02:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 4298. [2021-10-06 21:02:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.661857109611357) internal successors, (15735), 4297 states have internal predecessors, (15735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 15735 transitions. [2021-10-06 21:02:02,543 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 15735 transitions. Word has length 41 [2021-10-06 21:02:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:02,543 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 15735 transitions. [2021-10-06 21:02:02,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 15735 transitions. [2021-10-06 21:02:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:02,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:02,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:02,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:02,756 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 [2021-10-06 21:02:02,757 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:02,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:02,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1196579203, now seen corresponding path program 51 times [2021-10-06 21:02:02,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:02,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857191035] [2021-10-06 21:02:02,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:02,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:02,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:02,761 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) [2021-10-06 21:02:02,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:02:04,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:02:04,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:04,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:02:04,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:04,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:04,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:04,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857191035] [2021-10-06 21:02:04,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857191035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:04,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:04,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-06 21:02:04,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641765937] [2021-10-06 21:02:04,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:04,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:04,917 INFO L87 Difference]: Start difference. First operand 4298 states and 15735 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:04,952 INFO L93 Difference]: Finished difference Result 4114 states and 14528 transitions. [2021-10-06 21:02:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:02:04,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:04,962 INFO L225 Difference]: With dead ends: 4114 [2021-10-06 21:02:04,963 INFO L226 Difference]: Without dead ends: 3416 [2021-10-06 21:02:04,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:02:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2021-10-06 21:02:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 3416. [2021-10-06 21:02:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 3415 states have (on average 3.5847730600292826) internal successors, (12242), 3415 states have internal predecessors, (12242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 12242 transitions. [2021-10-06 21:02:05,028 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 12242 transitions. Word has length 41 [2021-10-06 21:02:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:05,028 INFO L470 AbstractCegarLoop]: Abstraction has 3416 states and 12242 transitions. [2021-10-06 21:02:05,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:05,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 12242 transitions. [2021-10-06 21:02:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:05,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:05,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:05,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:05,235 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 [2021-10-06 21:02:05,235 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:05,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:05,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2123872375, now seen corresponding path program 52 times [2021-10-06 21:02:05,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:05,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673902257] [2021-10-06 21:02:05,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:05,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:05,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:05,238 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) [2021-10-06 21:02:05,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:02:07,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:07,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:07,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:08,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:09,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:09,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673902257] [2021-10-06 21:02:09,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673902257] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:09,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:09,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:09,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376898988] [2021-10-06 21:02:09,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:09,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:09,285 INFO L87 Difference]: Start difference. First operand 3416 states and 12242 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:10,757 INFO L93 Difference]: Finished difference Result 6209 states and 20959 transitions. [2021-10-06 21:02:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:10,758 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:10,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:10,773 INFO L225 Difference]: With dead ends: 6209 [2021-10-06 21:02:10,774 INFO L226 Difference]: Without dead ends: 6182 [2021-10-06 21:02:10,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 977.7ms TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2021-10-06 21:02:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 3476. [2021-10-06 21:02:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 3.57841726618705) internal successors, (12435), 3475 states have internal predecessors, (12435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 12435 transitions. [2021-10-06 21:02:11,005 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 12435 transitions. Word has length 41 [2021-10-06 21:02:11,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:11,005 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 12435 transitions. [2021-10-06 21:02:11,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 12435 transitions. [2021-10-06 21:02:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:11,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:11,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:11,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:11,213 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 [2021-10-06 21:02:11,214 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1616900803, now seen corresponding path program 53 times [2021-10-06 21:02:11,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:11,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882079929] [2021-10-06 21:02:11,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:11,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:11,218 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) [2021-10-06 21:02:11,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:02:13,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:02:13,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:13,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:13,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:13,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:14,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:14,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882079929] [2021-10-06 21:02:14,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882079929] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:14,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:14,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:14,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384999016] [2021-10-06 21:02:14,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:14,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:14,806 INFO L87 Difference]: Start difference. First operand 3476 states and 12435 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:15,937 INFO L93 Difference]: Finished difference Result 6199 states and 20936 transitions. [2021-10-06 21:02:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:15,955 INFO L225 Difference]: With dead ends: 6199 [2021-10-06 21:02:15,955 INFO L226 Difference]: Without dead ends: 6186 [2021-10-06 21:02:15,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 911.6ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-10-06 21:02:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 3480. [2021-10-06 21:02:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3480 states, 3479 states have (on average 3.576315033055476) internal successors, (12442), 3479 states have internal predecessors, (12442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 12442 transitions. [2021-10-06 21:02:16,043 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 12442 transitions. Word has length 41 [2021-10-06 21:02:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:16,044 INFO L470 AbstractCegarLoop]: Abstraction has 3480 states and 12442 transitions. [2021-10-06 21:02:16,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 12442 transitions. [2021-10-06 21:02:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:16,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:16,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:16,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-06 21:02:16,251 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 [2021-10-06 21:02:16,251 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash 679533001, now seen corresponding path program 54 times [2021-10-06 21:02:16,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:16,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417401195] [2021-10-06 21:02:16,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:02:16,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:16,254 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) [2021-10-06 21:02:16,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:02:18,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:02:18,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:18,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:18,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:18,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:20,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:20,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417401195] [2021-10-06 21:02:20,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417401195] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:20,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:20,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:20,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518185378] [2021-10-06 21:02:20,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:20,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:20,066 INFO L87 Difference]: Start difference. First operand 3480 states and 12442 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:21,354 INFO L93 Difference]: Finished difference Result 6201 states and 20936 transitions. [2021-10-06 21:02:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:21,354 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:21,371 INFO L225 Difference]: With dead ends: 6201 [2021-10-06 21:02:21,372 INFO L226 Difference]: Without dead ends: 6174 [2021-10-06 21:02:21,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 935.3ms TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2021-10-06 21:02:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 3468. [2021-10-06 21:02:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3467 states have (on average 3.5803288145370638) internal successors, (12413), 3467 states have internal predecessors, (12413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 12413 transitions. [2021-10-06 21:02:21,460 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 12413 transitions. Word has length 41 [2021-10-06 21:02:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:21,460 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 12413 transitions. [2021-10-06 21:02:21,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 12413 transitions. [2021-10-06 21:02:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:21,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:21,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:21,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:21,667 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 [2021-10-06 21:02:21,668 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash 686232633, now seen corresponding path program 55 times [2021-10-06 21:02:21,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:21,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119389847] [2021-10-06 21:02:21,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:02:21,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:21,672 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) [2021-10-06 21:02:21,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:02:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:23,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:23,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:24,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:25,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:25,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119389847] [2021-10-06 21:02:25,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119389847] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:25,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:25,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:25,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923424861] [2021-10-06 21:02:25,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:25,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:25,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:25,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:25,549 INFO L87 Difference]: Start difference. First operand 3468 states and 12413 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:26,767 INFO L93 Difference]: Finished difference Result 6243 states and 21015 transitions. [2021-10-06 21:02:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:26,767 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:26,784 INFO L225 Difference]: With dead ends: 6243 [2021-10-06 21:02:26,785 INFO L226 Difference]: Without dead ends: 6216 [2021-10-06 21:02:26,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 989.2ms TimeCoverageRelationStatistics Valid=314, Invalid=876, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2021-10-06 21:02:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 3480. [2021-10-06 21:02:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3480 states, 3479 states have (on average 3.574302960620868) internal successors, (12435), 3479 states have internal predecessors, (12435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 12435 transitions. [2021-10-06 21:02:26,873 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 12435 transitions. Word has length 41 [2021-10-06 21:02:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:26,873 INFO L470 AbstractCegarLoop]: Abstraction has 3480 states and 12435 transitions. [2021-10-06 21:02:26,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 12435 transitions. [2021-10-06 21:02:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:26,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:26,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:26,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:27,081 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 [2021-10-06 21:02:27,082 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:27,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash 938029171, now seen corresponding path program 56 times [2021-10-06 21:02:27,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:27,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983082127] [2021-10-06 21:02:27,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:27,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:27,085 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) [2021-10-06 21:02:27,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:02:29,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:02:29,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:29,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:29,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:29,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:30,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:30,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983082127] [2021-10-06 21:02:30,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983082127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:30,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:30,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:30,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825003189] [2021-10-06 21:02:30,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:30,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:30,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:30,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:30,943 INFO L87 Difference]: Start difference. First operand 3480 states and 12435 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:32,067 INFO L93 Difference]: Finished difference Result 6239 states and 21002 transitions. [2021-10-06 21:02:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:32,083 INFO L225 Difference]: With dead ends: 6239 [2021-10-06 21:02:32,083 INFO L226 Difference]: Without dead ends: 6222 [2021-10-06 21:02:32,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 962.4ms TimeCoverageRelationStatistics Valid=320, Invalid=870, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2021-10-06 21:02:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 3486. [2021-10-06 21:02:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3485 states have (on average 3.5713055954088953) internal successors, (12446), 3485 states have internal predecessors, (12446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 12446 transitions. [2021-10-06 21:02:32,169 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 12446 transitions. Word has length 41 [2021-10-06 21:02:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:32,170 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 12446 transitions. [2021-10-06 21:02:32,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 12446 transitions. [2021-10-06 21:02:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:32,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:32,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:32,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:32,377 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 [2021-10-06 21:02:32,378 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1100111431, now seen corresponding path program 57 times [2021-10-06 21:02:32,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:32,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089763493] [2021-10-06 21:02:32,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:32,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:32,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:32,381 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) [2021-10-06 21:02:32,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:02:34,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:02:34,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:34,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:34,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:35,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:36,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:36,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089763493] [2021-10-06 21:02:36,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089763493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:36,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:36,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:36,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168448183] [2021-10-06 21:02:36,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:36,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:36,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:36,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:36,433 INFO L87 Difference]: Start difference. First operand 3486 states and 12446 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:37,601 INFO L93 Difference]: Finished difference Result 6221 states and 20972 transitions. [2021-10-06 21:02:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:37,602 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:37,618 INFO L225 Difference]: With dead ends: 6221 [2021-10-06 21:02:37,618 INFO L226 Difference]: Without dead ends: 6188 [2021-10-06 21:02:37,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 974.7ms TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6188 states. [2021-10-06 21:02:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6188 to 3468. [2021-10-06 21:02:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3467 states have (on average 3.5780213441015287) internal successors, (12405), 3467 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 12405 transitions. [2021-10-06 21:02:37,707 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 12405 transitions. Word has length 41 [2021-10-06 21:02:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:37,707 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 12405 transitions. [2021-10-06 21:02:37,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 12405 transitions. [2021-10-06 21:02:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:37,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:37,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:37,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:37,930 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 [2021-10-06 21:02:37,931 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1754757703, now seen corresponding path program 58 times [2021-10-06 21:02:37,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:37,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75533764] [2021-10-06 21:02:37,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:37,932 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:37,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:37,934 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) [2021-10-06 21:02:37,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:02:40,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:40,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:40,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:40,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:41,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:42,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:42,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75533764] [2021-10-06 21:02:42,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75533764] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:42,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:42,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:42,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362087043] [2021-10-06 21:02:42,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:42,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:42,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:42,080 INFO L87 Difference]: Start difference. First operand 3468 states and 12405 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:43,336 INFO L93 Difference]: Finished difference Result 6227 states and 20980 transitions. [2021-10-06 21:02:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:02:43,336 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:43,353 INFO L225 Difference]: With dead ends: 6227 [2021-10-06 21:02:43,354 INFO L226 Difference]: Without dead ends: 6214 [2021-10-06 21:02:43,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 974.4ms TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:02:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-10-06 21:02:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 3476. [2021-10-06 21:02:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 3.5761151079136693) internal successors, (12427), 3475 states have internal predecessors, (12427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 12427 transitions. [2021-10-06 21:02:43,437 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 12427 transitions. Word has length 41 [2021-10-06 21:02:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:43,437 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 12427 transitions. [2021-10-06 21:02:43,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 12427 transitions. [2021-10-06 21:02:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:43,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:43,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:43,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:43,645 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 [2021-10-06 21:02:43,646 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:43,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:43,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1893187673, now seen corresponding path program 59 times [2021-10-06 21:02:43,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:43,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372100810] [2021-10-06 21:02:43,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:43,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:43,649 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) [2021-10-06 21:02:43,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:02:46,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:02:46,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:46,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:46,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:46,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:47,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:47,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372100810] [2021-10-06 21:02:47,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372100810] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:47,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:47,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:47,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839918036] [2021-10-06 21:02:47,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:47,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:47,632 INFO L87 Difference]: Start difference. First operand 3476 states and 12427 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:48,778 INFO L93 Difference]: Finished difference Result 6231 states and 20984 transitions. [2021-10-06 21:02:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:02:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:48,795 INFO L225 Difference]: With dead ends: 6231 [2021-10-06 21:02:48,795 INFO L226 Difference]: Without dead ends: 6210 [2021-10-06 21:02:48,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 989.0ms TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:02:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6210 states. [2021-10-06 21:02:49,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6210 to 3472. [2021-10-06 21:02:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 3.577067127628925) internal successors, (12416), 3471 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 12416 transitions. [2021-10-06 21:02:49,019 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 12416 transitions. Word has length 41 [2021-10-06 21:02:49,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:49,020 INFO L470 AbstractCegarLoop]: Abstraction has 3472 states and 12416 transitions. [2021-10-06 21:02:49,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 12416 transitions. [2021-10-06 21:02:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:49,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:49,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:49,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:49,241 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 [2021-10-06 21:02:49,242 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:49,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1968754787, now seen corresponding path program 60 times [2021-10-06 21:02:49,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:49,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578586542] [2021-10-06 21:02:49,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:02:49,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:49,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:49,246 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) [2021-10-06 21:02:49,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:02:51,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:02:51,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:51,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:51,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:52,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:53,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:53,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578586542] [2021-10-06 21:02:53,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578586542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:53,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:53,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:53,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035951682] [2021-10-06 21:02:53,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:53,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:53,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:53,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:53,095 INFO L87 Difference]: Start difference. First operand 3472 states and 12416 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:54,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:54,272 INFO L93 Difference]: Finished difference Result 6235 states and 20978 transitions. [2021-10-06 21:02:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:54,272 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:54,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:54,288 INFO L225 Difference]: With dead ends: 6235 [2021-10-06 21:02:54,289 INFO L226 Difference]: Without dead ends: 6222 [2021-10-06 21:02:54,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 919.1ms TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2021-10-06 21:02:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 3476. [2021-10-06 21:02:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 3.5749640287769786) internal successors, (12423), 3475 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 12423 transitions. [2021-10-06 21:02:54,375 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 12423 transitions. Word has length 41 [2021-10-06 21:02:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:54,376 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 12423 transitions. [2021-10-06 21:02:54,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 12423 transitions. [2021-10-06 21:02:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:02:54,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:54,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:54,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:54,583 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 [2021-10-06 21:02:54,584 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:02:54,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1031386985, now seen corresponding path program 61 times [2021-10-06 21:02:54,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:54,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860974862] [2021-10-06 21:02:54,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:02:54,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:54,587 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) [2021-10-06 21:02:54,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:02:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:56,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:02:56,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:57,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:58,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:58,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860974862] [2021-10-06 21:02:58,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860974862] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:58,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:58,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:02:58,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151700688] [2021-10-06 21:02:58,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:02:58,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:02:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:02:58,546 INFO L87 Difference]: Start difference. First operand 3476 states and 12423 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:59,922 INFO L93 Difference]: Finished difference Result 6227 states and 20969 transitions. [2021-10-06 21:02:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:02:59,922 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:02:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:59,938 INFO L225 Difference]: With dead ends: 6227 [2021-10-06 21:02:59,938 INFO L226 Difference]: Without dead ends: 6208 [2021-10-06 21:02:59,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 935.1ms TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:02:59,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2021-10-06 21:03:00,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 3472. [2021-10-06 21:03:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 3.5759147219821377) internal successors, (12412), 3471 states have internal predecessors, (12412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 12412 transitions. [2021-10-06 21:03:00,022 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 12412 transitions. Word has length 41 [2021-10-06 21:03:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:00,022 INFO L470 AbstractCegarLoop]: Abstraction has 3472 states and 12412 transitions. [2021-10-06 21:03:00,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 12412 transitions. [2021-10-06 21:03:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:00,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:00,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:00,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:00,229 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 [2021-10-06 21:03:00,230 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash -886818463, now seen corresponding path program 62 times [2021-10-06 21:03:00,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:00,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471077346] [2021-10-06 21:03:00,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:00,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:00,233 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) [2021-10-06 21:03:00,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:03:02,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:03:02,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:02,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:02,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:03,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:04,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:04,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471077346] [2021-10-06 21:03:04,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471077346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:04,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:04,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:04,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112386093] [2021-10-06 21:03:04,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:04,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:04,282 INFO L87 Difference]: Start difference. First operand 3472 states and 12412 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:05,425 INFO L93 Difference]: Finished difference Result 6231 states and 20979 transitions. [2021-10-06 21:03:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:05,425 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:05,440 INFO L225 Difference]: With dead ends: 6231 [2021-10-06 21:03:05,440 INFO L226 Difference]: Without dead ends: 6214 [2021-10-06 21:03:05,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 930.4ms TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-10-06 21:03:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 3478. [2021-10-06 21:03:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 3.5729076790336496) internal successors, (12423), 3477 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 12423 transitions. [2021-10-06 21:03:05,524 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 12423 transitions. Word has length 41 [2021-10-06 21:03:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:05,524 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 12423 transitions. [2021-10-06 21:03:05,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 12423 transitions. [2021-10-06 21:03:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:05,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:05,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:05,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:05,731 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 [2021-10-06 21:03:05,732 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:05,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1587773255, now seen corresponding path program 63 times [2021-10-06 21:03:05,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:05,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815770496] [2021-10-06 21:03:05,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:05,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:05,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:05,735 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) [2021-10-06 21:03:05,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:03:08,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:03:08,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:08,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:08,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:08,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:09,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:09,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815770496] [2021-10-06 21:03:09,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815770496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:09,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:09,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:09,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701010226] [2021-10-06 21:03:09,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:09,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:09,669 INFO L87 Difference]: Start difference. First operand 3478 states and 12423 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:10,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:10,916 INFO L93 Difference]: Finished difference Result 6213 states and 20949 transitions. [2021-10-06 21:03:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:10,933 INFO L225 Difference]: With dead ends: 6213 [2021-10-06 21:03:10,933 INFO L226 Difference]: Without dead ends: 6180 [2021-10-06 21:03:10,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 928.6ms TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:10,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2021-10-06 21:03:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 3460. [2021-10-06 21:03:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3459 states have (on average 3.5799363978028333) internal successors, (12383), 3459 states have internal predecessors, (12383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 12383 transitions. [2021-10-06 21:03:11,139 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 12383 transitions. Word has length 41 [2021-10-06 21:03:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:11,139 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 12383 transitions. [2021-10-06 21:03:11,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 12383 transitions. [2021-10-06 21:03:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:11,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:11,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:11,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:11,351 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 [2021-10-06 21:03:11,352 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:11,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1723527413, now seen corresponding path program 64 times [2021-10-06 21:03:11,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:11,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793300231] [2021-10-06 21:03:11,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:11,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:11,356 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) [2021-10-06 21:03:11,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:03:13,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:13,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:13,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:13,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:14,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:15,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:15,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793300231] [2021-10-06 21:03:15,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793300231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:15,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:15,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:15,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130347757] [2021-10-06 21:03:15,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:15,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:15,607 INFO L87 Difference]: Start difference. First operand 3460 states and 12383 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:16,890 INFO L93 Difference]: Finished difference Result 6295 states and 21150 transitions. [2021-10-06 21:03:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:16,891 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:16,907 INFO L225 Difference]: With dead ends: 6295 [2021-10-06 21:03:16,907 INFO L226 Difference]: Without dead ends: 6268 [2021-10-06 21:03:16,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 997.8ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2021-10-06 21:03:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 3514. [2021-10-06 21:03:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3513 states have (on average 3.5616282379732422) internal successors, (12512), 3513 states have internal predecessors, (12512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 12512 transitions. [2021-10-06 21:03:16,994 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 12512 transitions. Word has length 41 [2021-10-06 21:03:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:16,994 INFO L470 AbstractCegarLoop]: Abstraction has 3514 states and 12512 transitions. [2021-10-06 21:03:16,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 12512 transitions. [2021-10-06 21:03:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:17,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:17,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:17,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:17,201 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 [2021-10-06 21:03:17,201 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:17,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:17,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1471730875, now seen corresponding path program 65 times [2021-10-06 21:03:17,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:17,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585559179] [2021-10-06 21:03:17,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:17,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:17,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:17,205 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) [2021-10-06 21:03:17,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:03:20,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:03:20,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:20,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:20,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:20,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:21,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:21,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585559179] [2021-10-06 21:03:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585559179] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:21,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:21,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:21,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255338895] [2021-10-06 21:03:21,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:21,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:21,799 INFO L87 Difference]: Start difference. First operand 3514 states and 12512 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:23,080 INFO L93 Difference]: Finished difference Result 6307 states and 21157 transitions. [2021-10-06 21:03:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:23,096 INFO L225 Difference]: With dead ends: 6307 [2021-10-06 21:03:23,096 INFO L226 Difference]: Without dead ends: 6290 [2021-10-06 21:03:23,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 991.3ms TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2021-10-06 21:03:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 3520. [2021-10-06 21:03:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3519 states have (on average 3.5586814435919294) internal successors, (12523), 3519 states have internal predecessors, (12523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 12523 transitions. [2021-10-06 21:03:23,182 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 12523 transitions. Word has length 41 [2021-10-06 21:03:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:23,182 INFO L470 AbstractCegarLoop]: Abstraction has 3520 states and 12523 transitions. [2021-10-06 21:03:23,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 12523 transitions. [2021-10-06 21:03:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:23,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:23,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:23,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:23,389 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 [2021-10-06 21:03:23,390 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:23,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1309648615, now seen corresponding path program 66 times [2021-10-06 21:03:23,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:23,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214983313] [2021-10-06 21:03:23,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:23,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:23,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:23,394 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) [2021-10-06 21:03:23,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:03:25,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:03:25,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:25,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:25,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:26,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:27,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:27,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214983313] [2021-10-06 21:03:27,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214983313] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:27,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:27,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:27,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706799948] [2021-10-06 21:03:27,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:27,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:27,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:27,699 INFO L87 Difference]: Start difference. First operand 3520 states and 12523 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:28,828 INFO L93 Difference]: Finished difference Result 6289 states and 21127 transitions. [2021-10-06 21:03:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:28,829 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:28,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:28,855 INFO L225 Difference]: With dead ends: 6289 [2021-10-06 21:03:28,855 INFO L226 Difference]: Without dead ends: 6256 [2021-10-06 21:03:28,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 986.9ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-10-06 21:03:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 3502. [2021-10-06 21:03:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 3501 states have (on average 3.5641245358469007) internal successors, (12478), 3501 states have internal predecessors, (12478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 12478 transitions. [2021-10-06 21:03:28,979 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 12478 transitions. Word has length 41 [2021-10-06 21:03:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:28,980 INFO L470 AbstractCegarLoop]: Abstraction has 3502 states and 12478 transitions. [2021-10-06 21:03:28,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 12478 transitions. [2021-10-06 21:03:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:28,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:28,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:29,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:29,187 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 [2021-10-06 21:03:29,188 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:29,188 INFO L82 PathProgramCache]: Analyzing trace with hash -445212681, now seen corresponding path program 67 times [2021-10-06 21:03:29,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:29,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394234391] [2021-10-06 21:03:29,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:29,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:29,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:29,191 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) [2021-10-06 21:03:29,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:03:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:31,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:31,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:32,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:33,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:33,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394234391] [2021-10-06 21:03:33,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394234391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:33,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:33,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:33,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279636390] [2021-10-06 21:03:33,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:33,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:33,796 INFO L87 Difference]: Start difference. First operand 3502 states and 12478 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:34,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:34,902 INFO L93 Difference]: Finished difference Result 6327 states and 21179 transitions. [2021-10-06 21:03:34,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:34,903 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:34,918 INFO L225 Difference]: With dead ends: 6327 [2021-10-06 21:03:34,919 INFO L226 Difference]: Without dead ends: 6310 [2021-10-06 21:03:34,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 993.1ms TimeCoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2021-10-06 21:03:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 3520. [2021-10-06 21:03:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3519 states have (on average 3.5586814435919294) internal successors, (12523), 3519 states have internal predecessors, (12523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 12523 transitions. [2021-10-06 21:03:35,014 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 12523 transitions. Word has length 41 [2021-10-06 21:03:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:35,014 INFO L470 AbstractCegarLoop]: Abstraction has 3520 states and 12523 transitions. [2021-10-06 21:03:35,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 12523 transitions. [2021-10-06 21:03:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:35,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:35,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:35,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-06 21:03:35,236 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 [2021-10-06 21:03:35,237 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:35,237 INFO L82 PathProgramCache]: Analyzing trace with hash -283130421, now seen corresponding path program 68 times [2021-10-06 21:03:35,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:35,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517230038] [2021-10-06 21:03:35,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:35,239 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:35,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:35,240 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) [2021-10-06 21:03:35,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:03:38,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:03:38,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:38,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:38,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:38,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:40,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:40,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517230038] [2021-10-06 21:03:40,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517230038] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:40,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:40,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:40,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439442919] [2021-10-06 21:03:40,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:40,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:40,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:40,176 INFO L87 Difference]: Start difference. First operand 3520 states and 12523 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:41,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:41,342 INFO L93 Difference]: Finished difference Result 6309 states and 21149 transitions. [2021-10-06 21:03:41,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:41,343 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:41,360 INFO L225 Difference]: With dead ends: 6309 [2021-10-06 21:03:41,360 INFO L226 Difference]: Without dead ends: 6288 [2021-10-06 21:03:41,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1003.4ms TimeCoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2021-10-06 21:03:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 3514. [2021-10-06 21:03:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3513 states have (on average 3.5599202960432677) internal successors, (12506), 3513 states have internal predecessors, (12506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 12506 transitions. [2021-10-06 21:03:41,446 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 12506 transitions. Word has length 41 [2021-10-06 21:03:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:41,446 INFO L470 AbstractCegarLoop]: Abstraction has 3514 states and 12506 transitions. [2021-10-06 21:03:41,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 12506 transitions. [2021-10-06 21:03:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:41,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:41,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:41,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:41,653 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 [2021-10-06 21:03:41,654 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:41,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1871613431, now seen corresponding path program 69 times [2021-10-06 21:03:41,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:41,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570814394] [2021-10-06 21:03:41,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:41,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:41,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:41,657 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) [2021-10-06 21:03:41,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:03:44,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:03:44,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:44,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:45,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:46,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:46,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570814394] [2021-10-06 21:03:46,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570814394] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:46,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:46,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:46,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504214028] [2021-10-06 21:03:46,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:46,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:46,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:46,420 INFO L87 Difference]: Start difference. First operand 3514 states and 12506 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:47,635 INFO L93 Difference]: Finished difference Result 6287 states and 21112 transitions. [2021-10-06 21:03:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:03:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:47,651 INFO L225 Difference]: With dead ends: 6287 [2021-10-06 21:03:47,651 INFO L226 Difference]: Without dead ends: 6200 [2021-10-06 21:03:47,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1005.6ms TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:03:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2021-10-06 21:03:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 3460. [2021-10-06 21:03:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3459 states have (on average 3.5718415727088755) internal successors, (12355), 3459 states have internal predecessors, (12355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 12355 transitions. [2021-10-06 21:03:47,735 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 12355 transitions. Word has length 41 [2021-10-06 21:03:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:47,735 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 12355 transitions. [2021-10-06 21:03:47,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 12355 transitions. [2021-10-06 21:03:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:47,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:47,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:47,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2021-10-06 21:03:47,943 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 [2021-10-06 21:03:47,944 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:47,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2056502887, now seen corresponding path program 70 times [2021-10-06 21:03:47,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:47,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731865490] [2021-10-06 21:03:47,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:47,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:47,947 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) [2021-10-06 21:03:47,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:03:50,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:50,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:50,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:50,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:51,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:52,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:52,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731865490] [2021-10-06 21:03:52,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731865490] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:52,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:52,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:52,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078782482] [2021-10-06 21:03:52,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:52,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:52,290 INFO L87 Difference]: Start difference. First operand 3460 states and 12355 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:53,703 INFO L93 Difference]: Finished difference Result 6225 states and 20924 transitions. [2021-10-06 21:03:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:03:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:53,719 INFO L225 Difference]: With dead ends: 6225 [2021-10-06 21:03:53,719 INFO L226 Difference]: Without dead ends: 6212 [2021-10-06 21:03:53,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1003.0ms TimeCoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:03:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6212 states. [2021-10-06 21:03:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6212 to 3476. [2021-10-06 21:03:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 3.570359712230216) internal successors, (12407), 3475 states have internal predecessors, (12407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 12407 transitions. [2021-10-06 21:03:53,807 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 12407 transitions. Word has length 41 [2021-10-06 21:03:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:53,808 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 12407 transitions. [2021-10-06 21:03:53,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 12407 transitions. [2021-10-06 21:03:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:53,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:53,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:53,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2021-10-06 21:03:54,015 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 [2021-10-06 21:03:54,015 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:03:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:54,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2100034439, now seen corresponding path program 71 times [2021-10-06 21:03:54,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:54,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390141938] [2021-10-06 21:03:54,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:54,018 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:54,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:54,019 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) [2021-10-06 21:03:54,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:03:56,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:03:56,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:56,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:03:56,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:57,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:57,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:58,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:58,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390141938] [2021-10-06 21:03:58,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390141938] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:58,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:58,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:03:58,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545067602] [2021-10-06 21:03:58,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:03:58,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:03:58,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:03:58,603 INFO L87 Difference]: Start difference. First operand 3476 states and 12407 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:59,867 INFO L93 Difference]: Finished difference Result 6229 states and 20928 transitions. [2021-10-06 21:03:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:03:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:03:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:59,884 INFO L225 Difference]: With dead ends: 6229 [2021-10-06 21:03:59,884 INFO L226 Difference]: Without dead ends: 6208 [2021-10-06 21:03:59,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 997.5ms TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:03:59,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2021-10-06 21:03:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 3472. [2021-10-06 21:03:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 3.571305099394987) internal successors, (12396), 3471 states have internal predecessors, (12396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 12396 transitions. [2021-10-06 21:03:59,970 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 12396 transitions. Word has length 41 [2021-10-06 21:03:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:59,970 INFO L470 AbstractCegarLoop]: Abstraction has 3472 states and 12396 transitions. [2021-10-06 21:03:59,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 12396 transitions. [2021-10-06 21:03:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:03:59,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:59,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:59,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:00,177 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 [2021-10-06 21:04:00,177 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:00,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1667009603, now seen corresponding path program 72 times [2021-10-06 21:04:00,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:00,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247611492] [2021-10-06 21:04:00,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:00,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:00,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:00,180 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) [2021-10-06 21:04:00,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:04:03,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:04:03,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:03,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:03,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:03,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:04,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:04,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247611492] [2021-10-06 21:04:04,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247611492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:04,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:04,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:04,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458291125] [2021-10-06 21:04:04,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:04,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:04,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:04,798 INFO L87 Difference]: Start difference. First operand 3472 states and 12396 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:05,889 INFO L93 Difference]: Finished difference Result 6199 states and 20878 transitions. [2021-10-06 21:04:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:04:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:05,904 INFO L225 Difference]: With dead ends: 6199 [2021-10-06 21:04:05,904 INFO L226 Difference]: Without dead ends: 6186 [2021-10-06 21:04:05,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 919.2ms TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-10-06 21:04:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 3476. [2021-10-06 21:04:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 3.5692086330935253) internal successors, (12403), 3475 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 12403 transitions. [2021-10-06 21:04:05,990 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 12403 transitions. Word has length 41 [2021-10-06 21:04:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:05,990 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 12403 transitions. [2021-10-06 21:04:05,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 12403 transitions. [2021-10-06 21:04:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:05,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:05,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:06,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:06,197 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 [2021-10-06 21:04:06,198 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:06,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:06,199 INFO L82 PathProgramCache]: Analyzing trace with hash 729641801, now seen corresponding path program 73 times [2021-10-06 21:04:06,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:06,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474397138] [2021-10-06 21:04:06,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:06,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:06,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:06,202 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) [2021-10-06 21:04:06,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:04:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:08,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:08,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:09,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:10,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:10,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474397138] [2021-10-06 21:04:10,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474397138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:10,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:10,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:10,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258802607] [2021-10-06 21:04:10,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:10,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:10,585 INFO L87 Difference]: Start difference. First operand 3476 states and 12403 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:11,787 INFO L93 Difference]: Finished difference Result 6201 states and 20878 transitions. [2021-10-06 21:04:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:04:11,787 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:11,803 INFO L225 Difference]: With dead ends: 6201 [2021-10-06 21:04:11,803 INFO L226 Difference]: Without dead ends: 6182 [2021-10-06 21:04:11,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 947.9ms TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2021-10-06 21:04:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 3472. [2021-10-06 21:04:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 3.5701526937481995) internal successors, (12392), 3471 states have internal predecessors, (12392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 12392 transitions. [2021-10-06 21:04:12,017 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 12392 transitions. Word has length 41 [2021-10-06 21:04:12,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:12,017 INFO L470 AbstractCegarLoop]: Abstraction has 3472 states and 12392 transitions. [2021-10-06 21:04:12,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 12392 transitions. [2021-10-06 21:04:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:12,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:12,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:12,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:12,224 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 [2021-10-06 21:04:12,225 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1188563647, now seen corresponding path program 74 times [2021-10-06 21:04:12,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:12,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623656109] [2021-10-06 21:04:12,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:12,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:12,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:12,229 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) [2021-10-06 21:04:12,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:04:15,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:04:15,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:15,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:15,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:16,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:16,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623656109] [2021-10-06 21:04:16,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623656109] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:16,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:16,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:16,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368596700] [2021-10-06 21:04:16,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:16,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:16,824 INFO L87 Difference]: Start difference. First operand 3472 states and 12392 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:18,046 INFO L93 Difference]: Finished difference Result 6229 states and 20923 transitions. [2021-10-06 21:04:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:04:18,047 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:18,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:18,062 INFO L225 Difference]: With dead ends: 6229 [2021-10-06 21:04:18,062 INFO L226 Difference]: Without dead ends: 6212 [2021-10-06 21:04:18,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 932.3ms TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6212 states. [2021-10-06 21:04:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6212 to 3478. [2021-10-06 21:04:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 3.5671555939027897) internal successors, (12403), 3477 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 12403 transitions. [2021-10-06 21:04:18,166 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 12403 transitions. Word has length 41 [2021-10-06 21:04:18,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:18,166 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 12403 transitions. [2021-10-06 21:04:18,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 12403 transitions. [2021-10-06 21:04:18,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:18,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:18,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:18,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:18,373 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 [2021-10-06 21:04:18,373 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:18,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:18,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1889518439, now seen corresponding path program 75 times [2021-10-06 21:04:18,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:18,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835699762] [2021-10-06 21:04:18,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:04:18,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:18,377 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) [2021-10-06 21:04:18,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:04:21,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:04:21,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:21,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:21,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:22,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:23,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:23,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835699762] [2021-10-06 21:04:23,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835699762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:23,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:23,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:23,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369540756] [2021-10-06 21:04:23,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:23,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:23,097 INFO L87 Difference]: Start difference. First operand 3478 states and 12403 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:24,394 INFO L93 Difference]: Finished difference Result 6221 states and 20902 transitions. [2021-10-06 21:04:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:04:24,395 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:24,411 INFO L225 Difference]: With dead ends: 6221 [2021-10-06 21:04:24,411 INFO L226 Difference]: Without dead ends: 6196 [2021-10-06 21:04:24,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 934.9ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2021-10-06 21:04:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 3468. [2021-10-06 21:04:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3467 states have (on average 3.5710989327949236) internal successors, (12381), 3467 states have internal predecessors, (12381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 12381 transitions. [2021-10-06 21:04:24,498 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 12381 transitions. Word has length 41 [2021-10-06 21:04:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:24,498 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 12381 transitions. [2021-10-06 21:04:24,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 12381 transitions. [2021-10-06 21:04:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:24,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:24,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:24,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:24,705 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 [2021-10-06 21:04:24,706 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:24,707 INFO L82 PathProgramCache]: Analyzing trace with hash -471819689, now seen corresponding path program 76 times [2021-10-06 21:04:24,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:24,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828333772] [2021-10-06 21:04:24,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:04:24,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:24,710 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) [2021-10-06 21:04:24,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:04:27,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:04:27,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:27,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:27,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:28,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:29,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:29,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828333772] [2021-10-06 21:04:29,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828333772] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:29,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:29,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:29,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522583984] [2021-10-06 21:04:29,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:29,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:29,598 INFO L87 Difference]: Start difference. First operand 3468 states and 12381 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:30,960 INFO L93 Difference]: Finished difference Result 6165 states and 20808 transitions. [2021-10-06 21:04:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:04:30,961 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:30,976 INFO L225 Difference]: With dead ends: 6165 [2021-10-06 21:04:30,976 INFO L226 Difference]: Without dead ends: 6152 [2021-10-06 21:04:30,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 986.5ms TimeCoverageRelationStatistics Valid=316, Invalid=1016, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:04:30,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6152 states. [2021-10-06 21:04:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6152 to 3480. [2021-10-06 21:04:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3480 states, 3479 states have (on average 3.5671169876401265) internal successors, (12410), 3479 states have internal predecessors, (12410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 12410 transitions. [2021-10-06 21:04:31,064 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 12410 transitions. Word has length 41 [2021-10-06 21:04:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:31,064 INFO L470 AbstractCegarLoop]: Abstraction has 3480 states and 12410 transitions. [2021-10-06 21:04:31,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 12410 transitions. [2021-10-06 21:04:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:31,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:31,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:31,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:31,273 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 [2021-10-06 21:04:31,273 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:31,274 INFO L82 PathProgramCache]: Analyzing trace with hash -610249659, now seen corresponding path program 77 times [2021-10-06 21:04:31,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:31,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716100928] [2021-10-06 21:04:31,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:31,275 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:31,276 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) [2021-10-06 21:04:31,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:04:34,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:04:34,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:34,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:34,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:35,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:36,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:36,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716100928] [2021-10-06 21:04:36,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716100928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:36,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:36,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:36,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457941270] [2021-10-06 21:04:36,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:36,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:36,059 INFO L87 Difference]: Start difference. First operand 3480 states and 12410 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:37,262 INFO L93 Difference]: Finished difference Result 6169 states and 20812 transitions. [2021-10-06 21:04:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:04:37,262 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:37,278 INFO L225 Difference]: With dead ends: 6169 [2021-10-06 21:04:37,279 INFO L226 Difference]: Without dead ends: 6148 [2021-10-06 21:04:37,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 971.7ms TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:04:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2021-10-06 21:04:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 3476. [2021-10-06 21:04:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 3.5680575539568347) internal successors, (12399), 3475 states have internal predecessors, (12399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 12399 transitions. [2021-10-06 21:04:37,366 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 12399 transitions. Word has length 41 [2021-10-06 21:04:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:37,367 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 12399 transitions. [2021-10-06 21:04:37,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 12399 transitions. [2021-10-06 21:04:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:37,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:37,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:37,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:37,575 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 [2021-10-06 21:04:37,575 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:37,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1450551873, now seen corresponding path program 78 times [2021-10-06 21:04:37,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:37,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134788409] [2021-10-06 21:04:37,577 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:37,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:37,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:37,578 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) [2021-10-06 21:04:37,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:04:40,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:04:40,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:40,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:40,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:41,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:42,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:42,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134788409] [2021-10-06 21:04:42,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134788409] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:42,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:42,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:42,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994223191] [2021-10-06 21:04:42,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:42,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:42,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:42,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:42,379 INFO L87 Difference]: Start difference. First operand 3476 states and 12399 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:43,496 INFO L93 Difference]: Finished difference Result 6173 states and 20816 transitions. [2021-10-06 21:04:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:04:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:43,512 INFO L225 Difference]: With dead ends: 6173 [2021-10-06 21:04:43,512 INFO L226 Difference]: Without dead ends: 6132 [2021-10-06 21:04:43,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 981.1ms TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:43,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2021-10-06 21:04:43,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 3468. [2021-10-06 21:04:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3467 states have (on average 3.5687914623593886) internal successors, (12373), 3467 states have internal predecessors, (12373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:43,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 12373 transitions. [2021-10-06 21:04:43,598 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 12373 transitions. Word has length 41 [2021-10-06 21:04:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:43,599 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 12373 transitions. [2021-10-06 21:04:43,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 12373 transitions. [2021-10-06 21:04:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:43,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:43,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:43,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:43,805 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 [2021-10-06 21:04:43,806 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:43,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1468128505, now seen corresponding path program 79 times [2021-10-06 21:04:43,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:43,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158923783] [2021-10-06 21:04:43,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:43,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:43,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:43,809 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) [2021-10-06 21:04:43,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:04:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:46,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:46,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:47,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:48,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:48,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158923783] [2021-10-06 21:04:48,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158923783] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:48,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:48,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:48,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153504511] [2021-10-06 21:04:48,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:48,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:48,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:48,461 INFO L87 Difference]: Start difference. First operand 3468 states and 12373 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:49,701 INFO L93 Difference]: Finished difference Result 6223 states and 20896 transitions. [2021-10-06 21:04:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:04:49,702 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:49,717 INFO L225 Difference]: With dead ends: 6223 [2021-10-06 21:04:49,717 INFO L226 Difference]: Without dead ends: 6206 [2021-10-06 21:04:49,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 996.9ms TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:49,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6206 states. [2021-10-06 21:04:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6206 to 3486. [2021-10-06 21:04:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3485 states have (on average 3.563271162123386) internal successors, (12418), 3485 states have internal predecessors, (12418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 12418 transitions. [2021-10-06 21:04:49,802 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 12418 transitions. Word has length 41 [2021-10-06 21:04:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:49,802 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 12418 transitions. [2021-10-06 21:04:49,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 12418 transitions. [2021-10-06 21:04:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:49,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:49,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:49,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:50,009 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 [2021-10-06 21:04:50,010 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:50,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:50,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2125883999, now seen corresponding path program 80 times [2021-10-06 21:04:50,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:50,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644768453] [2021-10-06 21:04:50,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:50,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:50,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:50,013 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) [2021-10-06 21:04:50,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:04:53,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:04:53,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:53,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:53,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:53,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:54,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:54,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644768453] [2021-10-06 21:04:54,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644768453] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:54,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:54,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:04:54,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44272865] [2021-10-06 21:04:54,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:04:54,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:04:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:04:54,990 INFO L87 Difference]: Start difference. First operand 3486 states and 12418 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:56,168 INFO L93 Difference]: Finished difference Result 6205 states and 20866 transitions. [2021-10-06 21:04:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:04:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:04:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:56,184 INFO L225 Difference]: With dead ends: 6205 [2021-10-06 21:04:56,185 INFO L226 Difference]: Without dead ends: 6184 [2021-10-06 21:04:56,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 966.8ms TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:04:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6184 states. [2021-10-06 21:04:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6184 to 3480. [2021-10-06 21:04:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3480 states, 3479 states have (on average 3.5645300373670596) internal successors, (12401), 3479 states have internal predecessors, (12401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 12401 transitions. [2021-10-06 21:04:56,270 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 12401 transitions. Word has length 41 [2021-10-06 21:04:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:56,270 INFO L470 AbstractCegarLoop]: Abstraction has 3480 states and 12401 transitions. [2021-10-06 21:04:56,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 12401 transitions. [2021-10-06 21:04:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:04:56,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:56,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:56,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:56,477 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 [2021-10-06 21:04:56,478 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:04:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash -317877435, now seen corresponding path program 81 times [2021-10-06 21:04:56,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:56,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918998891] [2021-10-06 21:04:56,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:04:56,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:56,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:56,481 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) [2021-10-06 21:04:56,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:04:59,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:04:59,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:59,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:04:59,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:00,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:01,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:01,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918998891] [2021-10-06 21:05:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918998891] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:01,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:01,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:05:01,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59803022] [2021-10-06 21:05:01,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:05:01,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:05:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:01,395 INFO L87 Difference]: Start difference. First operand 3480 states and 12401 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:02,557 INFO L93 Difference]: Finished difference Result 6193 states and 20838 transitions. [2021-10-06 21:05:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:02,558 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:02,573 INFO L225 Difference]: With dead ends: 6193 [2021-10-06 21:05:02,573 INFO L226 Difference]: Without dead ends: 6112 [2021-10-06 21:05:02,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1114.5ms TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2021-10-06 21:05:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 3432. [2021-10-06 21:05:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 3431 states have (on average 3.5808802098513555) internal successors, (12286), 3431 states have internal predecessors, (12286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 12286 transitions. [2021-10-06 21:05:02,657 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 12286 transitions. Word has length 41 [2021-10-06 21:05:02,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:02,657 INFO L470 AbstractCegarLoop]: Abstraction has 3432 states and 12286 transitions. [2021-10-06 21:05:02,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 12286 transitions. [2021-10-06 21:05:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:02,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:02,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:02,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:02,864 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 [2021-10-06 21:05:02,864 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1696971431, now seen corresponding path program 82 times [2021-10-06 21:05:02,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:02,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750575688] [2021-10-06 21:05:02,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:02,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:02,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:02,867 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) [2021-10-06 21:05:02,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-06 21:05:05,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:05,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:05,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:06,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:06,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:07,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:07,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750575688] [2021-10-06 21:05:07,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750575688] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:07,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:07,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:05:07,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466797236] [2021-10-06 21:05:07,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:05:07,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:07,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:05:07,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:07,764 INFO L87 Difference]: Start difference. First operand 3432 states and 12286 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:08,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:08,843 INFO L93 Difference]: Finished difference Result 6243 states and 20969 transitions. [2021-10-06 21:05:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:08,844 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:08,860 INFO L225 Difference]: With dead ends: 6243 [2021-10-06 21:05:08,860 INFO L226 Difference]: Without dead ends: 6216 [2021-10-06 21:05:08,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 981.8ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2021-10-06 21:05:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 3510. [2021-10-06 21:05:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 3.554003989740667) internal successors, (12471), 3509 states have internal predecessors, (12471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 12471 transitions. [2021-10-06 21:05:08,947 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 12471 transitions. Word has length 41 [2021-10-06 21:05:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:08,947 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 12471 transitions. [2021-10-06 21:05:08,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 12471 transitions. [2021-10-06 21:05:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:08,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:08,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:08,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:09,155 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 [2021-10-06 21:05:09,156 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1948767969, now seen corresponding path program 83 times [2021-10-06 21:05:09,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:09,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197471037] [2021-10-06 21:05:09,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:09,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:09,159 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) [2021-10-06 21:05:09,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-06 21:05:12,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:05:12,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:12,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:12,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:13,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:14,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:14,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197471037] [2021-10-06 21:05:14,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197471037] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:14,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:14,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:05:14,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509468288] [2021-10-06 21:05:14,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:05:14,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:05:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:14,015 INFO L87 Difference]: Start difference. First operand 3510 states and 12471 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:15,105 INFO L93 Difference]: Finished difference Result 6255 states and 20976 transitions. [2021-10-06 21:05:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:15,105 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:15,121 INFO L225 Difference]: With dead ends: 6255 [2021-10-06 21:05:15,121 INFO L226 Difference]: Without dead ends: 6238 [2021-10-06 21:05:15,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 961.1ms TimeCoverageRelationStatistics Valid=344, Invalid=846, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:15,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2021-10-06 21:05:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 3516. [2021-10-06 21:05:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3515 states have (on average 3.551066856330014) internal successors, (12482), 3515 states have internal predecessors, (12482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 12482 transitions. [2021-10-06 21:05:15,211 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 12482 transitions. Word has length 41 [2021-10-06 21:05:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:15,211 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 12482 transitions. [2021-10-06 21:05:15,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 12482 transitions. [2021-10-06 21:05:15,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:15,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:15,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:15,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:15,418 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 [2021-10-06 21:05:15,418 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:15,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2110850229, now seen corresponding path program 84 times [2021-10-06 21:05:15,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:15,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31341527] [2021-10-06 21:05:15,420 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:15,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:15,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:15,422 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) [2021-10-06 21:05:15,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-06 21:05:18,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:05:18,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:19,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:19,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:19,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:20,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:20,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31341527] [2021-10-06 21:05:20,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31341527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:20,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:20,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:05:20,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164241591] [2021-10-06 21:05:20,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:05:20,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:05:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:20,706 INFO L87 Difference]: Start difference. First operand 3516 states and 12482 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:21,839 INFO L93 Difference]: Finished difference Result 6237 states and 20946 transitions. [2021-10-06 21:05:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:21,839 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:21,855 INFO L225 Difference]: With dead ends: 6237 [2021-10-06 21:05:21,855 INFO L226 Difference]: Without dead ends: 6204 [2021-10-06 21:05:21,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 959.7ms TimeCoverageRelationStatistics Valid=338, Invalid=852, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6204 states. [2021-10-06 21:05:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6204 to 3498. [2021-10-06 21:05:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 3.5564769802688017) internal successors, (12437), 3497 states have internal predecessors, (12437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 12437 transitions. [2021-10-06 21:05:21,940 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 12437 transitions. Word has length 41 [2021-10-06 21:05:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:21,941 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 12437 transitions. [2021-10-06 21:05:21,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 12437 transitions. [2021-10-06 21:05:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:21,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:21,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:21,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:22,150 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 [2021-10-06 21:05:22,150 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1319681133, now seen corresponding path program 85 times [2021-10-06 21:05:22,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:22,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607646375] [2021-10-06 21:05:22,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:22,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:22,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:22,154 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) [2021-10-06 21:05:22,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-06 21:05:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:25,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:25,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:25,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:27,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:27,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607646375] [2021-10-06 21:05:27,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607646375] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:27,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:27,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:05:27,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098985178] [2021-10-06 21:05:27,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:05:27,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:27,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:05:27,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:27,059 INFO L87 Difference]: Start difference. First operand 3498 states and 12437 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:28,017 INFO L93 Difference]: Finished difference Result 6247 states and 20934 transitions. [2021-10-06 21:05:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:28,017 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:28,035 INFO L225 Difference]: With dead ends: 6247 [2021-10-06 21:05:28,036 INFO L226 Difference]: Without dead ends: 6230 [2021-10-06 21:05:28,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 972.4ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2021-10-06 21:05:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 3516. [2021-10-06 21:05:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3515 states have (on average 3.551066856330014) internal successors, (12482), 3515 states have internal predecessors, (12482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 12482 transitions. [2021-10-06 21:05:28,123 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 12482 transitions. Word has length 41 [2021-10-06 21:05:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:28,123 INFO L470 AbstractCegarLoop]: Abstraction has 3516 states and 12482 transitions. [2021-10-06 21:05:28,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 12482 transitions. [2021-10-06 21:05:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:28,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:28,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:28,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:28,330 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 [2021-10-06 21:05:28,330 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:28,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:28,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1157598873, now seen corresponding path program 86 times [2021-10-06 21:05:28,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:28,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688873108] [2021-10-06 21:05:28,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:05:28,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:28,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:28,333 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) [2021-10-06 21:05:28,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-06 21:05:31,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:05:31,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:31,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:31,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:32,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:33,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:33,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688873108] [2021-10-06 21:05:33,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688873108] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:33,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:33,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:05:33,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143422799] [2021-10-06 21:05:33,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:05:33,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:33,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:05:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:33,677 INFO L87 Difference]: Start difference. First operand 3516 states and 12482 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:34,632 INFO L93 Difference]: Finished difference Result 6229 states and 20904 transitions. [2021-10-06 21:05:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:34,648 INFO L225 Difference]: With dead ends: 6229 [2021-10-06 21:05:34,648 INFO L226 Difference]: Without dead ends: 6208 [2021-10-06 21:05:34,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 957.1ms TimeCoverageRelationStatistics Valid=338, Invalid=852, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:34,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2021-10-06 21:05:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 3510. [2021-10-06 21:05:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 3.5522941008834428) internal successors, (12465), 3509 states have internal predecessors, (12465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 12465 transitions. [2021-10-06 21:05:34,737 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 12465 transitions. Word has length 41 [2021-10-06 21:05:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:34,737 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 12465 transitions. [2021-10-06 21:05:34,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 12465 transitions. [2021-10-06 21:05:34,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:34,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:34,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:34,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:34,945 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 [2021-10-06 21:05:34,945 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash 997144979, now seen corresponding path program 87 times [2021-10-06 21:05:34,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:34,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536861423] [2021-10-06 21:05:34,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:34,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:34,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:34,949 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) [2021-10-06 21:05:34,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-06 21:05:38,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:05:38,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:38,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:38,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:38,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:40,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:40,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536861423] [2021-10-06 21:05:40,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536861423] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:40,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:40,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-10-06 21:05:40,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828294613] [2021-10-06 21:05:40,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 21:05:40,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 21:05:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:05:40,058 INFO L87 Difference]: Start difference. First operand 3510 states and 12465 transitions. Second operand has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:41,118 INFO L93 Difference]: Finished difference Result 6207 states and 20867 transitions. [2021-10-06 21:05:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:41,119 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:41,136 INFO L225 Difference]: With dead ends: 6207 [2021-10-06 21:05:41,136 INFO L226 Difference]: Without dead ends: 6058 [2021-10-06 21:05:41,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 988.1ms TimeCoverageRelationStatistics Valid=344, Invalid=846, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:05:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6058 states. [2021-10-06 21:05:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6058 to 3394. [2021-10-06 21:05:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.5885646920129677) internal successors, (12176), 3393 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 12176 transitions. [2021-10-06 21:05:41,222 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 12176 transitions. Word has length 41 [2021-10-06 21:05:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:41,222 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 12176 transitions. [2021-10-06 21:05:41,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 12176 transitions. [2021-10-06 21:05:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:41,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:41,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:41,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:41,430 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 [2021-10-06 21:05:41,431 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:41,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1728481049, now seen corresponding path program 88 times [2021-10-06 21:05:41,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:41,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495431549] [2021-10-06 21:05:41,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:41,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:41,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:41,434 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) [2021-10-06 21:05:41,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-06 21:05:45,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:45,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:45,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:45,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:45,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:46,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:46,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495431549] [2021-10-06 21:05:46,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495431549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:46,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:46,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:05:46,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29643970] [2021-10-06 21:05:46,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:05:46,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:46,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:05:46,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:05:46,932 INFO L87 Difference]: Start difference. First operand 3394 states and 12176 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:48,123 INFO L93 Difference]: Finished difference Result 6247 states and 21136 transitions. [2021-10-06 21:05:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:48,123 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:48,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:48,139 INFO L225 Difference]: With dead ends: 6247 [2021-10-06 21:05:48,139 INFO L226 Difference]: Without dead ends: 6220 [2021-10-06 21:05:48,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1066.9ms TimeCoverageRelationStatistics Valid=368, Invalid=892, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:05:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6220 states. [2021-10-06 21:05:48,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6220 to 3536. [2021-10-06 21:05:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 3.551060820367751) internal successors, (12553), 3535 states have internal predecessors, (12553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 12553 transitions. [2021-10-06 21:05:48,230 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 12553 transitions. Word has length 41 [2021-10-06 21:05:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:48,230 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 12553 transitions. [2021-10-06 21:05:48,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 12553 transitions. [2021-10-06 21:05:48,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:48,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:48,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:48,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:48,437 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 [2021-10-06 21:05:48,437 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:48,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1476684511, now seen corresponding path program 89 times [2021-10-06 21:05:48,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:48,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426251330] [2021-10-06 21:05:48,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:48,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:48,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:48,441 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) [2021-10-06 21:05:48,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-06 21:05:52,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:05:52,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:52,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:52,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:52,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:53,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:53,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426251330] [2021-10-06 21:05:53,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426251330] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:53,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:53,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:05:53,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612780227] [2021-10-06 21:05:53,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:05:53,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:53,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:05:53,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:05:53,980 INFO L87 Difference]: Start difference. First operand 3536 states and 12553 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:55,001 INFO L93 Difference]: Finished difference Result 6259 states and 21143 transitions. [2021-10-06 21:05:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:05:55,002 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:05:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:55,017 INFO L225 Difference]: With dead ends: 6259 [2021-10-06 21:05:55,017 INFO L226 Difference]: Without dead ends: 6242 [2021-10-06 21:05:55,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1027.0ms TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:05:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2021-10-06 21:05:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 3542. [2021-10-06 21:05:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3541 states have (on average 3.5481502400451848) internal successors, (12564), 3541 states have internal predecessors, (12564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 12564 transitions. [2021-10-06 21:05:55,104 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 12564 transitions. Word has length 41 [2021-10-06 21:05:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:55,104 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 12564 transitions. [2021-10-06 21:05:55,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 12564 transitions. [2021-10-06 21:05:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:05:55,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:55,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:55,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:55,311 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 [2021-10-06 21:05:55,312 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:05:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:55,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1314602251, now seen corresponding path program 90 times [2021-10-06 21:05:55,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:55,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676125572] [2021-10-06 21:05:55,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:55,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:55,316 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) [2021-10-06 21:05:55,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-06 21:05:59,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:05:59,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:59,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:05:59,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:59,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:01,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:01,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676125572] [2021-10-06 21:06:01,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676125572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:01,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:01,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:01,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340771775] [2021-10-06 21:06:01,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:01,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:01,025 INFO L87 Difference]: Start difference. First operand 3542 states and 12564 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:02,227 INFO L93 Difference]: Finished difference Result 6241 states and 21113 transitions. [2021-10-06 21:06:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:02,228 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:02,244 INFO L225 Difference]: With dead ends: 6241 [2021-10-06 21:06:02,245 INFO L226 Difference]: Without dead ends: 6208 [2021-10-06 21:06:02,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1034.0ms TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2021-10-06 21:06:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 3524. [2021-10-06 21:06:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 3523 states have (on average 3.5535055350553506) internal successors, (12519), 3523 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 12519 transitions. [2021-10-06 21:06:02,332 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 12519 transitions. Word has length 41 [2021-10-06 21:06:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:02,333 INFO L470 AbstractCegarLoop]: Abstraction has 3524 states and 12519 transitions. [2021-10-06 21:06:02,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 12519 transitions. [2021-10-06 21:06:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:02,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:02,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:02,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:02,540 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 [2021-10-06 21:06:02,540 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:02,541 INFO L82 PathProgramCache]: Analyzing trace with hash -450166317, now seen corresponding path program 91 times [2021-10-06 21:06:02,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:02,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195201780] [2021-10-06 21:06:02,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:06:02,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:02,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:02,543 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) [2021-10-06 21:06:02,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-06 21:06:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:06:06,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:06,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:06,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:08,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:08,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195201780] [2021-10-06 21:06:08,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195201780] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:08,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:08,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:08,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101786703] [2021-10-06 21:06:08,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:08,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:08,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:08,252 INFO L87 Difference]: Start difference. First operand 3524 states and 12519 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:09,391 INFO L93 Difference]: Finished difference Result 6251 states and 21111 transitions. [2021-10-06 21:06:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:09,391 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:09,407 INFO L225 Difference]: With dead ends: 6251 [2021-10-06 21:06:09,407 INFO L226 Difference]: Without dead ends: 6234 [2021-10-06 21:06:09,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1042.6ms TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-10-06 21:06:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 3542. [2021-10-06 21:06:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3541 states have (on average 3.5481502400451848) internal successors, (12564), 3541 states have internal predecessors, (12564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 12564 transitions. [2021-10-06 21:06:09,572 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 12564 transitions. Word has length 41 [2021-10-06 21:06:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:09,572 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 12564 transitions. [2021-10-06 21:06:09,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 12564 transitions. [2021-10-06 21:06:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:09,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:09,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:09,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2021-10-06 21:06:09,779 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 [2021-10-06 21:06:09,780 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:09,782 INFO L82 PathProgramCache]: Analyzing trace with hash -288084057, now seen corresponding path program 92 times [2021-10-06 21:06:09,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:09,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221227071] [2021-10-06 21:06:09,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:09,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:09,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:09,784 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) [2021-10-06 21:06:09,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-06 21:06:13,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:06:13,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:13,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:13,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:13,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:15,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:15,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221227071] [2021-10-06 21:06:15,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221227071] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:15,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:15,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:15,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945875048] [2021-10-06 21:06:15,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:15,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:15,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:15,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:15,269 INFO L87 Difference]: Start difference. First operand 3542 states and 12564 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:16,356 INFO L93 Difference]: Finished difference Result 6233 states and 21081 transitions. [2021-10-06 21:06:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:16,372 INFO L225 Difference]: With dead ends: 6233 [2021-10-06 21:06:16,372 INFO L226 Difference]: Without dead ends: 6212 [2021-10-06 21:06:16,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1024.1ms TimeCoverageRelationStatistics Valid=370, Invalid=890, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6212 states. [2021-10-06 21:06:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6212 to 3536. [2021-10-06 21:06:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 3.5493635077793493) internal successors, (12547), 3535 states have internal predecessors, (12547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 12547 transitions. [2021-10-06 21:06:16,459 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 12547 transitions. Word has length 41 [2021-10-06 21:06:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:16,460 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 12547 transitions. [2021-10-06 21:06:16,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 12547 transitions. [2021-10-06 21:06:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:16,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:16,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:16,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:16,667 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 [2021-10-06 21:06:16,667 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1866659795, now seen corresponding path program 93 times [2021-10-06 21:06:16,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:16,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30920442] [2021-10-06 21:06:16,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:16,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:16,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:16,671 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) [2021-10-06 21:06:16,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-06 21:06:20,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:06:20,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:20,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:20,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:20,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:22,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:22,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30920442] [2021-10-06 21:06:22,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30920442] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:22,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:22,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:22,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271950331] [2021-10-06 21:06:22,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:22,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:22,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:22,227 INFO L87 Difference]: Start difference. First operand 3536 states and 12547 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:23,285 INFO L93 Difference]: Finished difference Result 6211 states and 21044 transitions. [2021-10-06 21:06:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:23,286 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:23,301 INFO L225 Difference]: With dead ends: 6211 [2021-10-06 21:06:23,301 INFO L226 Difference]: Without dead ends: 6096 [2021-10-06 21:06:23,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1183.7ms TimeCoverageRelationStatistics Valid=372, Invalid=888, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2021-10-06 21:06:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 3454. [2021-10-06 21:06:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3453 states have (on average 3.574283231972198) internal successors, (12342), 3453 states have internal predecessors, (12342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 12342 transitions. [2021-10-06 21:06:23,388 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 12342 transitions. Word has length 41 [2021-10-06 21:06:23,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:23,388 INFO L470 AbstractCegarLoop]: Abstraction has 3454 states and 12342 transitions. [2021-10-06 21:06:23,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 12342 transitions. [2021-10-06 21:06:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:23,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:23,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:23,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:23,595 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 [2021-10-06 21:06:23,595 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:23,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:23,596 INFO L82 PathProgramCache]: Analyzing trace with hash 974886227, now seen corresponding path program 94 times [2021-10-06 21:06:23,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:23,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787606583] [2021-10-06 21:06:23,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:06:23,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:23,598 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) [2021-10-06 21:06:23,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-06 21:06:27,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:06:27,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:27,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:27,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:27,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:29,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:29,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787606583] [2021-10-06 21:06:29,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787606583] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:29,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:29,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:29,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85284700] [2021-10-06 21:06:29,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:29,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:29,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:29,193 INFO L87 Difference]: Start difference. First operand 3454 states and 12342 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:30,524 INFO L93 Difference]: Finished difference Result 6331 states and 21359 transitions. [2021-10-06 21:06:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:30,524 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:30,540 INFO L225 Difference]: With dead ends: 6331 [2021-10-06 21:06:30,541 INFO L226 Difference]: Without dead ends: 6304 [2021-10-06 21:06:30,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1069.5ms TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2021-10-06 21:06:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 3498. [2021-10-06 21:06:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 3.5696311123820417) internal successors, (12483), 3497 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 12483 transitions. [2021-10-06 21:06:30,629 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 12483 transitions. Word has length 41 [2021-10-06 21:06:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:30,629 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 12483 transitions. [2021-10-06 21:06:30,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 12483 transitions. [2021-10-06 21:06:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:30,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:30,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:30,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:30,836 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 [2021-10-06 21:06:30,837 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 467914655, now seen corresponding path program 95 times [2021-10-06 21:06:30,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:30,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742075205] [2021-10-06 21:06:30,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:06:30,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:30,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:30,840 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) [2021-10-06 21:06:30,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-06 21:06:34,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:06:34,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:34,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:34,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:35,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:36,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:36,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742075205] [2021-10-06 21:06:36,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742075205] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:36,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:36,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:36,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472073043] [2021-10-06 21:06:36,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:36,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:36,310 INFO L87 Difference]: Start difference. First operand 3498 states and 12483 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:37,631 INFO L93 Difference]: Finished difference Result 6321 states and 21336 transitions. [2021-10-06 21:06:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:37,631 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:37,647 INFO L225 Difference]: With dead ends: 6321 [2021-10-06 21:06:37,647 INFO L226 Difference]: Without dead ends: 6308 [2021-10-06 21:06:37,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1043.7ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2021-10-06 21:06:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 3502. [2021-10-06 21:06:37,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 3501 states have (on average 3.567552127963439) internal successors, (12490), 3501 states have internal predecessors, (12490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 12490 transitions. [2021-10-06 21:06:37,734 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 12490 transitions. Word has length 41 [2021-10-06 21:06:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:37,734 INFO L470 AbstractCegarLoop]: Abstraction has 3502 states and 12490 transitions. [2021-10-06 21:06:37,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 12490 transitions. [2021-10-06 21:06:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:37,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:37,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:37,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:37,941 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 [2021-10-06 21:06:37,942 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash -469453147, now seen corresponding path program 96 times [2021-10-06 21:06:37,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:37,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439709057] [2021-10-06 21:06:37,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:06:37,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:37,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:37,945 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) [2021-10-06 21:06:37,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-06 21:06:41,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:06:41,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:41,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:41,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:42,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:43,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:43,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439709057] [2021-10-06 21:06:43,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439709057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:43,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:43,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:43,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624368283] [2021-10-06 21:06:43,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:43,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:43,692 INFO L87 Difference]: Start difference. First operand 3502 states and 12490 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:44,963 INFO L93 Difference]: Finished difference Result 6323 states and 21336 transitions. [2021-10-06 21:06:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:44,964 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:44,980 INFO L225 Difference]: With dead ends: 6323 [2021-10-06 21:06:44,981 INFO L226 Difference]: Without dead ends: 6296 [2021-10-06 21:06:44,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1039.3ms TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2021-10-06 21:06:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 3490. [2021-10-06 21:06:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 3.571510461450272) internal successors, (12461), 3489 states have internal predecessors, (12461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 12461 transitions. [2021-10-06 21:06:45,066 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 12461 transitions. Word has length 41 [2021-10-06 21:06:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:45,066 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 12461 transitions. [2021-10-06 21:06:45,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 12461 transitions. [2021-10-06 21:06:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:45,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:45,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:45,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:45,273 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 [2021-10-06 21:06:45,274 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash -462753515, now seen corresponding path program 97 times [2021-10-06 21:06:45,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:45,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809192623] [2021-10-06 21:06:45,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:06:45,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:45,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:45,277 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) [2021-10-06 21:06:45,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-06 21:06:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:06:49,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:49,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:49,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:51,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:51,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809192623] [2021-10-06 21:06:51,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809192623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:51,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:51,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:51,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185091860] [2021-10-06 21:06:51,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:51,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:51,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:51,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:51,041 INFO L87 Difference]: Start difference. First operand 3490 states and 12461 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:52,361 INFO L93 Difference]: Finished difference Result 6365 states and 21415 transitions. [2021-10-06 21:06:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:52,362 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:52,379 INFO L225 Difference]: With dead ends: 6365 [2021-10-06 21:06:52,379 INFO L226 Difference]: Without dead ends: 6338 [2021-10-06 21:06:52,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1096.1ms TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2021-10-06 21:06:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 3502. [2021-10-06 21:06:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 3501 states have (on average 3.5655526992287916) internal successors, (12483), 3501 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 12483 transitions. [2021-10-06 21:06:52,468 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 12483 transitions. Word has length 41 [2021-10-06 21:06:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:52,468 INFO L470 AbstractCegarLoop]: Abstraction has 3502 states and 12483 transitions. [2021-10-06 21:06:52,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 12483 transitions. [2021-10-06 21:06:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:52,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:52,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:52,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:52,675 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 [2021-10-06 21:06:52,676 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:52,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:52,676 INFO L82 PathProgramCache]: Analyzing trace with hash -210956977, now seen corresponding path program 98 times [2021-10-06 21:06:52,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:52,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596550697] [2021-10-06 21:06:52,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:52,678 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:52,680 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) [2021-10-06 21:06:52,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-06 21:06:56,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:06:56,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:56,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:06:56,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:57,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:58,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:58,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596550697] [2021-10-06 21:06:58,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596550697] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:58,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:58,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:06:58,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560523785] [2021-10-06 21:06:58,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:06:58,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:06:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:06:58,305 INFO L87 Difference]: Start difference. First operand 3502 states and 12483 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:59,401 INFO L93 Difference]: Finished difference Result 6361 states and 21402 transitions. [2021-10-06 21:06:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:06:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:06:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:59,417 INFO L225 Difference]: With dead ends: 6361 [2021-10-06 21:06:59,417 INFO L226 Difference]: Without dead ends: 6344 [2021-10-06 21:06:59,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1044.9ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:06:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2021-10-06 21:06:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 3508. [2021-10-06 21:06:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3508 states, 3507 states have (on average 3.5625891074992873) internal successors, (12494), 3507 states have internal predecessors, (12494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 12494 transitions. [2021-10-06 21:06:59,504 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 12494 transitions. Word has length 41 [2021-10-06 21:06:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:59,504 INFO L470 AbstractCegarLoop]: Abstraction has 3508 states and 12494 transitions. [2021-10-06 21:06:59,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 12494 transitions. [2021-10-06 21:06:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:06:59,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:59,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:59,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:59,719 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 [2021-10-06 21:06:59,720 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:06:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:59,720 INFO L82 PathProgramCache]: Analyzing trace with hash -48874717, now seen corresponding path program 99 times [2021-10-06 21:06:59,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:59,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902614282] [2021-10-06 21:06:59,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:59,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:59,724 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) [2021-10-06 21:06:59,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-06 21:07:03,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:07:03,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:03,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:03,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:04,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:05,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:05,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902614282] [2021-10-06 21:07:05,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902614282] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:05,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:05,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:05,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801759330] [2021-10-06 21:07:05,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:05,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:05,516 INFO L87 Difference]: Start difference. First operand 3508 states and 12494 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:06,717 INFO L93 Difference]: Finished difference Result 6343 states and 21372 transitions. [2021-10-06 21:07:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:07:06,718 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:06,734 INFO L225 Difference]: With dead ends: 6343 [2021-10-06 21:07:06,734 INFO L226 Difference]: Without dead ends: 6310 [2021-10-06 21:07:06,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1056.0ms TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:07:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2021-10-06 21:07:06,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 3490. [2021-10-06 21:07:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 3.5692175408426485) internal successors, (12453), 3489 states have internal predecessors, (12453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 12453 transitions. [2021-10-06 21:07:06,819 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 12453 transitions. Word has length 41 [2021-10-06 21:07:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:06,820 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 12453 transitions. [2021-10-06 21:07:06,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 12453 transitions. [2021-10-06 21:07:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:07:06,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:06,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:06,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:07,043 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 [2021-10-06 21:07:07,044 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:07:07,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:07,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1391223445, now seen corresponding path program 100 times [2021-10-06 21:07:07,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:07,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036161142] [2021-10-06 21:07:07,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:07,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:07,047 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) [2021-10-06 21:07:07,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-06 21:07:10,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:07:10,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:10,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:11,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:12,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:12,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036161142] [2021-10-06 21:07:12,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036161142] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:12,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:12,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:12,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677977062] [2021-10-06 21:07:12,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:12,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:12,701 INFO L87 Difference]: Start difference. First operand 3490 states and 12453 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:14,183 INFO L93 Difference]: Finished difference Result 6349 states and 21380 transitions. [2021-10-06 21:07:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:07:14,184 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:14,201 INFO L225 Difference]: With dead ends: 6349 [2021-10-06 21:07:14,201 INFO L226 Difference]: Without dead ends: 6336 [2021-10-06 21:07:14,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1089.4ms TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:07:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2021-10-06 21:07:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 3498. [2021-10-06 21:07:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 3.567343437231913) internal successors, (12475), 3497 states have internal predecessors, (12475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 12475 transitions. [2021-10-06 21:07:14,289 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 12475 transitions. Word has length 41 [2021-10-06 21:07:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:14,289 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 12475 transitions. [2021-10-06 21:07:14,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 12475 transitions. [2021-10-06 21:07:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:07:14,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:14,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:14,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:14,496 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 [2021-10-06 21:07:14,497 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:07:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1252793475, now seen corresponding path program 101 times [2021-10-06 21:07:14,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:14,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157428469] [2021-10-06 21:07:14,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:07:14,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:14,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:14,500 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) [2021-10-06 21:07:14,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-06 21:07:18,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:07:18,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:18,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:18,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:19,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:20,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:20,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157428469] [2021-10-06 21:07:20,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157428469] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:20,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:20,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:20,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706489753] [2021-10-06 21:07:20,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:20,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:20,295 INFO L87 Difference]: Start difference. First operand 3498 states and 12475 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:21,473 INFO L93 Difference]: Finished difference Result 6353 states and 21384 transitions. [2021-10-06 21:07:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:07:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:21,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:21,490 INFO L225 Difference]: With dead ends: 6353 [2021-10-06 21:07:21,491 INFO L226 Difference]: Without dead ends: 6332 [2021-10-06 21:07:21,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1092.8ms TimeCoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:07:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-10-06 21:07:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 3494. [2021-10-06 21:07:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3493 states have (on average 3.5682794159748066) internal successors, (12464), 3493 states have internal predecessors, (12464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 12464 transitions. [2021-10-06 21:07:21,578 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 12464 transitions. Word has length 41 [2021-10-06 21:07:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:21,578 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 12464 transitions. [2021-10-06 21:07:21,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 12464 transitions. [2021-10-06 21:07:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:07:21,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:21,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:21,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:21,786 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 [2021-10-06 21:07:21,787 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:07:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:21,787 INFO L82 PathProgramCache]: Analyzing trace with hash 819768639, now seen corresponding path program 102 times [2021-10-06 21:07:21,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:21,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004555228] [2021-10-06 21:07:21,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:07:21,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:21,790 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) [2021-10-06 21:07:21,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-06 21:07:26,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:07:26,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:26,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:26,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:26,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:27,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:27,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004555228] [2021-10-06 21:07:27,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004555228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:27,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:27,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:27,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694792489] [2021-10-06 21:07:27,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:27,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:27,966 INFO L87 Difference]: Start difference. First operand 3494 states and 12464 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:29,251 INFO L93 Difference]: Finished difference Result 6357 states and 21378 transitions. [2021-10-06 21:07:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:07:29,251 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:29,267 INFO L225 Difference]: With dead ends: 6357 [2021-10-06 21:07:29,267 INFO L226 Difference]: Without dead ends: 6344 [2021-10-06 21:07:29,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1042.8ms TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:07:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2021-10-06 21:07:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 3498. [2021-10-06 21:07:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 3.5661995996568487) internal successors, (12471), 3497 states have internal predecessors, (12471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 12471 transitions. [2021-10-06 21:07:29,355 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 12471 transitions. Word has length 41 [2021-10-06 21:07:29,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:29,356 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 12471 transitions. [2021-10-06 21:07:29,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 12471 transitions. [2021-10-06 21:07:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:07:29,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:29,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:29,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:29,563 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 [2021-10-06 21:07:29,563 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:07:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:29,564 INFO L82 PathProgramCache]: Analyzing trace with hash -117599163, now seen corresponding path program 103 times [2021-10-06 21:07:29,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:29,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319751807] [2021-10-06 21:07:29,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:07:29,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:29,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:29,566 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) [2021-10-06 21:07:29,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-10-06 21:07:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:33,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:33,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:34,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:35,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:35,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319751807] [2021-10-06 21:07:35,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319751807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:35,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:35,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:35,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575943318] [2021-10-06 21:07:35,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:35,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:35,527 INFO L87 Difference]: Start difference. First operand 3498 states and 12471 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:36,861 INFO L93 Difference]: Finished difference Result 6349 states and 21369 transitions. [2021-10-06 21:07:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:07:36,861 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:36,877 INFO L225 Difference]: With dead ends: 6349 [2021-10-06 21:07:36,878 INFO L226 Difference]: Without dead ends: 6330 [2021-10-06 21:07:36,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1057.4ms TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:07:36,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2021-10-06 21:07:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 3494. [2021-10-06 21:07:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3493 states have (on average 3.567134268537074) internal successors, (12460), 3493 states have internal predecessors, (12460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:36,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 12460 transitions. [2021-10-06 21:07:36,966 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 12460 transitions. Word has length 41 [2021-10-06 21:07:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:36,966 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 12460 transitions. [2021-10-06 21:07:36,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 12460 transitions. [2021-10-06 21:07:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:07:36,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:36,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:37,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:37,173 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 [2021-10-06 21:07:37,173 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:07:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:37,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2035804611, now seen corresponding path program 104 times [2021-10-06 21:07:37,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:37,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994116285] [2021-10-06 21:07:37,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:07:37,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:37,177 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) [2021-10-06 21:07:37,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-10-06 21:07:41,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:07:41,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:41,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:41,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:42,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:43,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:43,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994116285] [2021-10-06 21:07:43,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994116285] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:43,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:43,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:43,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87474542] [2021-10-06 21:07:43,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:43,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:43,162 INFO L87 Difference]: Start difference. First operand 3494 states and 12460 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:44,432 INFO L93 Difference]: Finished difference Result 6353 states and 21379 transitions. [2021-10-06 21:07:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:07:44,432 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:44,449 INFO L225 Difference]: With dead ends: 6353 [2021-10-06 21:07:44,449 INFO L226 Difference]: Without dead ends: 6336 [2021-10-06 21:07:44,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1036.7ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:07:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2021-10-06 21:07:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 3500. [2021-10-06 21:07:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 3499 states have (on average 3.5641611889111173) internal successors, (12471), 3499 states have internal predecessors, (12471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 12471 transitions. [2021-10-06 21:07:44,538 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 12471 transitions. Word has length 41 [2021-10-06 21:07:44,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:44,538 INFO L470 AbstractCegarLoop]: Abstraction has 3500 states and 12471 transitions. [2021-10-06 21:07:44,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 12471 transitions. [2021-10-06 21:07:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:07:44,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:44,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:44,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:44,745 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 [2021-10-06 21:07:44,746 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:07:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:44,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1558207893, now seen corresponding path program 105 times [2021-10-06 21:07:44,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:44,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346892011] [2021-10-06 21:07:44,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:07:44,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:44,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:44,749 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) [2021-10-06 21:07:44,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-10-06 21:07:48,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:07:48,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:48,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:48,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:49,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:50,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:50,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346892011] [2021-10-06 21:07:50,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346892011] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:50,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:50,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:50,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624810278] [2021-10-06 21:07:50,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:50,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:50,855 INFO L87 Difference]: Start difference. First operand 3500 states and 12471 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:52,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:52,045 INFO L93 Difference]: Finished difference Result 6335 states and 21349 transitions. [2021-10-06 21:07:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:07:52,046 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:52,062 INFO L225 Difference]: With dead ends: 6335 [2021-10-06 21:07:52,062 INFO L226 Difference]: Without dead ends: 6302 [2021-10-06 21:07:52,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1061.4ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:07:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6302 states. [2021-10-06 21:07:52,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 3482. [2021-10-06 21:07:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.571100258546395) internal successors, (12431), 3481 states have internal predecessors, (12431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 12431 transitions. [2021-10-06 21:07:52,149 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 12431 transitions. Word has length 41 [2021-10-06 21:07:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:52,149 INFO L470 AbstractCegarLoop]: Abstraction has 3482 states and 12431 transitions. [2021-10-06 21:07:52,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 12431 transitions. [2021-10-06 21:07:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:07:52,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:52,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:52,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:52,356 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 [2021-10-06 21:07:52,357 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:07:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1422453735, now seen corresponding path program 106 times [2021-10-06 21:07:52,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:52,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068016538] [2021-10-06 21:07:52,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:52,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:52,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:52,360 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) [2021-10-06 21:07:52,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-10-06 21:07:56,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:07:56,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:56,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:07:56,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:57,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:58,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:58,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068016538] [2021-10-06 21:07:58,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068016538] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:58,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:58,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:07:58,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45456135] [2021-10-06 21:07:58,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:07:58,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:07:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:07:58,510 INFO L87 Difference]: Start difference. First operand 3482 states and 12431 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:59,940 INFO L93 Difference]: Finished difference Result 6325 states and 21321 transitions. [2021-10-06 21:07:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:07:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:07:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:59,957 INFO L225 Difference]: With dead ends: 6325 [2021-10-06 21:07:59,957 INFO L226 Difference]: Without dead ends: 6298 [2021-10-06 21:07:59,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1100.9ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:07:59,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6298 states. [2021-10-06 21:08:00,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6298 to 3536. [2021-10-06 21:08:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 3.553041018387553) internal successors, (12560), 3535 states have internal predecessors, (12560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 12560 transitions. [2021-10-06 21:08:00,046 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 12560 transitions. Word has length 41 [2021-10-06 21:08:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:00,046 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 12560 transitions. [2021-10-06 21:08:00,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 12560 transitions. [2021-10-06 21:08:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:00,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:00,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:00,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:00,254 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 [2021-10-06 21:08:00,254 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1674250273, now seen corresponding path program 107 times [2021-10-06 21:08:00,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:00,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815350675] [2021-10-06 21:08:00,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:08:00,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:00,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:00,258 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) [2021-10-06 21:08:00,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-10-06 21:08:04,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:08:04,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:04,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:08:04,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:05,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:06,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:06,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815350675] [2021-10-06 21:08:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815350675] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:06,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:06,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:08:06,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135053293] [2021-10-06 21:08:06,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:08:06,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:08:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:08:06,511 INFO L87 Difference]: Start difference. First operand 3536 states and 12560 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:07,907 INFO L93 Difference]: Finished difference Result 6337 states and 21328 transitions. [2021-10-06 21:08:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:08:07,908 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:08:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:07,925 INFO L225 Difference]: With dead ends: 6337 [2021-10-06 21:08:07,925 INFO L226 Difference]: Without dead ends: 6320 [2021-10-06 21:08:07,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1039.4ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:08:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-10-06 21:08:07,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 3542. [2021-10-06 21:08:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3541 states have (on average 3.550127082744987) internal successors, (12571), 3541 states have internal predecessors, (12571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 12571 transitions. [2021-10-06 21:08:08,013 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 12571 transitions. Word has length 41 [2021-10-06 21:08:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:08,013 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 12571 transitions. [2021-10-06 21:08:08,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 12571 transitions. [2021-10-06 21:08:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:08,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:08,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:08,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:08,220 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 [2021-10-06 21:08:08,221 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:08,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1836332533, now seen corresponding path program 108 times [2021-10-06 21:08:08,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:08,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550633231] [2021-10-06 21:08:08,222 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:08:08,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:08,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:08,224 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) [2021-10-06 21:08:08,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-10-06 21:08:12,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:08:12,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:12,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:08:12,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:13,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:14,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:14,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550633231] [2021-10-06 21:08:14,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550633231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:14,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:14,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:08:14,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499266368] [2021-10-06 21:08:14,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:08:14,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:08:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:08:14,514 INFO L87 Difference]: Start difference. First operand 3542 states and 12571 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:15,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:15,632 INFO L93 Difference]: Finished difference Result 6319 states and 21298 transitions. [2021-10-06 21:08:15,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:08:15,632 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:08:15,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:15,648 INFO L225 Difference]: With dead ends: 6319 [2021-10-06 21:08:15,648 INFO L226 Difference]: Without dead ends: 6286 [2021-10-06 21:08:15,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1065.9ms TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:08:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-10-06 21:08:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 3524. [2021-10-06 21:08:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 3523 states have (on average 3.555492478001703) internal successors, (12526), 3523 states have internal predecessors, (12526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 12526 transitions. [2021-10-06 21:08:15,733 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 12526 transitions. Word has length 41 [2021-10-06 21:08:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:15,734 INFO L470 AbstractCegarLoop]: Abstraction has 3524 states and 12526 transitions. [2021-10-06 21:08:15,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 12526 transitions. [2021-10-06 21:08:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:15,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:15,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:15,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:15,940 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 [2021-10-06 21:08:15,941 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:15,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1594198829, now seen corresponding path program 109 times [2021-10-06 21:08:15,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:15,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84791760] [2021-10-06 21:08:15,943 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:08:15,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:15,944 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) [2021-10-06 21:08:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-10-06 21:08:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:08:20,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:08:20,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:20,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:22,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:22,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84791760] [2021-10-06 21:08:22,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84791760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:22,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:22,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:08:22,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995087809] [2021-10-06 21:08:22,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:08:22,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:08:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:08:22,181 INFO L87 Difference]: Start difference. First operand 3524 states and 12526 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:23,379 INFO L93 Difference]: Finished difference Result 6341 states and 21330 transitions. [2021-10-06 21:08:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:08:23,379 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:08:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:23,395 INFO L225 Difference]: With dead ends: 6341 [2021-10-06 21:08:23,395 INFO L226 Difference]: Without dead ends: 6324 [2021-10-06 21:08:23,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1052.5ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:08:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2021-10-06 21:08:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 3542. [2021-10-06 21:08:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3541 states have (on average 3.550127082744987) internal successors, (12571), 3541 states have internal predecessors, (12571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 12571 transitions. [2021-10-06 21:08:23,483 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 12571 transitions. Word has length 41 [2021-10-06 21:08:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:23,483 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 12571 transitions. [2021-10-06 21:08:23,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 12571 transitions. [2021-10-06 21:08:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:23,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:23,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:23,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:23,690 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 [2021-10-06 21:08:23,690 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:23,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:23,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1432116569, now seen corresponding path program 110 times [2021-10-06 21:08:23,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:23,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717087672] [2021-10-06 21:08:23,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:08:23,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:23,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:23,693 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) [2021-10-06 21:08:23,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-10-06 21:08:27,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:08:27,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:27,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:08:27,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:28,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:30,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:30,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717087672] [2021-10-06 21:08:30,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717087672] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:30,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:30,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:08:30,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280128829] [2021-10-06 21:08:30,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:08:30,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:30,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:08:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:08:30,150 INFO L87 Difference]: Start difference. First operand 3542 states and 12571 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:31,443 INFO L93 Difference]: Finished difference Result 6323 states and 21300 transitions. [2021-10-06 21:08:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:08:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:08:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:31,460 INFO L225 Difference]: With dead ends: 6323 [2021-10-06 21:08:31,460 INFO L226 Difference]: Without dead ends: 6302 [2021-10-06 21:08:31,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1054.5ms TimeCoverageRelationStatistics Valid=350, Invalid=910, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:08:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6302 states. [2021-10-06 21:08:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 3536. [2021-10-06 21:08:31,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3535 states have (on average 3.5513437057991513) internal successors, (12554), 3535 states have internal predecessors, (12554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 12554 transitions. [2021-10-06 21:08:31,549 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 12554 transitions. Word has length 41 [2021-10-06 21:08:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:31,549 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 12554 transitions. [2021-10-06 21:08:31,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 12554 transitions. [2021-10-06 21:08:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:31,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:31,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:31,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Ended with exit code 0 [2021-10-06 21:08:31,756 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 [2021-10-06 21:08:31,757 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:31,757 INFO L82 PathProgramCache]: Analyzing trace with hash 722627283, now seen corresponding path program 111 times [2021-10-06 21:08:31,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:31,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096842596] [2021-10-06 21:08:31,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:08:31,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:31,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:31,760 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) [2021-10-06 21:08:31,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-10-06 21:08:36,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:08:36,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:36,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:08:36,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:36,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:38,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:38,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096842596] [2021-10-06 21:08:38,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096842596] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:38,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:38,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:08:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819884047] [2021-10-06 21:08:38,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:08:38,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:08:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:08:38,182 INFO L87 Difference]: Start difference. First operand 3536 states and 12554 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:39,287 INFO L93 Difference]: Finished difference Result 6301 states and 21263 transitions. [2021-10-06 21:08:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:08:39,288 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:08:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:39,303 INFO L225 Difference]: With dead ends: 6301 [2021-10-06 21:08:39,303 INFO L226 Difference]: Without dead ends: 6214 [2021-10-06 21:08:39,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1092.7ms TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:08:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-10-06 21:08:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 3482. [2021-10-06 21:08:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.5630565929330653) internal successors, (12403), 3481 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 12403 transitions. [2021-10-06 21:08:39,525 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 12403 transitions. Word has length 41 [2021-10-06 21:08:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:39,525 INFO L470 AbstractCegarLoop]: Abstraction has 3482 states and 12403 transitions. [2021-10-06 21:08:39,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 12403 transitions. [2021-10-06 21:08:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:39,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:39,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:39,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:39,732 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 [2021-10-06 21:08:39,733 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1089478261, now seen corresponding path program 112 times [2021-10-06 21:08:39,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:39,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240691054] [2021-10-06 21:08:39,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:08:39,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:39,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:39,737 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) [2021-10-06 21:08:39,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-10-06 21:08:44,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:08:44,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:44,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:08:44,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:44,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:45,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:45,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240691054] [2021-10-06 21:08:45,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240691054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:45,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:45,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:08:45,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138214083] [2021-10-06 21:08:45,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:08:45,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:08:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:08:45,937 INFO L87 Difference]: Start difference. First operand 3482 states and 12403 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:47,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:47,330 INFO L93 Difference]: Finished difference Result 6279 states and 21165 transitions. [2021-10-06 21:08:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:08:47,330 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:08:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:47,345 INFO L225 Difference]: With dead ends: 6279 [2021-10-06 21:08:47,345 INFO L226 Difference]: Without dead ends: 6266 [2021-10-06 21:08:47,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1085.2ms TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:08:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2021-10-06 21:08:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 3498. [2021-10-06 21:08:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 3.5616242493565915) internal successors, (12455), 3497 states have internal predecessors, (12455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 12455 transitions. [2021-10-06 21:08:47,609 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 12455 transitions. Word has length 41 [2021-10-06 21:08:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:47,609 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 12455 transitions. [2021-10-06 21:08:47,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 12455 transitions. [2021-10-06 21:08:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:47,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:47,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:47,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:47,823 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 [2021-10-06 21:08:47,824 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 951048291, now seen corresponding path program 113 times [2021-10-06 21:08:47,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:47,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61252602] [2021-10-06 21:08:47,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:08:47,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:47,827 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) [2021-10-06 21:08:47,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-10-06 21:08:52,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:08:52,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:52,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:08:52,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:53,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:54,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:54,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61252602] [2021-10-06 21:08:54,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61252602] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:54,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:54,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:08:54,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474641064] [2021-10-06 21:08:54,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:08:54,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:08:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:08:54,280 INFO L87 Difference]: Start difference. First operand 3498 states and 12455 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:55,613 INFO L93 Difference]: Finished difference Result 6283 states and 21169 transitions. [2021-10-06 21:08:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:08:55,613 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:08:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:55,630 INFO L225 Difference]: With dead ends: 6283 [2021-10-06 21:08:55,630 INFO L226 Difference]: Without dead ends: 6262 [2021-10-06 21:08:55,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1096.7ms TimeCoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:08:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6262 states. [2021-10-06 21:08:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6262 to 3494. [2021-10-06 21:08:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3493 states have (on average 3.5625536787861436) internal successors, (12444), 3493 states have internal predecessors, (12444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 12444 transitions. [2021-10-06 21:08:55,716 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 12444 transitions. Word has length 41 [2021-10-06 21:08:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:55,716 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 12444 transitions. [2021-10-06 21:08:55,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 12444 transitions. [2021-10-06 21:08:55,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:08:55,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:55,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:55,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:55,923 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 [2021-10-06 21:08:55,924 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:08:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:55,924 INFO L82 PathProgramCache]: Analyzing trace with hash 518023455, now seen corresponding path program 114 times [2021-10-06 21:08:55,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:55,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725137911] [2021-10-06 21:08:55,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:08:55,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:55,927 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) [2021-10-06 21:08:55,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-10-06 21:09:00,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:09:00,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:00,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:09:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:01,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:02,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:02,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725137911] [2021-10-06 21:09:02,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725137911] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:02,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:02,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:09:02,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004370011] [2021-10-06 21:09:02,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:09:02,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:09:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:09:02,398 INFO L87 Difference]: Start difference. First operand 3494 states and 12444 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:03,608 INFO L93 Difference]: Finished difference Result 6253 states and 21119 transitions. [2021-10-06 21:09:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:09:03,608 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:09:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:03,625 INFO L225 Difference]: With dead ends: 6253 [2021-10-06 21:09:03,625 INFO L226 Difference]: Without dead ends: 6240 [2021-10-06 21:09:03,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1006.3ms TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:09:03,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2021-10-06 21:09:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3498. [2021-10-06 21:09:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 3.560480411781527) internal successors, (12451), 3497 states have internal predecessors, (12451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 12451 transitions. [2021-10-06 21:09:03,712 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 12451 transitions. Word has length 41 [2021-10-06 21:09:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:03,713 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 12451 transitions. [2021-10-06 21:09:03,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 12451 transitions. [2021-10-06 21:09:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:09:03,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:03,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:03,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:03,919 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 [2021-10-06 21:09:03,920 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:09:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:03,920 INFO L82 PathProgramCache]: Analyzing trace with hash -419344347, now seen corresponding path program 115 times [2021-10-06 21:09:03,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:03,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747280248] [2021-10-06 21:09:03,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:09:03,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:03,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:03,923 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) [2021-10-06 21:09:03,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-10-06 21:09:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:09:08,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:09:08,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:09,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:10,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:10,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747280248] [2021-10-06 21:09:10,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747280248] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:10,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:10,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:09:10,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451576923] [2021-10-06 21:09:10,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:09:10,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:09:10,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:09:10,546 INFO L87 Difference]: Start difference. First operand 3498 states and 12451 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:11,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:11,783 INFO L93 Difference]: Finished difference Result 6255 states and 21119 transitions. [2021-10-06 21:09:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:09:11,783 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:09:11,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:11,801 INFO L225 Difference]: With dead ends: 6255 [2021-10-06 21:09:11,801 INFO L226 Difference]: Without dead ends: 6236 [2021-10-06 21:09:11,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1011.5ms TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:09:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2021-10-06 21:09:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 3494. [2021-10-06 21:09:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3493 states have (on average 3.561408531348411) internal successors, (12440), 3493 states have internal predecessors, (12440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 12440 transitions. [2021-10-06 21:09:11,888 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 12440 transitions. Word has length 41 [2021-10-06 21:09:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:11,888 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 12440 transitions. [2021-10-06 21:09:11,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 12440 transitions. [2021-10-06 21:09:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:09:11,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:11,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:11,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:12,095 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 [2021-10-06 21:09:12,095 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:09:12,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:12,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1957417501, now seen corresponding path program 116 times [2021-10-06 21:09:12,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:12,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056548360] [2021-10-06 21:09:12,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:09:12,098 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:12,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:12,099 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) [2021-10-06 21:09:12,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-10-06 21:09:16,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:09:16,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:16,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:09:16,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:17,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:18,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:18,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056548360] [2021-10-06 21:09:18,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056548360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:18,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:18,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:09:18,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683116125] [2021-10-06 21:09:18,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:09:18,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:09:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:09:18,570 INFO L87 Difference]: Start difference. First operand 3494 states and 12440 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:19,815 INFO L93 Difference]: Finished difference Result 6283 states and 21164 transitions. [2021-10-06 21:09:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:09:19,816 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:09:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:19,832 INFO L225 Difference]: With dead ends: 6283 [2021-10-06 21:09:19,832 INFO L226 Difference]: Without dead ends: 6266 [2021-10-06 21:09:19,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1025.6ms TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:09:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2021-10-06 21:09:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 3500. [2021-10-06 21:09:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 3499 states have (on average 3.558445270077165) internal successors, (12451), 3499 states have internal predecessors, (12451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 12451 transitions. [2021-10-06 21:09:19,920 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 12451 transitions. Word has length 41 [2021-10-06 21:09:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:19,920 INFO L470 AbstractCegarLoop]: Abstraction has 3500 states and 12451 transitions. [2021-10-06 21:09:19,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 12451 transitions. [2021-10-06 21:09:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:09:19,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:19,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:19,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:20,127 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 [2021-10-06 21:09:20,128 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:09:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:20,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1256462709, now seen corresponding path program 117 times [2021-10-06 21:09:20,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:20,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630633613] [2021-10-06 21:09:20,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:09:20,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:20,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:20,131 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) [2021-10-06 21:09:20,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-10-06 21:09:24,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:09:24,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:24,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:09:24,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:25,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:26,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:26,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630633613] [2021-10-06 21:09:26,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630633613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:26,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:26,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-06 21:09:26,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526850483] [2021-10-06 21:09:26,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 21:09:26,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 21:09:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:09:26,600 INFO L87 Difference]: Start difference. First operand 3500 states and 12451 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:27,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:27,968 INFO L93 Difference]: Finished difference Result 6275 states and 21143 transitions. [2021-10-06 21:09:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:09:27,969 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2021-10-06 21:09:27,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:27,984 INFO L225 Difference]: With dead ends: 6275 [2021-10-06 21:09:27,984 INFO L226 Difference]: Without dead ends: 6250 [2021-10-06 21:09:27,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1173.0ms TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:09:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2021-10-06 21:09:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 3490. [2021-10-06 21:09:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 3.5623387790197762) internal successors, (12429), 3489 states have internal predecessors, (12429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 12429 transitions. [2021-10-06 21:09:28,069 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 12429 transitions. Word has length 41 [2021-10-06 21:09:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:28,069 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 12429 transitions. [2021-10-06 21:09:28,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 12429 transitions. [2021-10-06 21:09:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 21:09:28,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:28,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:28,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:28,276 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 [2021-10-06 21:09:28,276 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:09:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1620805837, now seen corresponding path program 118 times [2021-10-06 21:09:28,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:28,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676419984] [2021-10-06 21:09:28,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:09:28,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:28,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:28,280 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) [2021-10-06 21:09:28,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process Received shutdown request... [2021-10-06 21:09:31,638 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:09:31,665 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 [2021-10-06 21:09:32,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:32,839 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Forcibly destroying the process [2021-10-06 21:09:32,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2021-10-06 21:09:32,852 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:09:32,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 137 [2021-10-06 21:09:32,856 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. [2021-10-06 21:09:32,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:09:32,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:09:32,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:09:32,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:09:32,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:09:32,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:09:32,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:09:32,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:09:32,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:09:32,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:09:32,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:09:32,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:09:32,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:09:32,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:09:32,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-06 21:09:32,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-06 21:09:32,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:09:32,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:09:32,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:09:32,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:09:32,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 21:09:32,867 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:09:32,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:09:32,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:09:32 BasicIcfg [2021-10-06 21:09:32,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:09:32,871 INFO L168 Benchmark]: Toolchain (without parser) took 713285.84 ms. Allocated memory was 157.3 MB in the beginning and 5.0 GB in the end (delta: 4.9 GB). Free memory was 133.5 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-10-06 21:09:32,871 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:09:32,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.67 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 121.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:09:32,872 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.86 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 119.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:09:32,872 INFO L168 Benchmark]: Boogie Preprocessor took 37.74 ms. Allocated memory is still 157.3 MB. Free memory was 119.9 MB in the beginning and 118.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:09:32,873 INFO L168 Benchmark]: RCFGBuilder took 679.68 ms. Allocated memory is still 157.3 MB. Free memory was 118.4 MB in the beginning and 135.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2021-10-06 21:09:32,873 INFO L168 Benchmark]: TraceAbstraction took 712196.08 ms. Allocated memory was 157.3 MB in the beginning and 5.0 GB in the end (delta: 4.9 GB). Free memory was 135.7 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-10-06 21:09:32,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.67 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 121.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.86 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 119.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.74 ms. Allocated memory is still 157.3 MB. Free memory was 119.9 MB in the beginning and 118.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 679.68 ms. Allocated memory is still 157.3 MB. Free memory was 118.4 MB in the beginning and 135.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 712196.08 ms. Allocated memory was 157.3 MB in the beginning and 5.0 GB in the end (delta: 4.9 GB). Free memory was 135.7 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22387.9ms, 170 PlacesBefore, 76 PlacesAfterwards, 163 TransitionsBefore, 65 TransitionsAfterwards, 4080 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 146 TotalNumberOfCompositions, 17877 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12252, positive: 11890, positive conditional: 0, positive unconditional: 11890, negative: 362, negative conditional: 0, negative unconditional: 362, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3596, positive: 3538, positive conditional: 0, positive unconditional: 3538, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3596, positive: 3516, positive conditional: 0, positive unconditional: 3516, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 80, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 153, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12252, positive: 8352, positive conditional: 0, positive unconditional: 8352, negative: 304, negative conditional: 0, negative unconditional: 304, unknown: 3596, unknown conditional: 0, unknown unconditional: 3596] , Statistics on independence cache: Total cache size (in pairs): 1023, Positive cache size: 993, Positive conditional cache size: 0, Positive unconditional cache size: 993, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30 - 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: 97]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 42 with TraceHistMax 1,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1676419984] and IpTcStrategyModuleCvc4 [548888199]. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 210 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 712006.8ms, OverallIterations: 127, TraceHistogramMax: 1, EmptinessCheckTime: 1101.0ms, AutomataDifference: 145680.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23254.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23614 SDtfs, 51213 SDslu, 166753 SDs, 0 SdLazy, 83693 SolverSat, 4855 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75946.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10660 GetRequests, 6708 SyntacticMatches, 84 SemanticMatches, 3868 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26322 ImplicationChecksByTransitivity, 115113.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12803occurred in iteration=0, InterpolantAutomatonStates: 1942, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19796.1ms AutomataMinimizationTime, 126 MinimizatonAttempts, 344578 StatesRemovedByMinimization, 114 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1410.0ms SsaConstructionTime, 24913.9ms SatisfiabilityAnalysisTime, 214479.4ms InterpolantComputationTime, 4846 NumberOfCodeBlocks, 4846 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 9440 ConstructedInterpolants, 2896 QuantifiedInterpolants, 144167 SizeOfPredicates, 1874 NumberOfNonLiveVariables, 16754 ConjunctsInSsa, 1751 ConjunctsInUnsatCore, 252 InterpolantComputations, 252 PerfectInterpolantSequences, 0/0 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