/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 17:09:11,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 17:09:11,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 17:09:11,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 17:09:11,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 17:09:11,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 17:09:11,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 17:09:11,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 17:09:11,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 17:09:11,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 17:09:11,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 17:09:11,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 17:09:11,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 17:09:11,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 17:09:11,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 17:09:11,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 17:09:11,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 17:09:11,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 17:09:11,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 17:09:11,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 17:09:11,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 17:09:11,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 17:09:11,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 17:09:11,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 17:09:11,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 17:09:11,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 17:09:11,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 17:09:11,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 17:09:11,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 17:09:11,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 17:09:11,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 17:09:11,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 17:09:11,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 17:09:11,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 17:09:11,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 17:09:11,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 17:09:11,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 17:09:11,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 17:09:11,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 17:09:11,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 17:09:11,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 17:09:11,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 17:09:11,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 17:09:11,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 17:09:11,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 17:09:11,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 17:09:11,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 17:09:11,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 17:09:11,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 17:09:11,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 17:09:11,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 17:09:11,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 17:09:11,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 17:09:11,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 17:09:11,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 17:09:11,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 17:09:11,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 17:09:11,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 17:09:11,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 17:09:11,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 17:09:11,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 17:09:11,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 17:09:11,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 17:09:11,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 17:09:11,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 17:09:11,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 17:09:11,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 17:09:12,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 17:09:12,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 17:09:12,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 17:09:12,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 17:09:12,257 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 17:09:12,258 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-10-15 17:09:12,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e947530/9dba9c54772245c6bee3fe2f2b84b8f6/FLAG413b40c7c [2020-10-15 17:09:12,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 17:09:12,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-10-15 17:09:12,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e947530/9dba9c54772245c6bee3fe2f2b84b8f6/FLAG413b40c7c [2020-10-15 17:09:13,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e947530/9dba9c54772245c6bee3fe2f2b84b8f6 [2020-10-15 17:09:13,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 17:09:13,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 17:09:13,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 17:09:13,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 17:09:13,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 17:09:13,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48efa502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13, skipping insertion in model container [2020-10-15 17:09:13,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 17:09:13,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 17:09:13,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 17:09:13,722 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 17:09:13,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 17:09:13,847 INFO L208 MainTranslator]: Completed translation [2020-10-15 17:09:13,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13 WrapperNode [2020-10-15 17:09:13,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 17:09:13,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 17:09:13,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 17:09:13,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 17:09:13,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 17:09:13,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 17:09:13,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 17:09:13,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 17:09:13,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... [2020-10-15 17:09:13,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 17:09:13,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 17:09:13,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 17:09:13,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 17:09:13,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 17:09:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 17:09:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 17:09:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 17:09:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 17:09:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 17:09:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 17:09:14,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 17:09:14,016 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 17:09:14,429 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 17:09:14,429 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-15 17:09:14,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:09:14 BoogieIcfgContainer [2020-10-15 17:09:14,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 17:09:14,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 17:09:14,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 17:09:14,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 17:09:14,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:09:13" (1/3) ... [2020-10-15 17:09:14,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4820d355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:09:14, skipping insertion in model container [2020-10-15 17:09:14,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:09:13" (2/3) ... [2020-10-15 17:09:14,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4820d355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:09:14, skipping insertion in model container [2020-10-15 17:09:14,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:09:14" (3/3) ... [2020-10-15 17:09:14,441 INFO L111 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2020-10-15 17:09:14,453 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 17:09:14,453 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 17:09:14,460 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 17:09:14,462 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 17:09:14,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:14,510 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 17:09:14,532 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:09:14,532 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:09:14,533 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:09:14,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:09:14,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:09:14,534 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:09:14,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:09:14,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:09:14,545 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:09:14,547 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 32 transitions, 69 flow [2020-10-15 17:09:14,550 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 32 transitions, 69 flow [2020-10-15 17:09:14,553 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-10-15 17:09:14,584 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-10-15 17:09:14,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 17:09:14,589 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-10-15 17:09:14,590 INFO L117 LiptonReduction]: Number of co-enabled transitions 260 [2020-10-15 17:09:15,470 INFO L132 LiptonReduction]: Checked pairs total: 259 [2020-10-15 17:09:15,470 INFO L134 LiptonReduction]: Total number of compositions: 30 [2020-10-15 17:09:15,477 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-10-15 17:09:15,486 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-10-15 17:09:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-15 17:09:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-15 17:09:15,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:15,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-15 17:09:15,497 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:15,503 INFO L82 PathProgramCache]: Analyzing trace with hash 168321027, now seen corresponding path program 1 times [2020-10-15 17:09:15,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:15,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002911556] [2020-10-15 17:09:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:15,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002911556] [2020-10-15 17:09:15,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:15,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 17:09:15,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233862960] [2020-10-15 17:09:15,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:09:15,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:15,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:09:15,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:15,773 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-15 17:09:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:15,806 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-10-15 17:09:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:09:15,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-15 17:09:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:15,817 INFO L225 Difference]: With dead ends: 23 [2020-10-15 17:09:15,818 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 17:09:15,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 17:09:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-15 17:09:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-15 17:09:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-10-15 17:09:15,853 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-10-15 17:09:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:15,853 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-10-15 17:09:15,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:09:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-10-15 17:09:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 17:09:15,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:15,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 17:09:15,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 17:09:15,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:15,855 INFO L82 PathProgramCache]: Analyzing trace with hash 922984961, now seen corresponding path program 1 times [2020-10-15 17:09:15,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:15,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068018939] [2020-10-15 17:09:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:15,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068018939] [2020-10-15 17:09:15,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:15,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 17:09:15,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887373484] [2020-10-15 17:09:15,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:09:15,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:15,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:09:15,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:09:15,940 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2020-10-15 17:09:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:15,962 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2020-10-15 17:09:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:09:15,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-15 17:09:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:15,963 INFO L225 Difference]: With dead ends: 19 [2020-10-15 17:09:15,963 INFO L226 Difference]: Without dead ends: 19 [2020-10-15 17:09:15,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:09:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-15 17:09:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2020-10-15 17:09:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-15 17:09:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2020-10-15 17:09:15,968 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2020-10-15 17:09:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:15,969 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2020-10-15 17:09:15,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:09:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2020-10-15 17:09:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 17:09:15,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:15,970 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-15 17:09:15,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 17:09:15,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:15,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:15,971 INFO L82 PathProgramCache]: Analyzing trace with hash 922916027, now seen corresponding path program 1 times [2020-10-15 17:09:15,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:15,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401221185] [2020-10-15 17:09:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:15,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:16,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:16,031 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:09:16,031 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:09:16,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 17:09:16,033 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:09:16,034 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 17:09:16,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,050 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:16,063 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 17:09:16,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:09:16,064 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:09:16,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:09:16,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:09:16,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:09:16,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:09:16,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:09:16,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:09:16,067 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:09:16,067 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 46 transitions, 104 flow [2020-10-15 17:09:16,067 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 46 transitions, 104 flow [2020-10-15 17:09:16,068 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-10-15 17:09:16,096 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-10-15 17:09:16,096 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 17:09:16,099 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-10-15 17:09:16,102 INFO L117 LiptonReduction]: Number of co-enabled transitions 884 [2020-10-15 17:09:16,780 INFO L132 LiptonReduction]: Checked pairs total: 1787 [2020-10-15 17:09:16,780 INFO L134 LiptonReduction]: Total number of compositions: 32 [2020-10-15 17:09:16,781 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 54 flow [2020-10-15 17:09:16,792 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2020-10-15 17:09:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-10-15 17:09:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 17:09:16,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:16,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:16,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:16,795 INFO L82 PathProgramCache]: Analyzing trace with hash 596115587, now seen corresponding path program 1 times [2020-10-15 17:09:16,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:16,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204319078] [2020-10-15 17:09:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:16,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204319078] [2020-10-15 17:09:16,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:16,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:16,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141924491] [2020-10-15 17:09:16,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:16,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:16,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:16,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:16,892 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2020-10-15 17:09:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:16,968 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2020-10-15 17:09:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:16,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-15 17:09:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:16,977 INFO L225 Difference]: With dead ends: 251 [2020-10-15 17:09:16,977 INFO L226 Difference]: Without dead ends: 251 [2020-10-15 17:09:16,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-15 17:09:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-10-15 17:09:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-15 17:09:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2020-10-15 17:09:17,015 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2020-10-15 17:09:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:17,015 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2020-10-15 17:09:17,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2020-10-15 17:09:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 17:09:17,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:17,017 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-15 17:09:17,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 17:09:17,018 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:17,018 INFO L82 PathProgramCache]: Analyzing trace with hash -690616091, now seen corresponding path program 1 times [2020-10-15 17:09:17,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:17,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104198276] [2020-10-15 17:09:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:17,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:17,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:17,052 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:09:17,052 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:09:17,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 17:09:17,053 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:09:17,057 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 17:09:17,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:17,109 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 17:09:17,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:09:17,110 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:09:17,110 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:09:17,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:09:17,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:09:17,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:09:17,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:09:17,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:09:17,112 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:09:17,112 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 141 flow [2020-10-15 17:09:17,112 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 60 transitions, 141 flow [2020-10-15 17:09:17,112 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-10-15 17:09:17,143 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-10-15 17:09:17,144 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-15 17:09:17,146 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 223 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-15 17:09:17,150 INFO L117 LiptonReduction]: Number of co-enabled transitions 1872 [2020-10-15 17:09:18,050 INFO L132 LiptonReduction]: Checked pairs total: 4048 [2020-10-15 17:09:18,050 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-15 17:09:18,051 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 27 transitions, 75 flow [2020-10-15 17:09:18,114 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2020-10-15 17:09:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2020-10-15 17:09:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 17:09:18,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:18,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:18,116 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash -34022085, now seen corresponding path program 1 times [2020-10-15 17:09:18,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:18,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648440302] [2020-10-15 17:09:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:18,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648440302] [2020-10-15 17:09:18,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:18,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:18,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033041284] [2020-10-15 17:09:18,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:18,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:18,171 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2020-10-15 17:09:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:18,310 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2020-10-15 17:09:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:18,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-15 17:09:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:18,333 INFO L225 Difference]: With dead ends: 1547 [2020-10-15 17:09:18,334 INFO L226 Difference]: Without dead ends: 1547 [2020-10-15 17:09:18,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-10-15 17:09:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2020-10-15 17:09:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-15 17:09:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2020-10-15 17:09:18,470 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2020-10-15 17:09:18,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:18,470 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2020-10-15 17:09:18,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:18,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2020-10-15 17:09:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 17:09:18,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:18,473 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:18,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 17:09:18,473 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1664535642, now seen corresponding path program 1 times [2020-10-15 17:09:18,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:18,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537877852] [2020-10-15 17:09:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:18,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537877852] [2020-10-15 17:09:18,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:18,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:18,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106888880] [2020-10-15 17:09:18,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:09:18,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:18,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:09:18,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:18,618 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2020-10-15 17:09:18,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:18,734 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2020-10-15 17:09:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:09:18,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 17:09:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:18,748 INFO L225 Difference]: With dead ends: 1516 [2020-10-15 17:09:18,748 INFO L226 Difference]: Without dead ends: 1516 [2020-10-15 17:09:18,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:18,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-10-15 17:09:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2020-10-15 17:09:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-10-15 17:09:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2020-10-15 17:09:18,801 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2020-10-15 17:09:18,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:18,802 INFO L481 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2020-10-15 17:09:18,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:09:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2020-10-15 17:09:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:09:18,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:18,803 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:18,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 17:09:18,803 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:18,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:18,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1222264884, now seen corresponding path program 1 times [2020-10-15 17:09:18,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:18,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169125395] [2020-10-15 17:09:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:09:18,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169125395] [2020-10-15 17:09:18,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:18,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:18,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109533692] [2020-10-15 17:09:18,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:18,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:18,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:18,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:18,851 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2020-10-15 17:09:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:18,917 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2020-10-15 17:09:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:18,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 17:09:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:18,932 INFO L225 Difference]: With dead ends: 1685 [2020-10-15 17:09:18,932 INFO L226 Difference]: Without dead ends: 1685 [2020-10-15 17:09:18,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-10-15 17:09:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2020-10-15 17:09:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-10-15 17:09:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2020-10-15 17:09:18,992 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2020-10-15 17:09:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:18,994 INFO L481 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2020-10-15 17:09:18,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2020-10-15 17:09:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 17:09:18,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:18,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:18,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 17:09:18,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:18,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2070493020, now seen corresponding path program 1 times [2020-10-15 17:09:18,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:18,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309263551] [2020-10-15 17:09:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:09:19,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309263551] [2020-10-15 17:09:19,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:19,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:19,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971071176] [2020-10-15 17:09:19,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:09:19,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:19,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:09:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:19,059 INFO L87 Difference]: Start difference. First operand 1404 states and 5142 transitions. Second operand 4 states. [2020-10-15 17:09:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:19,162 INFO L93 Difference]: Finished difference Result 1785 states and 6555 transitions. [2020-10-15 17:09:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:09:19,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 17:09:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:19,178 INFO L225 Difference]: With dead ends: 1785 [2020-10-15 17:09:19,178 INFO L226 Difference]: Without dead ends: 1785 [2020-10-15 17:09:19,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-10-15 17:09:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1545. [2020-10-15 17:09:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-15 17:09:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5692 transitions. [2020-10-15 17:09:19,238 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5692 transitions. Word has length 12 [2020-10-15 17:09:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:19,239 INFO L481 AbstractCegarLoop]: Abstraction has 1545 states and 5692 transitions. [2020-10-15 17:09:19,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:09:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5692 transitions. [2020-10-15 17:09:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 17:09:19,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:19,240 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-15 17:09:19,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 17:09:19,241 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:19,241 INFO L82 PathProgramCache]: Analyzing trace with hash -853373875, now seen corresponding path program 1 times [2020-10-15 17:09:19,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:19,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219544908] [2020-10-15 17:09:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:19,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:19,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:19,260 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:09:19,260 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:09:19,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 17:09:19,261 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:09:19,261 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 17:09:19,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,278 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,278 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,279 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:19,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 17:09:19,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:09:19,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:09:19,286 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:09:19,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:09:19,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:09:19,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:09:19,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:09:19,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:09:19,288 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:09:19,289 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 180 flow [2020-10-15 17:09:19,289 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 74 transitions, 180 flow [2020-10-15 17:09:19,289 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-10-15 17:09:19,305 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-10-15 17:09:19,305 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-15 17:09:19,307 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-10-15 17:09:19,311 INFO L117 LiptonReduction]: Number of co-enabled transitions 3224 [2020-10-15 17:09:20,395 INFO L132 LiptonReduction]: Checked pairs total: 7163 [2020-10-15 17:09:20,396 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-15 17:09:20,396 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 102 flow [2020-10-15 17:09:21,050 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2020-10-15 17:09:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2020-10-15 17:09:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 17:09:21,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:21,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:21,051 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash -242484138, now seen corresponding path program 1 times [2020-10-15 17:09:21,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:21,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570586629] [2020-10-15 17:09:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:21,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570586629] [2020-10-15 17:09:21,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:21,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:21,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509018097] [2020-10-15 17:09:21,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:21,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:21,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:21,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:21,136 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2020-10-15 17:09:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:21,339 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2020-10-15 17:09:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:21,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-15 17:09:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:21,418 INFO L225 Difference]: With dead ends: 8945 [2020-10-15 17:09:21,418 INFO L226 Difference]: Without dead ends: 8945 [2020-10-15 17:09:21,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2020-10-15 17:09:21,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2020-10-15 17:09:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2020-10-15 17:09:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2020-10-15 17:09:21,810 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2020-10-15 17:09:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:21,811 INFO L481 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2020-10-15 17:09:21,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2020-10-15 17:09:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 17:09:21,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:21,812 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:21,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 17:09:21,812 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1098996544, now seen corresponding path program 1 times [2020-10-15 17:09:21,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:21,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708005997] [2020-10-15 17:09:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:21,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708005997] [2020-10-15 17:09:21,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:21,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:21,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681555337] [2020-10-15 17:09:21,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:09:21,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:09:21,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:21,871 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 4 states. [2020-10-15 17:09:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:22,177 INFO L93 Difference]: Finished difference Result 9334 states and 43415 transitions. [2020-10-15 17:09:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:09:22,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 17:09:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:22,237 INFO L225 Difference]: With dead ends: 9334 [2020-10-15 17:09:22,238 INFO L226 Difference]: Without dead ends: 9334 [2020-10-15 17:09:22,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2020-10-15 17:09:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 7850. [2020-10-15 17:09:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2020-10-15 17:09:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 36573 transitions. [2020-10-15 17:09:22,702 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 36573 transitions. Word has length 9 [2020-10-15 17:09:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:22,702 INFO L481 AbstractCegarLoop]: Abstraction has 7850 states and 36573 transitions. [2020-10-15 17:09:22,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:09:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 36573 transitions. [2020-10-15 17:09:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:09:22,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:22,703 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:22,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 17:09:22,703 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:22,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1906558445, now seen corresponding path program 1 times [2020-10-15 17:09:22,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:22,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72015] [2020-10-15 17:09:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:09:22,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72015] [2020-10-15 17:09:22,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:22,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:22,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402950334] [2020-10-15 17:09:22,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:22,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:22,745 INFO L87 Difference]: Start difference. First operand 7850 states and 36573 transitions. Second operand 5 states. [2020-10-15 17:09:22,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:22,886 INFO L93 Difference]: Finished difference Result 10343 states and 47933 transitions. [2020-10-15 17:09:22,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:22,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 17:09:22,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:23,085 INFO L225 Difference]: With dead ends: 10343 [2020-10-15 17:09:23,085 INFO L226 Difference]: Without dead ends: 10343 [2020-10-15 17:09:23,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2020-10-15 17:09:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 8547. [2020-10-15 17:09:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8547 states. [2020-10-15 17:09:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 39726 transitions. [2020-10-15 17:09:23,483 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 39726 transitions. Word has length 10 [2020-10-15 17:09:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:23,483 INFO L481 AbstractCegarLoop]: Abstraction has 8547 states and 39726 transitions. [2020-10-15 17:09:23,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 39726 transitions. [2020-10-15 17:09:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 17:09:23,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:23,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:23,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 17:09:23,485 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:23,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1748368365, now seen corresponding path program 1 times [2020-10-15 17:09:23,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:23,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490206719] [2020-10-15 17:09:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:09:23,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490206719] [2020-10-15 17:09:23,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:23,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:23,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803276542] [2020-10-15 17:09:23,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:09:23,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:23,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:09:23,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:23,542 INFO L87 Difference]: Start difference. First operand 8547 states and 39726 transitions. Second operand 4 states. [2020-10-15 17:09:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:23,755 INFO L93 Difference]: Finished difference Result 11574 states and 53865 transitions. [2020-10-15 17:09:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:09:23,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 17:09:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:23,802 INFO L225 Difference]: With dead ends: 11574 [2020-10-15 17:09:23,802 INFO L226 Difference]: Without dead ends: 11574 [2020-10-15 17:09:23,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2020-10-15 17:09:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 10068. [2020-10-15 17:09:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2020-10-15 17:09:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 46954 transitions. [2020-10-15 17:09:24,990 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 46954 transitions. Word has length 12 [2020-10-15 17:09:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:24,991 INFO L481 AbstractCegarLoop]: Abstraction has 10068 states and 46954 transitions. [2020-10-15 17:09:24,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:09:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 46954 transitions. [2020-10-15 17:09:24,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 17:09:24,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:24,992 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:24,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 17:09:24,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash -63994297, now seen corresponding path program 1 times [2020-10-15 17:09:24,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:24,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141234136] [2020-10-15 17:09:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:25,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141234136] [2020-10-15 17:09:25,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074800102] [2020-10-15 17:09:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 17:09:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:25,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 17:09:25,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 17:09:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:25,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 17:09:25,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-15 17:09:25,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269682521] [2020-10-15 17:09:25,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 17:09:25,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 17:09:25,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 17:09:25,179 INFO L87 Difference]: Start difference. First operand 10068 states and 46954 transitions. Second operand 6 states. [2020-10-15 17:09:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:25,290 INFO L93 Difference]: Finished difference Result 2132 states and 7715 transitions. [2020-10-15 17:09:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 17:09:25,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-15 17:09:25,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:25,299 INFO L225 Difference]: With dead ends: 2132 [2020-10-15 17:09:25,299 INFO L226 Difference]: Without dead ends: 2132 [2020-10-15 17:09:25,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 17:09:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-15 17:09:25,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1721. [2020-10-15 17:09:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-10-15 17:09:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 6117 transitions. [2020-10-15 17:09:25,362 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 6117 transitions. Word has length 13 [2020-10-15 17:09:25,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:25,362 INFO L481 AbstractCegarLoop]: Abstraction has 1721 states and 6117 transitions. [2020-10-15 17:09:25,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 17:09:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 6117 transitions. [2020-10-15 17:09:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 17:09:25,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:25,364 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:25,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-15 17:09:25,578 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:25,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:25,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1110490997, now seen corresponding path program 1 times [2020-10-15 17:09:25,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:25,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363118149] [2020-10-15 17:09:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 17:09:25,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363118149] [2020-10-15 17:09:25,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:25,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:25,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19795175] [2020-10-15 17:09:25,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:25,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:25,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:25,619 INFO L87 Difference]: Start difference. First operand 1721 states and 6117 transitions. Second operand 5 states. [2020-10-15 17:09:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:25,681 INFO L93 Difference]: Finished difference Result 2966 states and 10590 transitions. [2020-10-15 17:09:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:25,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 17:09:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:25,688 INFO L225 Difference]: With dead ends: 2966 [2020-10-15 17:09:25,688 INFO L226 Difference]: Without dead ends: 2966 [2020-10-15 17:09:25,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-10-15 17:09:25,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1991. [2020-10-15 17:09:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-10-15 17:09:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2020-10-15 17:09:25,751 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2020-10-15 17:09:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:25,751 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2020-10-15 17:09:25,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2020-10-15 17:09:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 17:09:25,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:25,753 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:25,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 17:09:25,753 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:09:25,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:25,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1594368647, now seen corresponding path program 1 times [2020-10-15 17:09:25,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:25,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415909766] [2020-10-15 17:09:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:25,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:09:25,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:09:25,773 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:09:25,773 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:09:25,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 17:09:25,774 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:09:25,774 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 17:09:25,783 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,783 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,786 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,786 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,787 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,787 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,787 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,787 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,787 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,787 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,788 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,788 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,788 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,788 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,788 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,788 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,788 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,790 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,790 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,790 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,790 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,804 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,804 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,806 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:09:25,807 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 17:09:25,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:09:25,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:09:25,808 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:09:25,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:09:25,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:09:25,808 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:09:25,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:09:25,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:09:25,809 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:09:25,809 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 88 transitions, 221 flow [2020-10-15 17:09:25,810 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 88 transitions, 221 flow [2020-10-15 17:09:25,810 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-10-15 17:09:25,829 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-10-15 17:09:25,829 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-15 17:09:25,831 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 397 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-10-15 17:09:25,837 INFO L117 LiptonReduction]: Number of co-enabled transitions 4940 [2020-10-15 17:09:26,292 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-10-15 17:09:27,628 INFO L132 LiptonReduction]: Checked pairs total: 12187 [2020-10-15 17:09:27,629 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-15 17:09:27,629 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 133 flow [2020-10-15 17:09:35,904 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2020-10-15 17:09:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2020-10-15 17:09:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 17:09:35,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:35,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:35,904 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:35,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1061986474, now seen corresponding path program 1 times [2020-10-15 17:09:35,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:35,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447480988] [2020-10-15 17:09:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:35,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447480988] [2020-10-15 17:09:35,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:35,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:35,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836204882] [2020-10-15 17:09:35,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:35,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:35,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:35,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:35,946 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2020-10-15 17:09:36,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:36,751 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2020-10-15 17:09:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:36,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-15 17:09:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:36,939 INFO L225 Difference]: With dead ends: 50507 [2020-10-15 17:09:36,939 INFO L226 Difference]: Without dead ends: 50507 [2020-10-15 17:09:36,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:40,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2020-10-15 17:09:41,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2020-10-15 17:09:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2020-10-15 17:09:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2020-10-15 17:09:41,780 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2020-10-15 17:09:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:41,780 INFO L481 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2020-10-15 17:09:41,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2020-10-15 17:09:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 17:09:41,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:41,782 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:41,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 17:09:41,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1633198036, now seen corresponding path program 1 times [2020-10-15 17:09:41,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:41,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734199673] [2020-10-15 17:09:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:09:41,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734199673] [2020-10-15 17:09:41,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:41,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:41,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703231166] [2020-10-15 17:09:41,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:09:41,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:41,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:09:41,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:41,882 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 4 states. [2020-10-15 17:09:43,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:43,191 INFO L93 Difference]: Finished difference Result 56104 states and 316572 transitions. [2020-10-15 17:09:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:09:43,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 17:09:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:43,485 INFO L225 Difference]: With dead ends: 56104 [2020-10-15 17:09:43,485 INFO L226 Difference]: Without dead ends: 56104 [2020-10-15 17:09:43,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56104 states. [2020-10-15 17:09:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56104 to 48029. [2020-10-15 17:09:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48029 states. [2020-10-15 17:09:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 271277 transitions. [2020-10-15 17:09:48,917 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 271277 transitions. Word has length 9 [2020-10-15 17:09:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:48,917 INFO L481 AbstractCegarLoop]: Abstraction has 48029 states and 271277 transitions. [2020-10-15 17:09:48,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:09:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 271277 transitions. [2020-10-15 17:09:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:09:48,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:48,918 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:48,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 17:09:48,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash 956422696, now seen corresponding path program 1 times [2020-10-15 17:09:48,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:48,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313131264] [2020-10-15 17:09:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:09:48,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313131264] [2020-10-15 17:09:48,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:48,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:48,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375817906] [2020-10-15 17:09:48,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:09:48,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:09:48,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:48,965 INFO L87 Difference]: Start difference. First operand 48029 states and 271277 transitions. Second operand 5 states. [2020-10-15 17:09:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:50,120 INFO L93 Difference]: Finished difference Result 60653 states and 341167 transitions. [2020-10-15 17:09:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:09:50,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 17:09:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:50,375 INFO L225 Difference]: With dead ends: 60653 [2020-10-15 17:09:50,376 INFO L226 Difference]: Without dead ends: 60653 [2020-10-15 17:09:50,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:09:51,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60653 states. [2020-10-15 17:09:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60653 to 50928. [2020-10-15 17:09:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50928 states. [2020-10-15 17:09:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50928 states to 50928 states and 287199 transitions. [2020-10-15 17:09:55,804 INFO L78 Accepts]: Start accepts. Automaton has 50928 states and 287199 transitions. Word has length 10 [2020-10-15 17:09:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:09:55,804 INFO L481 AbstractCegarLoop]: Abstraction has 50928 states and 287199 transitions. [2020-10-15 17:09:55,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:09:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 50928 states and 287199 transitions. [2020-10-15 17:09:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 17:09:55,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:09:55,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:09:55,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 17:09:55,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:09:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:09:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash -760702, now seen corresponding path program 1 times [2020-10-15 17:09:55,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:09:55,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224666130] [2020-10-15 17:09:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:09:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:09:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:09:55,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224666130] [2020-10-15 17:09:55,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:09:55,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:09:55,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658163859] [2020-10-15 17:09:55,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:09:55,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:09:55,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:09:55,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:55,873 INFO L87 Difference]: Start difference. First operand 50928 states and 287199 transitions. Second operand 4 states. [2020-10-15 17:09:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:09:56,537 INFO L93 Difference]: Finished difference Result 71415 states and 402930 transitions. [2020-10-15 17:09:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:09:56,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 17:09:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:09:56,824 INFO L225 Difference]: With dead ends: 71415 [2020-10-15 17:09:56,824 INFO L226 Difference]: Without dead ends: 71415 [2020-10-15 17:09:56,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:09:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71415 states. [2020-10-15 17:10:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71415 to 62439. [2020-10-15 17:10:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62439 states. [2020-10-15 17:10:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62439 states to 62439 states and 352729 transitions. [2020-10-15 17:10:04,083 INFO L78 Accepts]: Start accepts. Automaton has 62439 states and 352729 transitions. Word has length 12 [2020-10-15 17:10:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:10:04,083 INFO L481 AbstractCegarLoop]: Abstraction has 62439 states and 352729 transitions. [2020-10-15 17:10:04,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:10:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 62439 states and 352729 transitions. [2020-10-15 17:10:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 17:10:04,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:10:04,084 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:10:04,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 17:10:04,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:10:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:10:04,085 INFO L82 PathProgramCache]: Analyzing trace with hash -973447414, now seen corresponding path program 1 times [2020-10-15 17:10:04,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:10:04,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463460397] [2020-10-15 17:10:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:10:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:10:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:10:04,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463460397] [2020-10-15 17:10:04,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898490186] [2020-10-15 17:10:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 17:10:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:10:04,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 17:10:04,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 17:10:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:10:04,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 17:10:04,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-15 17:10:04,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905891146] [2020-10-15 17:10:04,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 17:10:04,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:10:04,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 17:10:04,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 17:10:04,221 INFO L87 Difference]: Start difference. First operand 62439 states and 352729 transitions. Second operand 6 states. [2020-10-15 17:10:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:10:04,401 INFO L93 Difference]: Finished difference Result 8161 states and 34918 transitions. [2020-10-15 17:10:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 17:10:04,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-15 17:10:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:10:04,421 INFO L225 Difference]: With dead ends: 8161 [2020-10-15 17:10:04,421 INFO L226 Difference]: Without dead ends: 8161 [2020-10-15 17:10:04,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 17:10:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2020-10-15 17:10:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 6538. [2020-10-15 17:10:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-10-15 17:10:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2020-10-15 17:10:04,625 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2020-10-15 17:10:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:10:04,625 INFO L481 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2020-10-15 17:10:04,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 17:10:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2020-10-15 17:10:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 17:10:04,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:10:04,626 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:10:04,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 17:10:04,832 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:10:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:10:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1037380060, now seen corresponding path program 1 times [2020-10-15 17:10:04,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:10:04,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815375860] [2020-10-15 17:10:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:10:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:10:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 17:10:04,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815375860] [2020-10-15 17:10:04,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:10:04,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:10:04,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108628282] [2020-10-15 17:10:04,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:10:04,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:10:04,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:10:04,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:10:04,874 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2020-10-15 17:10:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:10:05,023 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2020-10-15 17:10:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:10:05,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 17:10:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:10:05,067 INFO L225 Difference]: With dead ends: 11626 [2020-10-15 17:10:05,067 INFO L226 Difference]: Without dead ends: 11626 [2020-10-15 17:10:05,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:10:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2020-10-15 17:10:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2020-10-15 17:10:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2020-10-15 17:10:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2020-10-15 17:10:05,321 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2020-10-15 17:10:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:10:05,321 INFO L481 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2020-10-15 17:10:05,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:10:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2020-10-15 17:10:05,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 17:10:05,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:10:05,323 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:10:05,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 17:10:05,323 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:10:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:10:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash -489841492, now seen corresponding path program 1 times [2020-10-15 17:10:05,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:10:05,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11244425] [2020-10-15 17:10:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:10:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:10:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 17:10:05,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11244425] [2020-10-15 17:10:05,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:10:05,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:10:05,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989396526] [2020-10-15 17:10:05,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:10:05,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:10:05,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:10:05,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:10:05,390 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2020-10-15 17:10:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:10:05,477 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2020-10-15 17:10:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:10:05,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 17:10:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:10:05,494 INFO L225 Difference]: With dead ends: 6970 [2020-10-15 17:10:05,495 INFO L226 Difference]: Without dead ends: 6970 [2020-10-15 17:10:05,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:10:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-10-15 17:10:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2020-10-15 17:10:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2020-10-15 17:10:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2020-10-15 17:10:05,672 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2020-10-15 17:10:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:10:05,672 INFO L481 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2020-10-15 17:10:05,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:10:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2020-10-15 17:10:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 17:10:05,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:10:05,674 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:10:05,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 17:10:05,674 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:10:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:10:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1100110844, now seen corresponding path program 1 times [2020-10-15 17:10:05,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:10:05,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277755880] [2020-10-15 17:10:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:10:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:10:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 17:10:05,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277755880] [2020-10-15 17:10:05,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:10:05,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:10:05,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165948028] [2020-10-15 17:10:05,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:10:05,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:10:05,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:10:05,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:10:05,776 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2020-10-15 17:10:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:10:05,899 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2020-10-15 17:10:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:10:05,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 17:10:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:10:05,926 INFO L225 Difference]: With dead ends: 10825 [2020-10-15 17:10:05,926 INFO L226 Difference]: Without dead ends: 10825 [2020-10-15 17:10:05,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:10:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2020-10-15 17:10:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2020-10-15 17:10:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2020-10-15 17:10:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2020-10-15 17:10:06,144 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2020-10-15 17:10:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:10:06,144 INFO L481 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2020-10-15 17:10:06,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:10:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2020-10-15 17:10:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 17:10:06,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:10:06,148 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:10:06,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 17:10:06,148 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:10:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:10:06,148 INFO L82 PathProgramCache]: Analyzing trace with hash -475239234, now seen corresponding path program 1 times [2020-10-15 17:10:06,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:10:06,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947350845] [2020-10-15 17:10:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:10:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:10:06,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:10:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:10:06,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:10:06,168 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:10:06,168 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:10:06,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 17:10:06,169 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:10:06,169 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 17:10:06,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:10:06,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-15 17:10:06,209 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:10:06,209 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:10:06,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:10:06,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:10:06,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:10:06,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:10:06,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:10:06,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:10:06,210 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:10:06,211 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 264 flow [2020-10-15 17:10:06,211 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 102 transitions, 264 flow [2020-10-15 17:10:06,211 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-10-15 17:10:06,229 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-10-15 17:10:06,230 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-15 17:10:06,232 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 462 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-10-15 17:10:06,239 INFO L117 LiptonReduction]: Number of co-enabled transitions 7020 [2020-10-15 17:10:08,511 INFO L132 LiptonReduction]: Checked pairs total: 20409 [2020-10-15 17:10:08,512 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-15 17:10:08,512 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 166 flow [2020-10-15 17:15:21,735 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 270604 states. [2020-10-15 17:15:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 270604 states. [2020-10-15 17:15:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 17:15:21,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:15:21,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:15:21,736 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:15:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:15:21,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1232360898, now seen corresponding path program 1 times [2020-10-15 17:15:21,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:15:21,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189672749] [2020-10-15 17:15:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:15:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:15:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:15:21,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189672749] [2020-10-15 17:15:21,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:15:21,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:15:21,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26850785] [2020-10-15 17:15:21,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:15:21,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:15:21,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:15:21,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:15:21,790 INFO L87 Difference]: Start difference. First operand 270604 states. Second operand 5 states. [2020-10-15 17:15:34,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:15:34,462 INFO L93 Difference]: Finished difference Result 283913 states and 1878243 transitions. [2020-10-15 17:15:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:15:34,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-15 17:15:34,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:15:35,733 INFO L225 Difference]: With dead ends: 283913 [2020-10-15 17:15:35,733 INFO L226 Difference]: Without dead ends: 283913 [2020-10-15 17:15:35,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:16:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283913 states. [2020-10-15 17:16:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283913 to 232423. [2020-10-15 17:16:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232423 states. [2020-10-15 17:16:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232423 states to 232423 states and 1542529 transitions. [2020-10-15 17:16:26,530 INFO L78 Accepts]: Start accepts. Automaton has 232423 states and 1542529 transitions. Word has length 7 [2020-10-15 17:16:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:16:26,530 INFO L481 AbstractCegarLoop]: Abstraction has 232423 states and 1542529 transitions. [2020-10-15 17:16:26,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:16:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 232423 states and 1542529 transitions. [2020-10-15 17:16:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 17:16:26,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:16:26,531 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:16:26,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 17:16:26,531 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:16:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:16:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1112151552, now seen corresponding path program 1 times [2020-10-15 17:16:26,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:16:26,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481541101] [2020-10-15 17:16:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:16:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:16:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:16:26,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481541101] [2020-10-15 17:16:26,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:16:26,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:16:26,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552703746] [2020-10-15 17:16:26,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:16:26,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:16:26,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:16:26,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:16:26,593 INFO L87 Difference]: Start difference. First operand 232423 states and 1542529 transitions. Second operand 4 states. [2020-10-15 17:16:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:16:29,812 INFO L93 Difference]: Finished difference Result 334390 states and 2219305 transitions. [2020-10-15 17:16:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:16:29,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 17:16:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:16:48,743 INFO L225 Difference]: With dead ends: 334390 [2020-10-15 17:16:48,743 INFO L226 Difference]: Without dead ends: 334390 [2020-10-15 17:16:48,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:17:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334390 states. [2020-10-15 17:17:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334390 to 289718. [2020-10-15 17:17:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289718 states. [2020-10-15 17:17:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289718 states to 289718 states and 1923958 transitions. [2020-10-15 17:17:26,575 INFO L78 Accepts]: Start accepts. Automaton has 289718 states and 1923958 transitions. Word has length 9 [2020-10-15 17:17:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:17:26,575 INFO L481 AbstractCegarLoop]: Abstraction has 289718 states and 1923958 transitions. [2020-10-15 17:17:26,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:17:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 289718 states and 1923958 transitions. [2020-10-15 17:17:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:17:26,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:17:26,576 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:17:26,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 17:17:26,577 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:17:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:17:26,577 INFO L82 PathProgramCache]: Analyzing trace with hash 338611599, now seen corresponding path program 1 times [2020-10-15 17:17:26,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:17:26,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893053410] [2020-10-15 17:17:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:17:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:17:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:17:26,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893053410] [2020-10-15 17:17:26,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:17:26,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:17:26,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885380100] [2020-10-15 17:17:26,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:17:26,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:17:26,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:17:26,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:17:26,633 INFO L87 Difference]: Start difference. First operand 289718 states and 1923958 transitions. Second operand 5 states. [2020-10-15 17:17:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:17:44,261 INFO L93 Difference]: Finished difference Result 350111 states and 2318007 transitions. [2020-10-15 17:17:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:17:44,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 17:17:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:17:45,896 INFO L225 Difference]: With dead ends: 350111 [2020-10-15 17:17:45,896 INFO L226 Difference]: Without dead ends: 350111 [2020-10-15 17:17:45,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:18:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350111 states. [2020-10-15 17:18:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350111 to 301623. [2020-10-15 17:18:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301623 states. [2020-10-15 17:18:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301623 states to 301623 states and 2001033 transitions. [2020-10-15 17:18:30,606 INFO L78 Accepts]: Start accepts. Automaton has 301623 states and 2001033 transitions. Word has length 10 [2020-10-15 17:18:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:18:30,607 INFO L481 AbstractCegarLoop]: Abstraction has 301623 states and 2001033 transitions. [2020-10-15 17:18:30,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:18:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 301623 states and 2001033 transitions. [2020-10-15 17:18:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 17:18:30,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:18:30,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:18:30,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 17:18:30,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:18:30,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:18:30,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1011762542, now seen corresponding path program 1 times [2020-10-15 17:18:30,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:18:30,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558183948] [2020-10-15 17:18:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:18:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:18:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:18:30,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558183948] [2020-10-15 17:18:30,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:18:30,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:18:30,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749705571] [2020-10-15 17:18:30,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:18:30,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:18:30,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:18:30,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:18:30,668 INFO L87 Difference]: Start difference. First operand 301623 states and 2001033 transitions. Second operand 4 states. [2020-10-15 17:18:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:18:50,224 INFO L93 Difference]: Finished difference Result 431622 states and 2863908 transitions. [2020-10-15 17:18:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:18:50,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 17:18:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:18:53,929 INFO L225 Difference]: With dead ends: 431622 [2020-10-15 17:18:53,930 INFO L226 Difference]: Without dead ends: 431622 [2020-10-15 17:18:53,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:19:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431622 states. [2020-10-15 17:19:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431622 to 378924. [2020-10-15 17:19:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378924 states. [2020-10-15 17:19:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378924 states to 378924 states and 2516131 transitions. [2020-10-15 17:19:51,274 INFO L78 Accepts]: Start accepts. Automaton has 378924 states and 2516131 transitions. Word has length 12 [2020-10-15 17:19:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:19:51,275 INFO L481 AbstractCegarLoop]: Abstraction has 378924 states and 2516131 transitions. [2020-10-15 17:19:51,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:19:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 378924 states and 2516131 transitions. [2020-10-15 17:19:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 17:19:51,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:19:51,276 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:19:51,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 17:19:51,276 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:19:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:19:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash -742979976, now seen corresponding path program 1 times [2020-10-15 17:19:51,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:19:51,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521500717] [2020-10-15 17:19:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:19:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:19:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:19:51,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521500717] [2020-10-15 17:19:51,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010165490] [2020-10-15 17:19:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 17:19:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:19:51,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 17:19:51,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 17:19:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:19:51,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 17:19:51,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-15 17:19:51,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895605073] [2020-10-15 17:19:51,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 17:19:51,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:19:51,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 17:19:51,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 17:19:51,422 INFO L87 Difference]: Start difference. First operand 378924 states and 2516131 transitions. Second operand 6 states. [2020-10-15 17:19:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:19:51,769 INFO L93 Difference]: Finished difference Result 29742 states and 146940 transitions. [2020-10-15 17:19:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 17:19:51,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-15 17:19:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:19:51,853 INFO L225 Difference]: With dead ends: 29742 [2020-10-15 17:19:51,853 INFO L226 Difference]: Without dead ends: 29742 [2020-10-15 17:19:51,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 17:19:52,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29742 states. [2020-10-15 17:19:53,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29742 to 23691. [2020-10-15 17:19:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23691 states. [2020-10-15 17:19:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23691 states to 23691 states and 115698 transitions. [2020-10-15 17:19:53,121 INFO L78 Accepts]: Start accepts. Automaton has 23691 states and 115698 transitions. Word has length 13 [2020-10-15 17:19:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:19:53,121 INFO L481 AbstractCegarLoop]: Abstraction has 23691 states and 115698 transitions. [2020-10-15 17:19:53,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 17:19:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 23691 states and 115698 transitions. [2020-10-15 17:19:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 17:19:53,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:19:53,122 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:19:53,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 17:19:53,328 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:19:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:19:53,328 INFO L82 PathProgramCache]: Analyzing trace with hash 508059146, now seen corresponding path program 1 times [2020-10-15 17:19:53,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:19:53,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291620166] [2020-10-15 17:19:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:19:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:19:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 17:19:53,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291620166] [2020-10-15 17:19:53,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:19:53,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:19:53,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72513410] [2020-10-15 17:19:53,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:19:53,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:19:53,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:19:53,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:19:53,370 INFO L87 Difference]: Start difference. First operand 23691 states and 115698 transitions. Second operand 5 states. [2020-10-15 17:19:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:19:53,675 INFO L93 Difference]: Finished difference Result 42981 states and 209508 transitions. [2020-10-15 17:19:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:19:53,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 17:19:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:19:53,798 INFO L225 Difference]: With dead ends: 42981 [2020-10-15 17:19:53,798 INFO L226 Difference]: Without dead ends: 42981 [2020-10-15 17:19:53,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:19:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42981 states. [2020-10-15 17:19:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42981 to 26337. [2020-10-15 17:19:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26337 states. [2020-10-15 17:19:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26337 states to 26337 states and 128676 transitions. [2020-10-15 17:19:58,673 INFO L78 Accepts]: Start accepts. Automaton has 26337 states and 128676 transitions. Word has length 13 [2020-10-15 17:19:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:19:58,673 INFO L481 AbstractCegarLoop]: Abstraction has 26337 states and 128676 transitions. [2020-10-15 17:19:58,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:19:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 26337 states and 128676 transitions. [2020-10-15 17:19:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 17:19:58,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:19:58,674 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:19:58,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 17:19:58,679 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:19:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:19:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1381432313, now seen corresponding path program 1 times [2020-10-15 17:19:58,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:19:58,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223109056] [2020-10-15 17:19:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:19:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:19:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 17:19:58,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223109056] [2020-10-15 17:19:58,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:19:58,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:19:58,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131340741] [2020-10-15 17:19:58,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:19:58,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:19:58,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:19:58,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:19:58,763 INFO L87 Difference]: Start difference. First operand 26337 states and 128676 transitions. Second operand 4 states. [2020-10-15 17:19:58,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:19:58,965 INFO L93 Difference]: Finished difference Result 25014 states and 122187 transitions. [2020-10-15 17:19:58,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:19:58,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 17:19:58,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:19:59,034 INFO L225 Difference]: With dead ends: 25014 [2020-10-15 17:19:59,034 INFO L226 Difference]: Without dead ends: 25014 [2020-10-15 17:19:59,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:19:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25014 states. [2020-10-15 17:20:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25014 to 22368. [2020-10-15 17:20:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22368 states. [2020-10-15 17:20:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22368 states to 22368 states and 109209 transitions. [2020-10-15 17:20:00,118 INFO L78 Accepts]: Start accepts. Automaton has 22368 states and 109209 transitions. Word has length 15 [2020-10-15 17:20:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:20:00,118 INFO L481 AbstractCegarLoop]: Abstraction has 22368 states and 109209 transitions. [2020-10-15 17:20:00,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:20:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 22368 states and 109209 transitions. [2020-10-15 17:20:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 17:20:00,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:20:00,120 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:20:00,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 17:20:00,120 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:20:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:20:00,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1113234386, now seen corresponding path program 1 times [2020-10-15 17:20:00,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:20:00,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147127089] [2020-10-15 17:20:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:20:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:20:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 17:20:00,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147127089] [2020-10-15 17:20:00,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:20:00,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:20:00,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958549386] [2020-10-15 17:20:00,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:20:00,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:20:00,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:20:00,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:20:00,169 INFO L87 Difference]: Start difference. First operand 22368 states and 109209 transitions. Second operand 5 states. [2020-10-15 17:20:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:20:00,501 INFO L93 Difference]: Finished difference Result 40695 states and 198579 transitions. [2020-10-15 17:20:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:20:00,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 17:20:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:20:00,617 INFO L225 Difference]: With dead ends: 40695 [2020-10-15 17:20:00,617 INFO L226 Difference]: Without dead ends: 40695 [2020-10-15 17:20:00,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:20:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40695 states. [2020-10-15 17:20:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40695 to 24960. [2020-10-15 17:20:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24960 states. [2020-10-15 17:20:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24960 states to 24960 states and 122007 transitions. [2020-10-15 17:20:07,568 INFO L78 Accepts]: Start accepts. Automaton has 24960 states and 122007 transitions. Word has length 16 [2020-10-15 17:20:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:20:07,568 INFO L481 AbstractCegarLoop]: Abstraction has 24960 states and 122007 transitions. [2020-10-15 17:20:07,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:20:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 24960 states and 122007 transitions. [2020-10-15 17:20:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 17:20:07,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:20:07,572 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:20:07,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 17:20:07,572 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:20:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:20:07,573 INFO L82 PathProgramCache]: Analyzing trace with hash 371361058, now seen corresponding path program 1 times [2020-10-15 17:20:07,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:20:07,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853886654] [2020-10-15 17:20:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:20:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:20:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 17:20:07,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853886654] [2020-10-15 17:20:07,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:20:07,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:20:07,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702973640] [2020-10-15 17:20:07,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:20:07,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:20:07,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:20:07,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:20:07,639 INFO L87 Difference]: Start difference. First operand 24960 states and 122007 transitions. Second operand 4 states. [2020-10-15 17:20:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:20:07,817 INFO L93 Difference]: Finished difference Result 23664 states and 115608 transitions. [2020-10-15 17:20:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:20:07,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-15 17:20:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:20:07,882 INFO L225 Difference]: With dead ends: 23664 [2020-10-15 17:20:07,883 INFO L226 Difference]: Without dead ends: 23664 [2020-10-15 17:20:07,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:20:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23664 states. [2020-10-15 17:20:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23664 to 21072. [2020-10-15 17:20:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21072 states. [2020-10-15 17:20:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 102810 transitions. [2020-10-15 17:20:08,895 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 102810 transitions. Word has length 18 [2020-10-15 17:20:08,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:20:08,895 INFO L481 AbstractCegarLoop]: Abstraction has 21072 states and 102810 transitions. [2020-10-15 17:20:08,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:20:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 102810 transitions. [2020-10-15 17:20:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 17:20:08,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:20:08,898 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:20:08,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 17:20:08,898 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:20:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:20:08,899 INFO L82 PathProgramCache]: Analyzing trace with hash 745940009, now seen corresponding path program 1 times [2020-10-15 17:20:08,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:20:08,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591953657] [2020-10-15 17:20:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:20:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:20:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-15 17:20:08,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591953657] [2020-10-15 17:20:08,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:20:08,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:20:08,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444938815] [2020-10-15 17:20:08,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 17:20:08,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:20:08,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 17:20:08,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:20:08,959 INFO L87 Difference]: Start difference. First operand 21072 states and 102810 transitions. Second operand 5 states. [2020-10-15 17:20:09,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:20:09,268 INFO L93 Difference]: Finished difference Result 38184 states and 186699 transitions. [2020-10-15 17:20:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 17:20:09,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 17:20:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:20:09,391 INFO L225 Difference]: With dead ends: 38184 [2020-10-15 17:20:09,391 INFO L226 Difference]: Without dead ends: 38184 [2020-10-15 17:20:09,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 17:20:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38184 states. [2020-10-15 17:20:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38184 to 23502. [2020-10-15 17:20:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23502 states. [2020-10-15 17:20:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23502 states to 23502 states and 114960 transitions. [2020-10-15 17:20:11,212 INFO L78 Accepts]: Start accepts. Automaton has 23502 states and 114960 transitions. Word has length 19 [2020-10-15 17:20:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:20:11,212 INFO L481 AbstractCegarLoop]: Abstraction has 23502 states and 114960 transitions. [2020-10-15 17:20:11,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 17:20:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 23502 states and 114960 transitions. [2020-10-15 17:20:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 17:20:11,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:20:11,219 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:20:11,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 17:20:11,219 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:20:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:20:11,219 INFO L82 PathProgramCache]: Analyzing trace with hash -411186623, now seen corresponding path program 1 times [2020-10-15 17:20:11,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:20:11,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77840366] [2020-10-15 17:20:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:20:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:20:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-15 17:20:11,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77840366] [2020-10-15 17:20:11,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:20:11,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 17:20:11,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201088517] [2020-10-15 17:20:11,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 17:20:11,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:20:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 17:20:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:20:11,269 INFO L87 Difference]: Start difference. First operand 23502 states and 114960 transitions. Second operand 4 states. [2020-10-15 17:20:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:20:11,447 INFO L93 Difference]: Finished difference Result 22287 states and 108885 transitions. [2020-10-15 17:20:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 17:20:11,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-15 17:20:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:20:11,508 INFO L225 Difference]: With dead ends: 22287 [2020-10-15 17:20:11,508 INFO L226 Difference]: Without dead ends: 22287 [2020-10-15 17:20:11,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 17:20:12,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22287 states. [2020-10-15 17:20:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22287 to 19857. [2020-10-15 17:20:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19857 states. [2020-10-15 17:20:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19857 states to 19857 states and 96735 transitions. [2020-10-15 17:20:12,456 INFO L78 Accepts]: Start accepts. Automaton has 19857 states and 96735 transitions. Word has length 21 [2020-10-15 17:20:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:20:12,456 INFO L481 AbstractCegarLoop]: Abstraction has 19857 states and 96735 transitions. [2020-10-15 17:20:12,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 17:20:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 19857 states and 96735 transitions. [2020-10-15 17:20:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 17:20:12,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:20:12,464 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:20:12,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 17:20:12,464 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:20:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:20:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash -603092677, now seen corresponding path program 1 times [2020-10-15 17:20:12,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:20:12,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767831683] [2020-10-15 17:20:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:20:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:20:12,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:20:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:20:12,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:20:12,483 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:20:12,483 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:20:12,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 17:20:12,484 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:20:12,484 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-15 17:20:12,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:20:12,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-15 17:20:12,536 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:20:12,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:20:12,536 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:20:12,536 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:20:12,536 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:20:12,536 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:20:12,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:20:12,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:20:12,537 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:20:12,538 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 116 transitions, 309 flow [2020-10-15 17:20:12,538 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 116 transitions, 309 flow [2020-10-15 17:20:12,538 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 116 places, 116 transitions, 309 flow [2020-10-15 17:20:12,559 INFO L129 PetriNetUnfolder]: 22/178 cut-off events. [2020-10-15 17:20:12,560 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-15 17:20:12,562 INFO L80 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 178 events. 22/178 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 560 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 188. Up to 16 conditions per place. [2020-10-15 17:20:12,573 INFO L117 LiptonReduction]: Number of co-enabled transitions 9464 [2020-10-15 17:20:14,632 INFO L132 LiptonReduction]: Checked pairs total: 23761 [2020-10-15 17:20:14,633 INFO L134 LiptonReduction]: Total number of compositions: 81 [2020-10-15 17:20:14,633 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 58 transitions, 193 flow Received shutdown request... [2020-10-15 17:20:54,841 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-15 17:20:54,843 WARN L235 ceAbstractionStarter]: Timeout [2020-10-15 17:20:54,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 05:20:54 BasicIcfg [2020-10-15 17:20:54,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 17:20:54,845 INFO L168 Benchmark]: Toolchain (without parser) took 701716.03 ms. Allocated memory was 252.2 MB in the beginning and 6.8 GB in the end (delta: 6.5 GB). Free memory was 207.3 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 3.8 GB. Max. memory is 14.2 GB. [2020-10-15 17:20:54,845 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 17:20:54,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.66 ms. Allocated memory was 252.2 MB in the beginning and 317.2 MB in the end (delta: 65.0 MB). Free memory was 207.3 MB in the beginning and 273.1 MB in the end (delta: -65.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-15 17:20:54,846 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.15 ms. Allocated memory is still 317.2 MB. Free memory was 273.1 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 17:20:54,846 INFO L168 Benchmark]: Boogie Preprocessor took 24.98 ms. Allocated memory is still 317.2 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 17:20:54,847 INFO L168 Benchmark]: RCFGBuilder took 494.34 ms. Allocated memory is still 317.2 MB. Free memory was 270.6 MB in the beginning and 248.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 17:20:54,847 INFO L168 Benchmark]: TraceAbstraction took 700410.84 ms. Allocated memory was 317.2 MB in the beginning and 6.8 GB in the end (delta: 6.4 GB). Free memory was 248.7 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 3.8 GB. Max. memory is 14.2 GB. [2020-10-15 17:20:54,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 718.66 ms. Allocated memory was 252.2 MB in the beginning and 317.2 MB in the end (delta: 65.0 MB). Free memory was 207.3 MB in the beginning and 273.1 MB in the end (delta: -65.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 62.15 ms. Allocated memory is still 317.2 MB. Free memory was 273.1 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.98 ms. Allocated memory is still 317.2 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 494.34 ms. Allocated memory is still 317.2 MB. Free memory was 270.6 MB in the beginning and 248.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 700410.84 ms. Allocated memory was 317.2 MB in the beginning and 6.8 GB in the end (delta: 6.4 GB). Free memory was 248.7 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 3.8 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 159 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 32 PlacesBefore, 12 PlacesAfterwards, 32 TransitionsBefore, 10 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 30 TotalNumberOfCompositions, 259 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 586 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 96 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 46 PlacesBefore, 22 PlacesAfterwards, 46 TransitionsBefore, 21 TransitionsAfterwards, 884 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 1787 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1103 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 164 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 60 PlacesBefore, 30 PlacesAfterwards, 60 TransitionsBefore, 27 TransitionsAfterwards, 1872 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 43 TotalNumberOfCompositions, 4048 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1882 VarBasedMoverChecksPositive, 86 VarBasedMoverChecksNegative, 33 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 275 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 74 PlacesBefore, 38 PlacesAfterwards, 74 TransitionsBefore, 35 TransitionsAfterwards, 3224 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 52 TotalNumberOfCompositions, 7163 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2879 VarBasedMoverChecksPositive, 190 VarBasedMoverChecksNegative, 117 SemBasedMoverChecksPositive, 73 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 360 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 88 PlacesBefore, 46 PlacesAfterwards, 88 TransitionsBefore, 44 TransitionsAfterwards, 4940 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 12187 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4725 VarBasedMoverChecksPositive, 256 VarBasedMoverChecksNegative, 159 SemBasedMoverChecksPositive, 97 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.2s, 704 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 102 PlacesBefore, 54 PlacesAfterwards, 102 TransitionsBefore, 53 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 20409 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 5117 VarBasedMoverChecksPositive, 239 VarBasedMoverChecksNegative, 133 SemBasedMoverChecksPositive, 106 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 549 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 116 PlacesBefore, 62 PlacesAfterwards, 116 TransitionsBefore, 58 TransitionsAfterwards, 9464 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 23761 MoverChecksTotal - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 690). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 62 places, 58 transitions, 193 flow. Already constructed 132510 states. Currently 40989 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 700.0s, OverallIterations: 38, TraceHistogramMax: 7, AutomataDifference: 88.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 372.3s, HoareTripleCheckerStatistics: 1902 SDtfs, 1594 SDslu, 2474 SDs, 0 SdLazy, 2172 SolverSat, 183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=378924occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 235.3s AutomataMinimizationTime, 32 MinimizatonAttempts, 315382 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 21730 SizeOfPredicates, 3 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 35 InterpolantComputations, 29 PerfectInterpolantSequences, 173/185 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