/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-eaa536417960c97dc4122e532ee2691877b99d76-eaa5364 [2021-10-16 23:06:52,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 23:06:52,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 23:06:53,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-16 23:06:53,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 23:06:53,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 23:06:53,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 23:06:53,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 23:06:53,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 23:06:53,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 23:06:53,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 23:06:53,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 23:06:53,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 23:06:53,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 23:06:53,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 23:06:53,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 23:06:53,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-16 23:06:53,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 23:06:53,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 23:06:53,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 23:06:53,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-10-16 23:06:53,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 23:06:53,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 23:06:53,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 23:06:53,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 23:06:53,095 INFO L138 SettingsManager]: * Use SBE=true [2021-10-16 23:06:53,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 23:06:53,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 23:06:53,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 23:06:53,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 23:06:53,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 23:06:53,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 23:06:53,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 23:06:53,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 23:06:53,096 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 23:06:53,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 23:06:53,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 23:06:53,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 23:06:53,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 23:06:53,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-16 23:06:53,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-16 23:06:53,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false [2021-10-16 23:06:53,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 23:06:53,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 23:06:53,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 23:06:53,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 23:06:53,293 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 23:06:53,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i [2021-10-16 23:06:53,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9503c8865/b179ff14ef244aafa3c6d8a04c196949/FLAG483a14390 [2021-10-16 23:06:53,719 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 23:06:53,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i [2021-10-16 23:06:53,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9503c8865/b179ff14ef244aafa3c6d8a04c196949/FLAG483a14390 [2021-10-16 23:06:54,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9503c8865/b179ff14ef244aafa3c6d8a04c196949 [2021-10-16 23:06:54,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 23:06:54,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-16 23:06:54,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 23:06:54,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 23:06:54,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 23:06:54,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225aadc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54, skipping insertion in model container [2021-10-16 23:06:54,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 23:06:54,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 23:06:54,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 23:06:54,530 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 23:06:54,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 23:06:54,612 INFO L208 MainTranslator]: Completed translation [2021-10-16 23:06:54,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54 WrapperNode [2021-10-16 23:06:54,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 23:06:54,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 23:06:54,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 23:06:54,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 23:06:54,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 23:06:54,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 23:06:54,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 23:06:54,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 23:06:54,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 23:06:54,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 23:06:54,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 23:06:54,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 23:06:54,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (1/1) ... [2021-10-16 23:06:54,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 23:06:54,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:54,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 23:06:54,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 23:06:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 23:06:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 23:06:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 23:06:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 23:06:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-16 23:06:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-10-16 23:06:54,775 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-10-16 23:06:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 23:06:54,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 23:06:54,776 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 23:06:55,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 23:06:55,062 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-16 23:06:55,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:06:55 BoogieIcfgContainer [2021-10-16 23:06:55,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 23:06:55,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 23:06:55,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 23:06:55,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 23:06:55,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:06:54" (1/3) ... [2021-10-16 23:06:55,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ad48ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:06:55, skipping insertion in model container [2021-10-16 23:06:55,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:54" (2/3) ... [2021-10-16 23:06:55,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ad48ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:06:55, skipping insertion in model container [2021-10-16 23:06:55,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:06:55" (3/3) ... [2021-10-16 23:06:55,069 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2021-10-16 23:06:55,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 23:06:55,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 23:06:55,072 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 23:06:55,109 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,109 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,109 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,110 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,110 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,110 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,110 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,110 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,111 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,111 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,111 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,111 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,111 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,111 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,111 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,112 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,113 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,113 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,113 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,113 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,113 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,114 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,114 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,114 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,114 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,115 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,115 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,115 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,115 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,115 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,115 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,116 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,116 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,116 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,116 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,116 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,117 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,117 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,117 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,118 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,118 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,118 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,118 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,118 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,119 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,120 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,120 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,120 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,120 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,120 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,120 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,121 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,122 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,122 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,122 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,122 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,122 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,122 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,123 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,123 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,123 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,123 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,123 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,123 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,124 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,125 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,125 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,125 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,125 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,125 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,125 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,126 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,127 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,129 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,129 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,133 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,134 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,134 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,134 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,134 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,135 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,135 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,135 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,136 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,137 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,138 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,139 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,139 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,139 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,139 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,139 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,140 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,141 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,144 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,144 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,144 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,145 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,145 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,145 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,145 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,145 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,146 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,146 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,146 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,146 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,146 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,146 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,146 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:55,150 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-16 23:06:55,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 23:06:55,192 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 23:06:55,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 23:06:55,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 97 transitions, 199 flow [2021-10-16 23:06:55,250 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-10-16 23:06:55,251 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:55,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 96 events. 6/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2021-10-16 23:06:55,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 97 transitions, 199 flow [2021-10-16 23:06:55,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 96 transitions, 195 flow [2021-10-16 23:06:55,295 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2021-10-16 23:06:55,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:55,295 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:55,296 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:55,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:55,301 INFO L82 PathProgramCache]: Analyzing trace with hash -502423986, now seen corresponding path program 1 times [2021-10-16 23:06:55,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:55,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794426021] [2021-10-16 23:06:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:55,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:55,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:55,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794426021] [2021-10-16 23:06:55,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794426021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:55,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 23:06:55,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 23:06:55,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797848967] [2021-10-16 23:06:55,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 23:06:55,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:55,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 23:06:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 23:06:55,471 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 97 [2021-10-16 23:06:55,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 195 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:55,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 97 [2021-10-16 23:06:55,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:55,510 INFO L129 PetriNetUnfolder]: 3/93 cut-off events. [2021-10-16 23:06:55,510 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:55,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 93 events. 3/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 3/91 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-10-16 23:06:55,513 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 0 selfloop transitions, 0 changer transitions 0/93 dead transitions. [2021-10-16 23:06:55,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 189 flow [2021-10-16 23:06:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 23:06:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-16 23:06:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 191 transitions. [2021-10-16 23:06:55,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9845360824742269 [2021-10-16 23:06:55,520 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 191 transitions. [2021-10-16 23:06:55,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 191 transitions. [2021-10-16 23:06:55,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:55,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 191 transitions. [2021-10-16 23:06:55,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,531 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,532 INFO L186 Difference]: Start difference. First operand has 94 places, 96 transitions, 195 flow. Second operand 2 states and 191 transitions. [2021-10-16 23:06:55,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 189 flow [2021-10-16 23:06:55,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 93 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-16 23:06:55,538 INFO L242 Difference]: Finished difference. Result has 94 places, 93 transitions, 188 flow [2021-10-16 23:06:55,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2021-10-16 23:06:55,542 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2021-10-16 23:06:55,542 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 188 flow [2021-10-16 23:06:55,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:55,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:55,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 23:06:55,543 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash -928312095, now seen corresponding path program 1 times [2021-10-16 23:06:55,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:55,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205039697] [2021-10-16 23:06:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:55,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:55,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:55,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205039697] [2021-10-16 23:06:55,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205039697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:55,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 23:06:55,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 23:06:55,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627908627] [2021-10-16 23:06:55,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 23:06:55,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 23:06:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 23:06:55,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 97 [2021-10-16 23:06:55,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:55,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 97 [2021-10-16 23:06:55,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:55,649 INFO L129 PetriNetUnfolder]: 3/97 cut-off events. [2021-10-16 23:06:55,650 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:55,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 97 events. 3/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 110. Up to 8 conditions per place. [2021-10-16 23:06:55,652 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 9 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2021-10-16 23:06:55,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 218 flow [2021-10-16 23:06:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 23:06:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-16 23:06:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2021-10-16 23:06:55,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9381443298969072 [2021-10-16 23:06:55,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2021-10-16 23:06:55,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2021-10-16 23:06:55,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:55,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2021-10-16 23:06:55,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,662 INFO L186 Difference]: Start difference. First operand has 94 places, 93 transitions, 188 flow. Second operand 3 states and 273 transitions. [2021-10-16 23:06:55,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 218 flow [2021-10-16 23:06:55,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-16 23:06:55,665 INFO L242 Difference]: Finished difference. Result has 97 places, 94 transitions, 200 flow [2021-10-16 23:06:55,665 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2021-10-16 23:06:55,665 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2021-10-16 23:06:55,666 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 200 flow [2021-10-16 23:06:55,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,666 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:55,666 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:55,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 23:06:55,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:55,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1025285627, now seen corresponding path program 1 times [2021-10-16 23:06:55,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:55,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534877338] [2021-10-16 23:06:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:55,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:55,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:55,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534877338] [2021-10-16 23:06:55,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534877338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:55,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214596078] [2021-10-16 23:06:55,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:55,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:55,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:55,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:55,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 23:06:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:55,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 23:06:55,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:55,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214596078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:55,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:55,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-16 23:06:55,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117120090] [2021-10-16 23:06:55,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 23:06:55,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 23:06:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 23:06:55,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:06:55,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:55,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:55,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:06:55,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:56,051 INFO L129 PetriNetUnfolder]: 3/102 cut-off events. [2021-10-16 23:06:56,052 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-16 23:06:56,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 102 events. 3/102 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 127. Up to 9 conditions per place. [2021-10-16 23:06:56,054 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 12 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2021-10-16 23:06:56,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 252 flow [2021-10-16 23:06:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 23:06:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-16 23:06:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 534 transitions. [2021-10-16 23:06:56,055 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9175257731958762 [2021-10-16 23:06:56,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 534 transitions. [2021-10-16 23:06:56,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 534 transitions. [2021-10-16 23:06:56,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:56,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 534 transitions. [2021-10-16 23:06:56,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,059 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,059 INFO L186 Difference]: Start difference. First operand has 97 places, 94 transitions, 200 flow. Second operand 6 states and 534 transitions. [2021-10-16 23:06:56,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 252 flow [2021-10-16 23:06:56,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-16 23:06:56,065 INFO L242 Difference]: Finished difference. Result has 104 places, 97 transitions, 230 flow [2021-10-16 23:06:56,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2021-10-16 23:06:56,065 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 10 predicate places. [2021-10-16 23:06:56,066 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 230 flow [2021-10-16 23:06:56,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:56,066 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:56,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 23:06:56,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:56,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:56,276 INFO L82 PathProgramCache]: Analyzing trace with hash 239184737, now seen corresponding path program 2 times [2021-10-16 23:06:56,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:56,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133280173] [2021-10-16 23:06:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:56,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:56,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:56,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133280173] [2021-10-16 23:06:56,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133280173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:56,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475933516] [2021-10-16 23:06:56,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:06:56,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:56,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:56,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:56,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 23:06:56,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 23:06:56,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:56,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 23:06:56,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:56,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 23:06:56,547 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 23:06:56,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 23:06:56,587 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-16 23:06:56,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-10-16 23:06:56,644 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-10-16 23:06:56,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-10-16 23:06:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 23:06:56,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475933516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:56,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:06:56,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-10-16 23:06:56,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625115020] [2021-10-16 23:06:56,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 23:06:56,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 23:06:56,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-16 23:06:56,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 97 [2021-10-16 23:06:56,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:56,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 97 [2021-10-16 23:06:56,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:56,916 INFO L129 PetriNetUnfolder]: 260/1097 cut-off events. [2021-10-16 23:06:56,916 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-10-16 23:06:56,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1640 conditions, 1097 events. 260/1097 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6894 event pairs, 122 based on Foata normal form. 0/1023 useless extension candidates. Maximal degree in co-relation 1632. Up to 441 conditions per place. [2021-10-16 23:06:56,921 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 36 selfloop transitions, 38 changer transitions 0/142 dead transitions. [2021-10-16 23:06:56,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 142 transitions, 468 flow [2021-10-16 23:06:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 23:06:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-16 23:06:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 465 transitions. [2021-10-16 23:06:56,924 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7989690721649485 [2021-10-16 23:06:56,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 465 transitions. [2021-10-16 23:06:56,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 465 transitions. [2021-10-16 23:06:56,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:56,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 465 transitions. [2021-10-16 23:06:56,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.5) internal successors, (465), 6 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,927 INFO L186 Difference]: Start difference. First operand has 104 places, 97 transitions, 230 flow. Second operand 6 states and 465 transitions. [2021-10-16 23:06:56,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 142 transitions, 468 flow [2021-10-16 23:06:56,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 142 transitions, 462 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-16 23:06:56,930 INFO L242 Difference]: Finished difference. Result has 112 places, 134 transitions, 478 flow [2021-10-16 23:06:56,930 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=478, PETRI_PLACES=112, PETRI_TRANSITIONS=134} [2021-10-16 23:06:56,930 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 18 predicate places. [2021-10-16 23:06:56,930 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 134 transitions, 478 flow [2021-10-16 23:06:56,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:56,931 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:56,931 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:56,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:57,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-16 23:06:57,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:57,147 INFO L82 PathProgramCache]: Analyzing trace with hash 676388973, now seen corresponding path program 1 times [2021-10-16 23:06:57,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:57,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875258733] [2021-10-16 23:06:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:57,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:57,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:57,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875258733] [2021-10-16 23:06:57,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875258733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:57,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219178302] [2021-10-16 23:06:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:57,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:57,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:57,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:57,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 23:06:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:57,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 23:06:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:57,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219178302] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:57,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:57,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-16 23:06:57,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789698805] [2021-10-16 23:06:57,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:06:57,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:06:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-16 23:06:57,380 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:06:57,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 478 flow. Second operand has 9 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:57,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:57,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:06:57,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:57,486 INFO L129 PetriNetUnfolder]: 89/474 cut-off events. [2021-10-16 23:06:57,487 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-10-16 23:06:57,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 474 events. 89/474 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2098 event pairs, 8 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 806. Up to 104 conditions per place. [2021-10-16 23:06:57,489 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 14 selfloop transitions, 8 changer transitions 0/144 dead transitions. [2021-10-16 23:06:57,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 144 transitions, 552 flow [2021-10-16 23:06:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 23:06:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-16 23:06:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 797 transitions. [2021-10-16 23:06:57,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129438717067583 [2021-10-16 23:06:57,491 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 797 transitions. [2021-10-16 23:06:57,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 797 transitions. [2021-10-16 23:06:57,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:57,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 797 transitions. [2021-10-16 23:06:57,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:57,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:57,494 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:57,495 INFO L186 Difference]: Start difference. First operand has 112 places, 134 transitions, 478 flow. Second operand 9 states and 797 transitions. [2021-10-16 23:06:57,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 144 transitions, 552 flow [2021-10-16 23:06:57,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 144 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-16 23:06:57,508 INFO L242 Difference]: Finished difference. Result has 123 places, 137 transitions, 522 flow [2021-10-16 23:06:57,509 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=522, PETRI_PLACES=123, PETRI_TRANSITIONS=137} [2021-10-16 23:06:57,509 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 29 predicate places. [2021-10-16 23:06:57,509 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 137 transitions, 522 flow [2021-10-16 23:06:57,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:57,510 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:57,510 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:57,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:57,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:57,724 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:57,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1987448977, now seen corresponding path program 2 times [2021-10-16 23:06:57,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:57,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844143679] [2021-10-16 23:06:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:57,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:57,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:57,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844143679] [2021-10-16 23:06:57,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844143679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:57,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503587289] [2021-10-16 23:06:57,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:06:57,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:57,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:57,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 23:06:57,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 23:06:57,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:57,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 23:06:57,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:57,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 23:06:57,992 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 23:06:57,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 23:06:58,018 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-16 23:06:58,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-10-16 23:06:58,058 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-10-16 23:06:58,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-10-16 23:06:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 23:06:58,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503587289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:58,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:06:58,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-10-16 23:06:58,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210604077] [2021-10-16 23:06:58,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 23:06:58,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:58,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 23:06:58,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-16 23:06:58,078 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2021-10-16 23:06:58,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 137 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:58,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2021-10-16 23:06:58,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:58,251 INFO L129 PetriNetUnfolder]: 357/1317 cut-off events. [2021-10-16 23:06:58,251 INFO L130 PetriNetUnfolder]: For 314/317 co-relation queries the response was YES. [2021-10-16 23:06:58,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 1317 events. 357/1317 cut-off events. For 314/317 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8457 event pairs, 103 based on Foata normal form. 0/1257 useless extension candidates. Maximal degree in co-relation 2641. Up to 604 conditions per place. [2021-10-16 23:06:58,258 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 68 selfloop transitions, 48 changer transitions 0/189 dead transitions. [2021-10-16 23:06:58,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 189 transitions, 954 flow [2021-10-16 23:06:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 23:06:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-16 23:06:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 470 transitions. [2021-10-16 23:06:58,260 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8075601374570447 [2021-10-16 23:06:58,260 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 470 transitions. [2021-10-16 23:06:58,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 470 transitions. [2021-10-16 23:06:58,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:58,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 470 transitions. [2021-10-16 23:06:58,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.33333333333333) internal successors, (470), 6 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,262 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,262 INFO L186 Difference]: Start difference. First operand has 123 places, 137 transitions, 522 flow. Second operand 6 states and 470 transitions. [2021-10-16 23:06:58,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 189 transitions, 954 flow [2021-10-16 23:06:58,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 189 transitions, 936 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-10-16 23:06:58,267 INFO L242 Difference]: Finished difference. Result has 128 places, 180 transitions, 892 flow [2021-10-16 23:06:58,267 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=892, PETRI_PLACES=128, PETRI_TRANSITIONS=180} [2021-10-16 23:06:58,268 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 34 predicate places. [2021-10-16 23:06:58,268 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 180 transitions, 892 flow [2021-10-16 23:06:58,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,268 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:58,268 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:58,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:58,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:58,494 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:58,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1162627006, now seen corresponding path program 1 times [2021-10-16 23:06:58,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:58,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75679138] [2021-10-16 23:06:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:58,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:58,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:58,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75679138] [2021-10-16 23:06:58,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75679138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:58,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262976286] [2021-10-16 23:06:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:58,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:58,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:58,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:58,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 23:06:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:58,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 23:06:58,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:58,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262976286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:58,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:58,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-16 23:06:58,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177282924] [2021-10-16 23:06:58,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 23:06:58,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 23:06:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-16 23:06:58,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:06:58,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 180 transitions, 892 flow. Second operand has 11 states, 11 states have (on average 88.0909090909091) internal successors, (969), 11 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:58,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:06:58,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:58,951 INFO L129 PetriNetUnfolder]: 177/798 cut-off events. [2021-10-16 23:06:58,951 INFO L130 PetriNetUnfolder]: For 328/330 co-relation queries the response was YES. [2021-10-16 23:06:58,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 798 events. 177/798 cut-off events. For 328/330 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4498 event pairs, 12 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 1699. Up to 158 conditions per place. [2021-10-16 23:06:58,956 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 16 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2021-10-16 23:06:58,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 192 transitions, 988 flow [2021-10-16 23:06:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 23:06:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-16 23:06:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1060 transitions. [2021-10-16 23:06:58,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9106529209621993 [2021-10-16 23:06:58,958 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1060 transitions. [2021-10-16 23:06:58,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1060 transitions. [2021-10-16 23:06:58,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:58,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1060 transitions. [2021-10-16 23:06:58,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.33333333333333) internal successors, (1060), 12 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,962 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,962 INFO L186 Difference]: Start difference. First operand has 128 places, 180 transitions, 892 flow. Second operand 12 states and 1060 transitions. [2021-10-16 23:06:58,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 192 transitions, 988 flow [2021-10-16 23:06:58,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 192 transitions, 970 flow, removed 9 selfloop flow, removed 0 redundant places. [2021-10-16 23:06:58,969 INFO L242 Difference]: Finished difference. Result has 142 places, 183 transitions, 930 flow [2021-10-16 23:06:58,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=930, PETRI_PLACES=142, PETRI_TRANSITIONS=183} [2021-10-16 23:06:58,969 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 48 predicate places. [2021-10-16 23:06:58,969 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 183 transitions, 930 flow [2021-10-16 23:06:58,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 88.0909090909091) internal successors, (969), 11 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:58,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:58,970 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:58,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:59,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:59,187 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:59,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:59,187 INFO L82 PathProgramCache]: Analyzing trace with hash 772778614, now seen corresponding path program 2 times [2021-10-16 23:06:59,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:59,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540007368] [2021-10-16 23:06:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:59,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:59,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:59,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540007368] [2021-10-16 23:06:59,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540007368] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:59,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566700242] [2021-10-16 23:06:59,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:06:59,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:59,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:59,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:59,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 23:06:59,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 23:06:59,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:59,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:06:59,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:59,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:06:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-16 23:06:59,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566700242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:59,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:06:59,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-10-16 23:06:59,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515566405] [2021-10-16 23:06:59,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:06:59,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:06:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-16 23:06:59,568 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:06:59,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 183 transitions, 930 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:59,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:59,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:06:59,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:00,766 INFO L129 PetriNetUnfolder]: 2342/6244 cut-off events. [2021-10-16 23:07:00,766 INFO L130 PetriNetUnfolder]: For 4142/4146 co-relation queries the response was YES. [2021-10-16 23:07:00,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16546 conditions, 6244 events. 2342/6244 cut-off events. For 4142/4146 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 47040 event pairs, 263 based on Foata normal form. 14/6084 useless extension candidates. Maximal degree in co-relation 16522. Up to 1436 conditions per place. [2021-10-16 23:07:00,804 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 652 selfloop transitions, 38 changer transitions 5/749 dead transitions. [2021-10-16 23:07:00,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 749 transitions, 5288 flow [2021-10-16 23:07:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 23:07:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-16 23:07:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1145 transitions. [2021-10-16 23:07:00,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6557846506300115 [2021-10-16 23:07:00,807 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1145 transitions. [2021-10-16 23:07:00,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1145 transitions. [2021-10-16 23:07:00,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:00,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1145 transitions. [2021-10-16 23:07:00,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 63.611111111111114) internal successors, (1145), 18 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:00,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:00,811 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:00,811 INFO L186 Difference]: Start difference. First operand has 142 places, 183 transitions, 930 flow. Second operand 18 states and 1145 transitions. [2021-10-16 23:07:00,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 749 transitions, 5288 flow [2021-10-16 23:07:00,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 749 transitions, 5258 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-10-16 23:07:00,837 INFO L242 Difference]: Finished difference. Result has 162 places, 224 transitions, 1154 flow [2021-10-16 23:07:00,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1154, PETRI_PLACES=162, PETRI_TRANSITIONS=224} [2021-10-16 23:07:00,837 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 68 predicate places. [2021-10-16 23:07:00,837 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 224 transitions, 1154 flow [2021-10-16 23:07:00,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:00,837 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:00,837 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:00,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:01,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:01,052 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:01,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:01,052 INFO L82 PathProgramCache]: Analyzing trace with hash 133590152, now seen corresponding path program 3 times [2021-10-16 23:07:01,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:01,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884459620] [2021-10-16 23:07:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:01,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:01,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:01,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884459620] [2021-10-16 23:07:01,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884459620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:01,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562479534] [2021-10-16 23:07:01,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 23:07:01,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:01,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:01,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:01,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 23:07:01,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-16 23:07:01,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:01,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:07:01,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:01,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:07:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-16 23:07:01,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562479534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:01,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:01,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-10-16 23:07:01,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892898801] [2021-10-16 23:07:01,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:07:01,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:01,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:07:01,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-16 23:07:01,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:01,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 224 transitions, 1154 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:01,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:01,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:01,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:03,696 INFO L129 PetriNetUnfolder]: 4636/12499 cut-off events. [2021-10-16 23:07:03,696 INFO L130 PetriNetUnfolder]: For 11463/11533 co-relation queries the response was YES. [2021-10-16 23:07:03,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35378 conditions, 12499 events. 4636/12499 cut-off events. For 11463/11533 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 105133 event pairs, 561 based on Foata normal form. 100/12550 useless extension candidates. Maximal degree in co-relation 35343. Up to 2406 conditions per place. [2021-10-16 23:07:03,783 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 747 selfloop transitions, 100 changer transitions 10/911 dead transitions. [2021-10-16 23:07:03,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 911 transitions, 6624 flow [2021-10-16 23:07:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-16 23:07:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-16 23:07:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1776 transitions. [2021-10-16 23:07:03,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5906218822746924 [2021-10-16 23:07:03,787 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1776 transitions. [2021-10-16 23:07:03,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1776 transitions. [2021-10-16 23:07:03,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:03,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1776 transitions. [2021-10-16 23:07:03,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 57.29032258064516) internal successors, (1776), 31 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:03,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 97.0) internal successors, (3104), 32 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:03,794 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 97.0) internal successors, (3104), 32 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:03,794 INFO L186 Difference]: Start difference. First operand has 162 places, 224 transitions, 1154 flow. Second operand 31 states and 1776 transitions. [2021-10-16 23:07:03,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 911 transitions, 6624 flow [2021-10-16 23:07:03,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 911 transitions, 6624 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-16 23:07:03,841 INFO L242 Difference]: Finished difference. Result has 220 places, 304 transitions, 1954 flow [2021-10-16 23:07:03,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1954, PETRI_PLACES=220, PETRI_TRANSITIONS=304} [2021-10-16 23:07:03,841 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 126 predicate places. [2021-10-16 23:07:03,841 INFO L470 AbstractCegarLoop]: Abstraction has has 220 places, 304 transitions, 1954 flow [2021-10-16 23:07:03,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:03,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:03,842 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:03,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-16 23:07:04,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:04,058 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:04,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1688932782, now seen corresponding path program 1 times [2021-10-16 23:07:04,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:04,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116137075] [2021-10-16 23:07:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:04,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:04,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:04,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116137075] [2021-10-16 23:07:04,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116137075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:04,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311059330] [2021-10-16 23:07:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:04,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:04,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:04,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:04,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 23:07:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:04,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 23:07:04,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:04,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311059330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:04,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:07:04,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-16 23:07:04,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620346785] [2021-10-16 23:07:04,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 23:07:04,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 23:07:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-16 23:07:04,406 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:07:04,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 304 transitions, 1954 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:04,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:04,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:07:04,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:05,102 INFO L129 PetriNetUnfolder]: 1309/5431 cut-off events. [2021-10-16 23:07:05,103 INFO L130 PetriNetUnfolder]: For 3777/3912 co-relation queries the response was YES. [2021-10-16 23:07:05,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13332 conditions, 5431 events. 1309/5431 cut-off events. For 3777/3912 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 47030 event pairs, 111 based on Foata normal form. 8/5397 useless extension candidates. Maximal degree in co-relation 13268. Up to 1196 conditions per place. [2021-10-16 23:07:05,144 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 18 selfloop transitions, 14 changer transitions 0/318 dead transitions. [2021-10-16 23:07:05,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 318 transitions, 2072 flow [2021-10-16 23:07:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 23:07:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-16 23:07:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1323 transitions. [2021-10-16 23:07:05,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9092783505154639 [2021-10-16 23:07:05,147 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1323 transitions. [2021-10-16 23:07:05,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1323 transitions. [2021-10-16 23:07:05,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:05,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1323 transitions. [2021-10-16 23:07:05,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.2) internal successors, (1323), 15 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:05,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:05,152 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:05,152 INFO L186 Difference]: Start difference. First operand has 220 places, 304 transitions, 1954 flow. Second operand 15 states and 1323 transitions. [2021-10-16 23:07:05,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 318 transitions, 2072 flow [2021-10-16 23:07:05,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 318 transitions, 2070 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-10-16 23:07:05,189 INFO L242 Difference]: Finished difference. Result has 237 places, 307 transitions, 2020 flow [2021-10-16 23:07:05,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2020, PETRI_PLACES=237, PETRI_TRANSITIONS=307} [2021-10-16 23:07:05,190 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 143 predicate places. [2021-10-16 23:07:05,190 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 307 transitions, 2020 flow [2021-10-16 23:07:05,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:05,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:05,203 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:05,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:05,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-16 23:07:05,404 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:05,404 INFO L82 PathProgramCache]: Analyzing trace with hash -721144276, now seen corresponding path program 4 times [2021-10-16 23:07:05,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:05,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466680805] [2021-10-16 23:07:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:05,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:05,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:05,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466680805] [2021-10-16 23:07:05,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466680805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:05,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824806309] [2021-10-16 23:07:05,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 23:07:05,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:05,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:05,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 23:07:05,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 23:07:05,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:05,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 23:07:05,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:05,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824806309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:05,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:07:05,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-16 23:07:05,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945553368] [2021-10-16 23:07:05,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 23:07:05,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 23:07:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-16 23:07:05,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:07:05,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 307 transitions, 2020 flow. Second operand has 15 states, 15 states have (on average 88.2) internal successors, (1323), 15 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:05,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:05,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:07:05,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:06,591 INFO L129 PetriNetUnfolder]: 1309/5436 cut-off events. [2021-10-16 23:07:06,591 INFO L130 PetriNetUnfolder]: For 3821/3956 co-relation queries the response was YES. [2021-10-16 23:07:06,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13365 conditions, 5436 events. 1309/5436 cut-off events. For 3821/3956 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 47117 event pairs, 111 based on Foata normal form. 8/5402 useless extension candidates. Maximal degree in co-relation 13297. Up to 1196 conditions per place. [2021-10-16 23:07:06,633 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 20 selfloop transitions, 17 changer transitions 0/323 dead transitions. [2021-10-16 23:07:06,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 323 transitions, 2160 flow [2021-10-16 23:07:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 23:07:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-16 23:07:06,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1586 transitions. [2021-10-16 23:07:06,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9083619702176403 [2021-10-16 23:07:06,636 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1586 transitions. [2021-10-16 23:07:06,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1586 transitions. [2021-10-16 23:07:06,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:06,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1586 transitions. [2021-10-16 23:07:06,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 88.11111111111111) internal successors, (1586), 18 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:06,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:06,641 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:06,641 INFO L186 Difference]: Start difference. First operand has 237 places, 307 transitions, 2020 flow. Second operand 18 states and 1586 transitions. [2021-10-16 23:07:06,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 323 transitions, 2160 flow [2021-10-16 23:07:06,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 323 transitions, 2118 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-10-16 23:07:06,677 INFO L242 Difference]: Finished difference. Result has 246 places, 310 transitions, 2058 flow [2021-10-16 23:07:06,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2058, PETRI_PLACES=246, PETRI_TRANSITIONS=310} [2021-10-16 23:07:06,677 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 152 predicate places. [2021-10-16 23:07:06,678 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 310 transitions, 2058 flow [2021-10-16 23:07:06,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 88.2) internal successors, (1323), 15 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:06,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:06,678 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:06,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:06,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:06,891 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:06,892 INFO L82 PathProgramCache]: Analyzing trace with hash -427421816, now seen corresponding path program 5 times [2021-10-16 23:07:06,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:06,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066999986] [2021-10-16 23:07:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:06,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:07,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:07,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066999986] [2021-10-16 23:07:07,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066999986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:07,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726521463] [2021-10-16 23:07:07,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 23:07:07,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:07,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:07,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 23:07:07,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-16 23:07:07,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:07,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 23:07:07,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:07,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726521463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:07,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:07:07,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-16 23:07:07,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210049587] [2021-10-16 23:07:07,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 23:07:07,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:07,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 23:07:07,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-16 23:07:07,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:07:07,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 310 transitions, 2058 flow. Second operand has 17 states, 17 states have (on average 88.23529411764706) internal successors, (1500), 17 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:07,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:07,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:07:07,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:08,071 INFO L129 PetriNetUnfolder]: 1309/5441 cut-off events. [2021-10-16 23:07:08,071 INFO L130 PetriNetUnfolder]: For 3876/4011 co-relation queries the response was YES. [2021-10-16 23:07:08,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13398 conditions, 5441 events. 1309/5441 cut-off events. For 3876/4011 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 47045 event pairs, 111 based on Foata normal form. 8/5407 useless extension candidates. Maximal degree in co-relation 13327. Up to 1196 conditions per place. [2021-10-16 23:07:08,122 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 22 selfloop transitions, 20 changer transitions 0/328 dead transitions. [2021-10-16 23:07:08,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 328 transitions, 2220 flow [2021-10-16 23:07:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 23:07:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-16 23:07:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1849 transitions. [2021-10-16 23:07:08,124 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.907707412862052 [2021-10-16 23:07:08,124 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1849 transitions. [2021-10-16 23:07:08,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1849 transitions. [2021-10-16 23:07:08,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:08,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1849 transitions. [2021-10-16 23:07:08,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 88.04761904761905) internal successors, (1849), 21 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:08,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:08,129 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:08,129 INFO L186 Difference]: Start difference. First operand has 246 places, 310 transitions, 2058 flow. Second operand 21 states and 1849 transitions. [2021-10-16 23:07:08,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 328 transitions, 2220 flow [2021-10-16 23:07:08,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 328 transitions, 2166 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-10-16 23:07:08,169 INFO L242 Difference]: Finished difference. Result has 255 places, 313 transitions, 2096 flow [2021-10-16 23:07:08,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2096, PETRI_PLACES=255, PETRI_TRANSITIONS=313} [2021-10-16 23:07:08,170 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 161 predicate places. [2021-10-16 23:07:08,170 INFO L470 AbstractCegarLoop]: Abstraction has has 255 places, 313 transitions, 2096 flow [2021-10-16 23:07:08,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 88.23529411764706) internal successors, (1500), 17 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:08,170 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:08,170 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:08,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:08,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-16 23:07:08,386 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:08,386 INFO L82 PathProgramCache]: Analyzing trace with hash -160877776, now seen corresponding path program 6 times [2021-10-16 23:07:08,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:08,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688284370] [2021-10-16 23:07:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:08,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:08,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:08,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688284370] [2021-10-16 23:07:08,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688284370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:08,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321208703] [2021-10-16 23:07:08,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 23:07:08,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:08,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:08,504 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:08,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 23:07:08,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-16 23:07:08,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:07:08,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:08,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:07:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-10-16 23:07:08,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321208703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:08,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:08,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 24 [2021-10-16 23:07:08,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236200671] [2021-10-16 23:07:08,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:07:08,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:07:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-10-16 23:07:08,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:08,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 313 transitions, 2096 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:08,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:08,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:08,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:11,893 INFO L129 PetriNetUnfolder]: 5311/14140 cut-off events. [2021-10-16 23:07:11,893 INFO L130 PetriNetUnfolder]: For 20199/20305 co-relation queries the response was YES. [2021-10-16 23:07:11,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44117 conditions, 14140 events. 5311/14140 cut-off events. For 20199/20305 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 120086 event pairs, 770 based on Foata normal form. 69/14153 useless extension candidates. Maximal degree in co-relation 44043. Up to 2924 conditions per place. [2021-10-16 23:07:12,010 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 822 selfloop transitions, 109 changer transitions 7/1001 dead transitions. [2021-10-16 23:07:12,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1001 transitions, 7974 flow [2021-10-16 23:07:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-16 23:07:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-16 23:07:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1464 transitions. [2021-10-16 23:07:12,013 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6562079784849844 [2021-10-16 23:07:12,013 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1464 transitions. [2021-10-16 23:07:12,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1464 transitions. [2021-10-16 23:07:12,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:12,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1464 transitions. [2021-10-16 23:07:12,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 63.65217391304348) internal successors, (1464), 23 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:12,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 97.0) internal successors, (2328), 24 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:12,017 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 97.0) internal successors, (2328), 24 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:12,017 INFO L186 Difference]: Start difference. First operand has 255 places, 313 transitions, 2096 flow. Second operand 23 states and 1464 transitions. [2021-10-16 23:07:12,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1001 transitions, 7974 flow [2021-10-16 23:07:12,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1001 transitions, 7908 flow, removed 16 selfloop flow, removed 17 redundant places. [2021-10-16 23:07:12,213 INFO L242 Difference]: Finished difference. Result has 269 places, 342 transitions, 2618 flow [2021-10-16 23:07:12,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2618, PETRI_PLACES=269, PETRI_TRANSITIONS=342} [2021-10-16 23:07:12,214 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 175 predicate places. [2021-10-16 23:07:12,214 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 342 transitions, 2618 flow [2021-10-16 23:07:12,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:12,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:12,214 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:12,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-16 23:07:12,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-16 23:07:12,427 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:12,428 INFO L82 PathProgramCache]: Analyzing trace with hash -423073530, now seen corresponding path program 7 times [2021-10-16 23:07:12,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:12,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377217317] [2021-10-16 23:07:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:12,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:12,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:12,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377217317] [2021-10-16 23:07:12,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377217317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:12,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514377406] [2021-10-16 23:07:12,548 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 23:07:12,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:12,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:12,549 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:12,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 23:07:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:12,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 23:07:12,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:12,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514377406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:12,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:07:12,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-16 23:07:12,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888994605] [2021-10-16 23:07:12,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 23:07:12,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 23:07:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-16 23:07:12,952 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:07:12,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 342 transitions, 2618 flow. Second operand has 19 states, 19 states have (on average 88.26315789473684) internal successors, (1677), 19 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:12,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:12,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:07:12,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:13,934 INFO L129 PetriNetUnfolder]: 1516/6207 cut-off events. [2021-10-16 23:07:13,934 INFO L130 PetriNetUnfolder]: For 6863/7024 co-relation queries the response was YES. [2021-10-16 23:07:13,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16025 conditions, 6207 events. 1516/6207 cut-off events. For 6863/7024 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 54829 event pairs, 126 based on Foata normal form. 11/6169 useless extension candidates. Maximal degree in co-relation 15942. Up to 1367 conditions per place. [2021-10-16 23:07:13,980 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 24 selfloop transitions, 23 changer transitions 0/362 dead transitions. [2021-10-16 23:07:13,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 362 transitions, 2802 flow [2021-10-16 23:07:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-16 23:07:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-16 23:07:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2112 transitions. [2021-10-16 23:07:13,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9072164948453608 [2021-10-16 23:07:13,989 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2112 transitions. [2021-10-16 23:07:13,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2112 transitions. [2021-10-16 23:07:13,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:13,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2112 transitions. [2021-10-16 23:07:14,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 88.0) internal successors, (2112), 24 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:14,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 97.0) internal successors, (2425), 25 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:14,053 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 97.0) internal successors, (2425), 25 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:14,053 INFO L186 Difference]: Start difference. First operand has 269 places, 342 transitions, 2618 flow. Second operand 24 states and 2112 transitions. [2021-10-16 23:07:14,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 362 transitions, 2802 flow [2021-10-16 23:07:14,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 362 transitions, 2642 flow, removed 29 selfloop flow, removed 8 redundant places. [2021-10-16 23:07:14,102 INFO L242 Difference]: Finished difference. Result has 287 places, 345 transitions, 2562 flow [2021-10-16 23:07:14,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2562, PETRI_PLACES=287, PETRI_TRANSITIONS=345} [2021-10-16 23:07:14,102 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 193 predicate places. [2021-10-16 23:07:14,102 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 345 transitions, 2562 flow [2021-10-16 23:07:14,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 88.26315789473684) internal successors, (1677), 19 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:14,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:14,103 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:14,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:14,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-16 23:07:14,319 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1659564804, now seen corresponding path program 8 times [2021-10-16 23:07:14,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:14,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49527669] [2021-10-16 23:07:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:14,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:14,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:14,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49527669] [2021-10-16 23:07:14,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49527669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:14,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022934187] [2021-10-16 23:07:14,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:07:14,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:14,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:14,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 23:07:14,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 23:07:14,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:14,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:07:14,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:14,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:07:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-16 23:07:14,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022934187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:14,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:14,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2021-10-16 23:07:14,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000828743] [2021-10-16 23:07:14,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:07:14,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:07:14,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-10-16 23:07:14,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:14,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 345 transitions, 2562 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:14,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:14,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:14,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:18,327 INFO L129 PetriNetUnfolder]: 6024/16038 cut-off events. [2021-10-16 23:07:18,328 INFO L130 PetriNetUnfolder]: For 31482/31611 co-relation queries the response was YES. [2021-10-16 23:07:18,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52004 conditions, 16038 events. 6024/16038 cut-off events. For 31482/31611 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 139819 event pairs, 897 based on Foata normal form. 78/16052 useless extension candidates. Maximal degree in co-relation 51918. Up to 3124 conditions per place. [2021-10-16 23:07:18,472 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 963 selfloop transitions, 118 changer transitions 6/1153 dead transitions. [2021-10-16 23:07:18,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1153 transitions, 9650 flow [2021-10-16 23:07:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-16 23:07:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-16 23:07:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1514 transitions. [2021-10-16 23:07:18,474 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6786194531600179 [2021-10-16 23:07:18,474 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1514 transitions. [2021-10-16 23:07:18,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1514 transitions. [2021-10-16 23:07:18,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:18,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1514 transitions. [2021-10-16 23:07:18,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 65.82608695652173) internal successors, (1514), 23 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:18,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 97.0) internal successors, (2328), 24 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:18,479 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 97.0) internal successors, (2328), 24 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:18,479 INFO L186 Difference]: Start difference. First operand has 287 places, 345 transitions, 2562 flow. Second operand 23 states and 1514 transitions. [2021-10-16 23:07:18,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1153 transitions, 9650 flow [2021-10-16 23:07:18,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1153 transitions, 9572 flow, removed 19 selfloop flow, removed 20 redundant places. [2021-10-16 23:07:18,643 INFO L242 Difference]: Finished difference. Result has 298 places, 380 transitions, 3264 flow [2021-10-16 23:07:18,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3264, PETRI_PLACES=298, PETRI_TRANSITIONS=380} [2021-10-16 23:07:18,643 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 204 predicate places. [2021-10-16 23:07:18,643 INFO L470 AbstractCegarLoop]: Abstraction has has 298 places, 380 transitions, 3264 flow [2021-10-16 23:07:18,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:18,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:18,644 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:18,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:18,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-16 23:07:18,858 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:18,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:18,858 INFO L82 PathProgramCache]: Analyzing trace with hash 683622242, now seen corresponding path program 9 times [2021-10-16 23:07:18,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:18,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704623541] [2021-10-16 23:07:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:18,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:18,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:18,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704623541] [2021-10-16 23:07:18,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704623541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:18,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429138530] [2021-10-16 23:07:18,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 23:07:18,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:18,999 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:19,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 23:07:19,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-16 23:07:19,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:19,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:07:19,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:19,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:07:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-16 23:07:19,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429138530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:19,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:19,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2021-10-16 23:07:19,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345798507] [2021-10-16 23:07:19,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:07:19,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:07:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-10-16 23:07:19,537 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:19,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 380 transitions, 3264 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:19,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:19,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:19,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:23,725 INFO L129 PetriNetUnfolder]: 6947/18696 cut-off events. [2021-10-16 23:07:23,725 INFO L130 PetriNetUnfolder]: For 50809/50991 co-relation queries the response was YES. [2021-10-16 23:07:23,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63043 conditions, 18696 events. 6947/18696 cut-off events. For 50809/50991 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 170063 event pairs, 877 based on Foata normal form. 88/18703 useless extension candidates. Maximal degree in co-relation 62948. Up to 3197 conditions per place. [2021-10-16 23:07:23,916 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 984 selfloop transitions, 174 changer transitions 8/1232 dead transitions. [2021-10-16 23:07:23,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1232 transitions, 11443 flow [2021-10-16 23:07:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-16 23:07:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-16 23:07:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1922 transitions. [2021-10-16 23:07:23,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6192010309278351 [2021-10-16 23:07:23,918 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1922 transitions. [2021-10-16 23:07:23,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1922 transitions. [2021-10-16 23:07:23,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:23,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1922 transitions. [2021-10-16 23:07:23,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 60.0625) internal successors, (1922), 32 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:23,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 97.0) internal successors, (3201), 33 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:23,923 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 97.0) internal successors, (3201), 33 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:23,923 INFO L186 Difference]: Start difference. First operand has 298 places, 380 transitions, 3264 flow. Second operand 32 states and 1922 transitions. [2021-10-16 23:07:23,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1232 transitions, 11443 flow [2021-10-16 23:07:24,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1232 transitions, 11121 flow, removed 101 selfloop flow, removed 7 redundant places. [2021-10-16 23:07:24,319 INFO L242 Difference]: Finished difference. Result has 346 places, 452 transitions, 4586 flow [2021-10-16 23:07:24,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4586, PETRI_PLACES=346, PETRI_TRANSITIONS=452} [2021-10-16 23:07:24,319 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 252 predicate places. [2021-10-16 23:07:24,319 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 452 transitions, 4586 flow [2021-10-16 23:07:24,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:24,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:24,320 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:24,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:24,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:24,523 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:24,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1749953948, now seen corresponding path program 2 times [2021-10-16 23:07:24,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:24,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629114309] [2021-10-16 23:07:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:24,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:24,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:24,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629114309] [2021-10-16 23:07:24,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629114309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:24,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414445553] [2021-10-16 23:07:24,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:07:24,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:24,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:24,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:24,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 23:07:25,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 23:07:25,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:25,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:07:25,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:25,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:07:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-16 23:07:25,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414445553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:25,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:25,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2021-10-16 23:07:25,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883512445] [2021-10-16 23:07:25,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:07:25,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:07:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-10-16 23:07:25,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:25,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 452 transitions, 4586 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:25,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:25,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:25,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:30,050 INFO L129 PetriNetUnfolder]: 7696/20439 cut-off events. [2021-10-16 23:07:30,050 INFO L130 PetriNetUnfolder]: For 73881/74045 co-relation queries the response was YES. [2021-10-16 23:07:30,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72580 conditions, 20439 events. 7696/20439 cut-off events. For 73881/74045 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 188045 event pairs, 1592 based on Foata normal form. 83/20432 useless extension candidates. Maximal degree in co-relation 72461. Up to 3957 conditions per place. [2021-10-16 23:07:30,285 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 956 selfloop transitions, 155 changer transitions 2/1179 dead transitions. [2021-10-16 23:07:30,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1179 transitions, 11545 flow [2021-10-16 23:07:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-16 23:07:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-16 23:07:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1270 transitions. [2021-10-16 23:07:30,287 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6890938686923495 [2021-10-16 23:07:30,287 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1270 transitions. [2021-10-16 23:07:30,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1270 transitions. [2021-10-16 23:07:30,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:30,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1270 transitions. [2021-10-16 23:07:30,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.84210526315789) internal successors, (1270), 19 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:30,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:30,290 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:30,290 INFO L186 Difference]: Start difference. First operand has 346 places, 452 transitions, 4586 flow. Second operand 19 states and 1270 transitions. [2021-10-16 23:07:30,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1179 transitions, 11545 flow [2021-10-16 23:07:30,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 1179 transitions, 11288 flow, removed 106 selfloop flow, removed 3 redundant places. [2021-10-16 23:07:30,789 INFO L242 Difference]: Finished difference. Result has 374 places, 490 transitions, 5472 flow [2021-10-16 23:07:30,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5472, PETRI_PLACES=374, PETRI_TRANSITIONS=490} [2021-10-16 23:07:30,789 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 280 predicate places. [2021-10-16 23:07:30,789 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 490 transitions, 5472 flow [2021-10-16 23:07:30,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:30,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:30,789 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:30,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:31,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-16 23:07:31,002 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:31,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:31,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1786357032, now seen corresponding path program 10 times [2021-10-16 23:07:31,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:31,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780019919] [2021-10-16 23:07:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:31,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:31,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:31,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780019919] [2021-10-16 23:07:31,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780019919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:31,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883503588] [2021-10-16 23:07:31,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 23:07:31,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:31,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:31,141 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:31,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-16 23:07:31,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 23:07:31,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:31,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 23:07:31,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:31,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883503588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:31,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:07:31,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-16 23:07:31,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238803153] [2021-10-16 23:07:31,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-16 23:07:31,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-16 23:07:31,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-16 23:07:31,661 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:07:31,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 490 transitions, 5472 flow. Second operand has 21 states, 21 states have (on average 88.28571428571429) internal successors, (1854), 21 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:31,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:31,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:07:31,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:33,175 INFO L129 PetriNetUnfolder]: 2171/8851 cut-off events. [2021-10-16 23:07:33,175 INFO L130 PetriNetUnfolder]: For 24140/24361 co-relation queries the response was YES. [2021-10-16 23:07:33,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25299 conditions, 8851 events. 2171/8851 cut-off events. For 24140/24361 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 85102 event pairs, 164 based on Foata normal form. 17/8795 useless extension candidates. Maximal degree in co-relation 25166. Up to 1929 conditions per place. [2021-10-16 23:07:33,340 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 26 selfloop transitions, 26 changer transitions 0/512 dead transitions. [2021-10-16 23:07:33,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 512 transitions, 5678 flow [2021-10-16 23:07:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-16 23:07:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-16 23:07:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2375 transitions. [2021-10-16 23:07:33,342 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9068346697212677 [2021-10-16 23:07:33,342 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2375 transitions. [2021-10-16 23:07:33,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2375 transitions. [2021-10-16 23:07:33,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:33,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2375 transitions. [2021-10-16 23:07:33,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 87.96296296296296) internal successors, (2375), 27 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:33,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 97.0) internal successors, (2716), 28 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:33,346 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 97.0) internal successors, (2716), 28 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:33,347 INFO L186 Difference]: Start difference. First operand has 374 places, 490 transitions, 5472 flow. Second operand 27 states and 2375 transitions. [2021-10-16 23:07:33,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 512 transitions, 5678 flow [2021-10-16 23:07:33,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 512 transitions, 5478 flow, removed 100 selfloop flow, removed 0 redundant places. [2021-10-16 23:07:33,505 INFO L242 Difference]: Finished difference. Result has 403 places, 493 transitions, 5388 flow [2021-10-16 23:07:33,505 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5388, PETRI_PLACES=403, PETRI_TRANSITIONS=493} [2021-10-16 23:07:33,505 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 309 predicate places. [2021-10-16 23:07:33,505 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 493 transitions, 5388 flow [2021-10-16 23:07:33,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 88.28571428571429) internal successors, (1854), 21 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:33,506 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:33,506 INFO L254 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:33,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:33,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-16 23:07:33,708 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash 317972912, now seen corresponding path program 11 times [2021-10-16 23:07:33,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:33,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106778133] [2021-10-16 23:07:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:33,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:33,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:33,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106778133] [2021-10-16 23:07:33,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106778133] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:33,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599425034] [2021-10-16 23:07:33,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 23:07:33,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:33,856 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:33,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-16 23:07:34,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-16 23:07:34,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:34,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 23:07:34,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:07:34,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599425034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:34,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:07:34,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-16 23:07:34,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793049518] [2021-10-16 23:07:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-16 23:07:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-16 23:07:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-10-16 23:07:34,373 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 97 [2021-10-16 23:07:34,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 493 transitions, 5388 flow. Second operand has 23 states, 23 states have (on average 88.30434782608695) internal successors, (2031), 23 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:34,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:34,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 97 [2021-10-16 23:07:34,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:36,039 INFO L129 PetriNetUnfolder]: 2171/8853 cut-off events. [2021-10-16 23:07:36,039 INFO L130 PetriNetUnfolder]: For 22491/22710 co-relation queries the response was YES. [2021-10-16 23:07:36,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25062 conditions, 8853 events. 2171/8853 cut-off events. For 22491/22710 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 85116 event pairs, 164 based on Foata normal form. 17/8797 useless extension candidates. Maximal degree in co-relation 24925. Up to 1929 conditions per place. [2021-10-16 23:07:36,128 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 24 selfloop transitions, 30 changer transitions 0/514 dead transitions. [2021-10-16 23:07:36,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 514 transitions, 5570 flow [2021-10-16 23:07:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-16 23:07:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-16 23:07:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2635 transitions. [2021-10-16 23:07:36,130 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9054982817869416 [2021-10-16 23:07:36,130 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2635 transitions. [2021-10-16 23:07:36,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2635 transitions. [2021-10-16 23:07:36,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:36,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2635 transitions. [2021-10-16 23:07:36,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 87.83333333333333) internal successors, (2635), 30 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:36,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 97.0) internal successors, (3007), 31 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:36,135 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 97.0) internal successors, (3007), 31 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:36,135 INFO L186 Difference]: Start difference. First operand has 403 places, 493 transitions, 5388 flow. Second operand 30 states and 2635 transitions. [2021-10-16 23:07:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 514 transitions, 5570 flow [2021-10-16 23:07:36,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 514 transitions, 5480 flow, removed 22 selfloop flow, removed 23 redundant places. [2021-10-16 23:07:36,296 INFO L242 Difference]: Finished difference. Result has 413 places, 496 transitions, 5414 flow [2021-10-16 23:07:36,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=5298, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5414, PETRI_PLACES=413, PETRI_TRANSITIONS=496} [2021-10-16 23:07:36,296 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 319 predicate places. [2021-10-16 23:07:36,297 INFO L470 AbstractCegarLoop]: Abstraction has has 413 places, 496 transitions, 5414 flow [2021-10-16 23:07:36,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 88.30434782608695) internal successors, (2031), 23 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:36,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:36,297 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:36,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:36,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:36,511 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:36,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1876370296, now seen corresponding path program 12 times [2021-10-16 23:07:36,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:36,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935440720] [2021-10-16 23:07:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:36,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:07:36,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:36,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935440720] [2021-10-16 23:07:36,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935440720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:36,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033040962] [2021-10-16 23:07:36,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 23:07:36,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:36,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:36,800 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:36,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 23:07:37,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-16 23:07:37,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:37,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:07:37,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:37,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:07:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:07:37,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033040962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:37,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:37,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-10-16 23:07:37,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759935337] [2021-10-16 23:07:37,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:07:37,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:07:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-16 23:07:37,515 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:37,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 496 transitions, 5414 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:37,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:37,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:37,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:42,400 INFO L129 PetriNetUnfolder]: 7720/20251 cut-off events. [2021-10-16 23:07:42,400 INFO L130 PetriNetUnfolder]: For 83753/83930 co-relation queries the response was YES. [2021-10-16 23:07:42,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73770 conditions, 20251 events. 7720/20251 cut-off events. For 83753/83930 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 184016 event pairs, 1415 based on Foata normal form. 82/20237 useless extension candidates. Maximal degree in co-relation 73630. Up to 3780 conditions per place. [2021-10-16 23:07:42,746 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 898 selfloop transitions, 186 changer transitions 3/1159 dead transitions. [2021-10-16 23:07:42,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1159 transitions, 11850 flow [2021-10-16 23:07:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-16 23:07:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-16 23:07:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1224 transitions. [2021-10-16 23:07:42,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6641345632121541 [2021-10-16 23:07:42,748 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1224 transitions. [2021-10-16 23:07:42,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1224 transitions. [2021-10-16 23:07:42,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:42,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1224 transitions. [2021-10-16 23:07:42,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 64.42105263157895) internal successors, (1224), 19 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:42,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:42,751 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:42,752 INFO L186 Difference]: Start difference. First operand has 413 places, 496 transitions, 5414 flow. Second operand 19 states and 1224 transitions. [2021-10-16 23:07:42,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1159 transitions, 11850 flow [2021-10-16 23:07:43,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1159 transitions, 11750 flow, removed 25 selfloop flow, removed 25 redundant places. [2021-10-16 23:07:43,282 INFO L242 Difference]: Finished difference. Result has 419 places, 518 transitions, 6361 flow [2021-10-16 23:07:43,282 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6361, PETRI_PLACES=419, PETRI_TRANSITIONS=518} [2021-10-16 23:07:43,282 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 325 predicate places. [2021-10-16 23:07:43,283 INFO L470 AbstractCegarLoop]: Abstraction has has 419 places, 518 transitions, 6361 flow [2021-10-16 23:07:43,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:43,283 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:43,283 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:43,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:43,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:43,488 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:43,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1480807976, now seen corresponding path program 3 times [2021-10-16 23:07:43,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:43,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849489404] [2021-10-16 23:07:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:43,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:07:43,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849489404] [2021-10-16 23:07:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849489404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225561810] [2021-10-16 23:07:43,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 23:07:43,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:43,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:43,668 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:43,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 23:07:44,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-16 23:07:44,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:07:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:44,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:07:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:07:44,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225561810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:44,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:44,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-10-16 23:07:44,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442144994] [2021-10-16 23:07:44,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:07:44,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:44,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:07:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-16 23:07:44,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:44,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 518 transitions, 6361 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:44,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:44,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:44,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:49,785 INFO L129 PetriNetUnfolder]: 8104/21593 cut-off events. [2021-10-16 23:07:49,786 INFO L130 PetriNetUnfolder]: For 111923/112145 co-relation queries the response was YES. [2021-10-16 23:07:50,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80866 conditions, 21593 events. 8104/21593 cut-off events. For 111923/112145 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 202488 event pairs, 1520 based on Foata normal form. 127/21622 useless extension candidates. Maximal degree in co-relation 80712. Up to 4165 conditions per place. [2021-10-16 23:07:50,219 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 897 selfloop transitions, 202 changer transitions 8/1179 dead transitions. [2021-10-16 23:07:50,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1179 transitions, 13167 flow [2021-10-16 23:07:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-16 23:07:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-16 23:07:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1539 transitions. [2021-10-16 23:07:50,221 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.634639175257732 [2021-10-16 23:07:50,221 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1539 transitions. [2021-10-16 23:07:50,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1539 transitions. [2021-10-16 23:07:50,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:50,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1539 transitions. [2021-10-16 23:07:50,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 61.56) internal successors, (1539), 25 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:50,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 97.0) internal successors, (2522), 26 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:50,225 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 97.0) internal successors, (2522), 26 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:50,225 INFO L186 Difference]: Start difference. First operand has 419 places, 518 transitions, 6361 flow. Second operand 25 states and 1539 transitions. [2021-10-16 23:07:50,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1179 transitions, 13167 flow [2021-10-16 23:07:50,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1179 transitions, 12846 flow, removed 152 selfloop flow, removed 1 redundant places. [2021-10-16 23:07:50,898 INFO L242 Difference]: Finished difference. Result has 460 places, 572 transitions, 7570 flow [2021-10-16 23:07:50,898 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=6092, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7570, PETRI_PLACES=460, PETRI_TRANSITIONS=572} [2021-10-16 23:07:50,898 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 366 predicate places. [2021-10-16 23:07:50,898 INFO L470 AbstractCegarLoop]: Abstraction has has 460 places, 572 transitions, 7570 flow [2021-10-16 23:07:50,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:50,899 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:50,899 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:50,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-16 23:07:51,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:51,099 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 301246778, now seen corresponding path program 4 times [2021-10-16 23:07:51,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:51,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861936897] [2021-10-16 23:07:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:51,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:07:51,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:51,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861936897] [2021-10-16 23:07:51,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861936897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:51,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505626090] [2021-10-16 23:07:51,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 23:07:51,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:51,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:51,246 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:51,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-16 23:07:51,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 23:07:51,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:07:51,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-16 23:07:51,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:07:51,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 23:07:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:07:51,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505626090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:07:51,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:07:51,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 13 [2021-10-16 23:07:51,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992926971] [2021-10-16 23:07:51,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 23:07:51,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:07:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 23:07:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-16 23:07:51,995 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:07:51,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 572 transitions, 7570 flow. Second operand has 10 states, 10 states have (on average 46.2) internal successors, (462), 10 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:51,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:07:51,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:07:51,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:07:58,222 INFO L129 PetriNetUnfolder]: 8815/23313 cut-off events. [2021-10-16 23:07:58,222 INFO L130 PetriNetUnfolder]: For 135036/135190 co-relation queries the response was YES. [2021-10-16 23:07:58,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89599 conditions, 23313 events. 8815/23313 cut-off events. For 135036/135190 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 221805 event pairs, 3589 based on Foata normal form. 55/23244 useless extension candidates. Maximal degree in co-relation 89426. Up to 6260 conditions per place. [2021-10-16 23:07:58,661 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 1053 selfloop transitions, 108 changer transitions 3/1236 dead transitions. [2021-10-16 23:07:58,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1236 transitions, 14438 flow [2021-10-16 23:07:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 23:07:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-16 23:07:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1124 transitions. [2021-10-16 23:07:58,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6816252274105519 [2021-10-16 23:07:58,663 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1124 transitions. [2021-10-16 23:07:58,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1124 transitions. [2021-10-16 23:07:58,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:07:58,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1124 transitions. [2021-10-16 23:07:58,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 66.11764705882354) internal successors, (1124), 17 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:58,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 97.0) internal successors, (1746), 18 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:58,666 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 97.0) internal successors, (1746), 18 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:58,666 INFO L186 Difference]: Start difference. First operand has 460 places, 572 transitions, 7570 flow. Second operand 17 states and 1124 transitions. [2021-10-16 23:07:58,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1236 transitions, 14438 flow [2021-10-16 23:07:59,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1236 transitions, 14093 flow, removed 134 selfloop flow, removed 2 redundant places. [2021-10-16 23:07:59,549 INFO L242 Difference]: Finished difference. Result has 483 places, 600 transitions, 8107 flow [2021-10-16 23:07:59,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=7291, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8107, PETRI_PLACES=483, PETRI_TRANSITIONS=600} [2021-10-16 23:07:59,550 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 389 predicate places. [2021-10-16 23:07:59,550 INFO L470 AbstractCegarLoop]: Abstraction has has 483 places, 600 transitions, 8107 flow [2021-10-16 23:07:59,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 46.2) internal successors, (462), 10 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:07:59,550 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:07:59,550 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:07:59,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-16 23:07:59,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-16 23:07:59,759 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:07:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:07:59,760 INFO L82 PathProgramCache]: Analyzing trace with hash 169574972, now seen corresponding path program 13 times [2021-10-16 23:07:59,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:07:59,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133868981] [2021-10-16 23:07:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:07:59,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:07:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:07:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:07:59,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:07:59,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133868981] [2021-10-16 23:07:59,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133868981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:07:59,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910712881] [2021-10-16 23:07:59,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 23:07:59,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:07:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:07:59,933 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:07:59,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-16 23:08:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:08:00,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-16 23:08:00,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:08:00,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 23:08:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:08:00,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910712881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:08:00,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:08:00,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2021-10-16 23:08:00,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562311091] [2021-10-16 23:08:00,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 23:08:00,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:08:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 23:08:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-16 23:08:00,633 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:08:00,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 600 transitions, 8107 flow. Second operand has 10 states, 10 states have (on average 46.2) internal successors, (462), 10 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:00,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:08:00,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:08:00,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:08:08,407 INFO L129 PetriNetUnfolder]: 10104/26991 cut-off events. [2021-10-16 23:08:08,408 INFO L130 PetriNetUnfolder]: For 164487/164729 co-relation queries the response was YES. [2021-10-16 23:08:08,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104468 conditions, 26991 events. 10104/26991 cut-off events. For 164487/164729 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 267290 event pairs, 3715 based on Foata normal form. 91/26950 useless extension candidates. Maximal degree in co-relation 104286. Up to 6949 conditions per place. [2021-10-16 23:08:08,889 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 1187 selfloop transitions, 155 changer transitions 13/1427 dead transitions. [2021-10-16 23:08:08,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 1427 transitions, 16965 flow [2021-10-16 23:08:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-16 23:08:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-16 23:08:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1797 transitions. [2021-10-16 23:08:08,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6388197653750445 [2021-10-16 23:08:08,891 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1797 transitions. [2021-10-16 23:08:08,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1797 transitions. [2021-10-16 23:08:08,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:08:08,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1797 transitions. [2021-10-16 23:08:08,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 61.96551724137931) internal successors, (1797), 29 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:08,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 97.0) internal successors, (2910), 30 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:08,895 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 97.0) internal successors, (2910), 30 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:08,895 INFO L186 Difference]: Start difference. First operand has 483 places, 600 transitions, 8107 flow. Second operand 29 states and 1797 transitions. [2021-10-16 23:08:08,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 1427 transitions, 16965 flow [2021-10-16 23:08:10,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1427 transitions, 16716 flow, removed 75 selfloop flow, removed 4 redundant places. [2021-10-16 23:08:10,169 INFO L242 Difference]: Finished difference. Result has 525 places, 670 transitions, 9878 flow [2021-10-16 23:08:10,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=7888, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9878, PETRI_PLACES=525, PETRI_TRANSITIONS=670} [2021-10-16 23:08:10,169 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 431 predicate places. [2021-10-16 23:08:10,169 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 670 transitions, 9878 flow [2021-10-16 23:08:10,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 46.2) internal successors, (462), 10 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:10,169 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:08:10,170 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:08:10,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-16 23:08:10,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-16 23:08:10,375 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:08:10,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:08:10,375 INFO L82 PathProgramCache]: Analyzing trace with hash -202560434, now seen corresponding path program 5 times [2021-10-16 23:08:10,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:08:10,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42757521] [2021-10-16 23:08:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:08:10,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:08:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:08:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:08:10,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:08:10,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42757521] [2021-10-16 23:08:10,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42757521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:08:10,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015592243] [2021-10-16 23:08:10,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 23:08:10,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:08:10,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:08:10,507 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:08:10,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-16 23:08:10,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-16 23:08:10,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:08:10,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:08:10,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:08:11,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:08:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:08:11,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015592243] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:08:11,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:08:11,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-10-16 23:08:11,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099957541] [2021-10-16 23:08:11,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:08:11,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:08:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:08:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-16 23:08:11,233 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:08:11,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 670 transitions, 9878 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:11,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:08:11,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:08:11,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:08:20,111 INFO L129 PetriNetUnfolder]: 10456/28111 cut-off events. [2021-10-16 23:08:20,111 INFO L130 PetriNetUnfolder]: For 193174/193458 co-relation queries the response was YES. [2021-10-16 23:08:20,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111214 conditions, 28111 events. 10456/28111 cut-off events. For 193174/193458 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 281717 event pairs, 2230 based on Foata normal form. 145/28123 useless extension candidates. Maximal degree in co-relation 111014. Up to 4666 conditions per place. [2021-10-16 23:08:20,903 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 1281 selfloop transitions, 279 changer transitions 15/1647 dead transitions. [2021-10-16 23:08:20,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1647 transitions, 19713 flow [2021-10-16 23:08:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-16 23:08:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-16 23:08:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2060 transitions. [2021-10-16 23:08:20,906 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6435488909715714 [2021-10-16 23:08:20,906 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2060 transitions. [2021-10-16 23:08:20,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2060 transitions. [2021-10-16 23:08:20,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:08:20,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2060 transitions. [2021-10-16 23:08:20,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 62.42424242424242) internal successors, (2060), 33 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:20,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 97.0) internal successors, (3298), 34 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:20,910 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 97.0) internal successors, (3298), 34 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:20,910 INFO L186 Difference]: Start difference. First operand has 525 places, 670 transitions, 9878 flow. Second operand 33 states and 2060 transitions. [2021-10-16 23:08:20,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1647 transitions, 19713 flow [2021-10-16 23:08:22,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1647 transitions, 19348 flow, removed 152 selfloop flow, removed 5 redundant places. [2021-10-16 23:08:22,415 INFO L242 Difference]: Finished difference. Result has 566 places, 722 transitions, 11376 flow [2021-10-16 23:08:22,416 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=9523, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=11376, PETRI_PLACES=566, PETRI_TRANSITIONS=722} [2021-10-16 23:08:22,416 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 472 predicate places. [2021-10-16 23:08:22,416 INFO L470 AbstractCegarLoop]: Abstraction has has 566 places, 722 transitions, 11376 flow [2021-10-16 23:08:22,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:22,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:08:22,416 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:08:22,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-16 23:08:22,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:08:22,633 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:08:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:08:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash -199424724, now seen corresponding path program 14 times [2021-10-16 23:08:22,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:08:22,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918455433] [2021-10-16 23:08:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:08:22,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:08:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:08:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:08:22,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:08:22,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918455433] [2021-10-16 23:08:22,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918455433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:08:22,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573218168] [2021-10-16 23:08:22,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:08:22,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:08:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:08:22,784 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:08:22,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-16 23:08:23,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 23:08:23,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:08:23,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:08:23,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:08:23,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:08:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:08:23,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573218168] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:08:23,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:08:23,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-10-16 23:08:23,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83992159] [2021-10-16 23:08:23,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:08:23,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:08:23,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:08:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-16 23:08:23,582 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:08:23,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 722 transitions, 11376 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:23,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:08:23,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:08:23,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:08:32,477 INFO L129 PetriNetUnfolder]: 10492/28240 cut-off events. [2021-10-16 23:08:32,477 INFO L130 PetriNetUnfolder]: For 219153/219462 co-relation queries the response was YES. [2021-10-16 23:08:32,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114202 conditions, 28240 events. 10492/28240 cut-off events. For 219153/219462 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 283396 event pairs, 2150 based on Foata normal form. 139/28242 useless extension candidates. Maximal degree in co-relation 113989. Up to 4689 conditions per place. [2021-10-16 23:08:33,053 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 1433 selfloop transitions, 286 changer transitions 10/1801 dead transitions. [2021-10-16 23:08:33,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 1801 transitions, 21628 flow [2021-10-16 23:08:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-16 23:08:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-16 23:08:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1880 transitions. [2021-10-16 23:08:33,055 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6921944035346097 [2021-10-16 23:08:33,055 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1880 transitions. [2021-10-16 23:08:33,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1880 transitions. [2021-10-16 23:08:33,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:08:33,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1880 transitions. [2021-10-16 23:08:33,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 67.14285714285714) internal successors, (1880), 28 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:33,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 97.0) internal successors, (2813), 29 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:33,059 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 97.0) internal successors, (2813), 29 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:33,059 INFO L186 Difference]: Start difference. First operand has 566 places, 722 transitions, 11376 flow. Second operand 28 states and 1880 transitions. [2021-10-16 23:08:33,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 1801 transitions, 21628 flow [2021-10-16 23:08:34,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 1801 transitions, 20959 flow, removed 236 selfloop flow, removed 9 redundant places. [2021-10-16 23:08:34,878 INFO L242 Difference]: Finished difference. Result has 592 places, 745 transitions, 12005 flow [2021-10-16 23:08:34,878 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=10778, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12005, PETRI_PLACES=592, PETRI_TRANSITIONS=745} [2021-10-16 23:08:34,878 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 498 predicate places. [2021-10-16 23:08:34,879 INFO L470 AbstractCegarLoop]: Abstraction has has 592 places, 745 transitions, 12005 flow [2021-10-16 23:08:34,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:34,879 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:08:34,879 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:08:34,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-16 23:08:35,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:08:35,091 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:08:35,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:08:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1695387952, now seen corresponding path program 15 times [2021-10-16 23:08:35,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:08:35,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087637296] [2021-10-16 23:08:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:08:35,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:08:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:08:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:08:35,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:08:35,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087637296] [2021-10-16 23:08:35,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087637296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:08:35,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721098832] [2021-10-16 23:08:35,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 23:08:35,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:08:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:08:35,246 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:08:35,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-16 23:08:35,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-16 23:08:35,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:08:35,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 23:08:35,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:08:35,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 23:08:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:08:36,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721098832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:08:36,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:08:36,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-10-16 23:08:36,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888806833] [2021-10-16 23:08:36,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:08:36,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:08:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:08:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-16 23:08:36,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:08:36,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 745 transitions, 12005 flow. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:36,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:08:36,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:08:36,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:08:44,755 INFO L129 PetriNetUnfolder]: 10002/26920 cut-off events. [2021-10-16 23:08:44,755 INFO L130 PetriNetUnfolder]: For 217461/217737 co-relation queries the response was YES. [2021-10-16 23:08:45,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109797 conditions, 26920 events. 10002/26920 cut-off events. For 217461/217737 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 267130 event pairs, 2127 based on Foata normal form. 147/26936 useless extension candidates. Maximal degree in co-relation 109579. Up to 4424 conditions per place. [2021-10-16 23:08:45,438 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 1340 selfloop transitions, 290 changer transitions 19/1721 dead transitions. [2021-10-16 23:08:45,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1721 transitions, 21030 flow [2021-10-16 23:08:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-16 23:08:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-16 23:08:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2304 transitions. [2021-10-16 23:08:45,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.641961549178044 [2021-10-16 23:08:45,440 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2304 transitions. [2021-10-16 23:08:45,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2304 transitions. [2021-10-16 23:08:45,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:08:45,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2304 transitions. [2021-10-16 23:08:45,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 62.270270270270274) internal successors, (2304), 37 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:45,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 97.0) internal successors, (3686), 38 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:45,445 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 97.0) internal successors, (3686), 38 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:45,445 INFO L186 Difference]: Start difference. First operand has 592 places, 745 transitions, 12005 flow. Second operand 37 states and 2304 transitions. [2021-10-16 23:08:45,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1721 transitions, 21030 flow [2021-10-16 23:08:47,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 1721 transitions, 20526 flow, removed 99 selfloop flow, removed 10 redundant places. [2021-10-16 23:08:47,028 INFO L242 Difference]: Finished difference. Result has 626 places, 756 transitions, 12353 flow [2021-10-16 23:08:47,028 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=11414, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=12353, PETRI_PLACES=626, PETRI_TRANSITIONS=756} [2021-10-16 23:08:47,028 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 532 predicate places. [2021-10-16 23:08:47,028 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 756 transitions, 12353 flow [2021-10-16 23:08:47,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:47,029 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:08:47,029 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:08:47,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-16 23:08:47,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-16 23:08:47,229 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:08:47,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:08:47,229 INFO L82 PathProgramCache]: Analyzing trace with hash 348466182, now seen corresponding path program 16 times [2021-10-16 23:08:47,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:08:47,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567628160] [2021-10-16 23:08:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:08:47,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:08:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:08:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-10-16 23:08:47,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:08:47,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567628160] [2021-10-16 23:08:47,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567628160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:08:47,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463025794] [2021-10-16 23:08:47,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 23:08:47,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:08:47,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:08:47,376 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:08:47,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 23:08:48,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 23:08:48,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:08:48,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-16 23:08:48,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:08:48,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 23:08:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-16 23:08:48,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463025794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:08:48,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:08:48,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2021-10-16 23:08:48,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182590933] [2021-10-16 23:08:48,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 23:08:48,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:08:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 23:08:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-16 23:08:48,390 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2021-10-16 23:08:48,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 756 transitions, 12353 flow. Second operand has 10 states, 10 states have (on average 46.2) internal successors, (462), 10 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:08:48,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:08:48,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2021-10-16 23:08:48,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand