/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 -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 20:19:22,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 20:19:22,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 20:19:22,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 20:19:22,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 20:19:22,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 20:19:22,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 20:19:22,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 20:19:22,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 20:19:22,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 20:19:22,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 20:19:22,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 20:19:22,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 20:19:22,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 20:19:22,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 20:19:22,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 20:19:22,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 20:19:22,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 20:19:22,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 20:19:22,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 20:19:22,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 20:19:22,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 20:19:22,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 20:19:22,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 20:19:22,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 20:19:22,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 20:19:22,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 20:19:22,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 20:19:22,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 20:19:22,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 20:19:22,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 20:19:22,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 20:19:22,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 20:19:22,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 20:19:22,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 20:19:22,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 20:19:22,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 20:19:22,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 20:19:22,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 20:19:22,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 20:19:22,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 20:19:22,909 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 [2021-08-12 20:19:22,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 20:19:22,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 20:19:22,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 20:19:22,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 20:19:22,924 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 20:19:22,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 20:19:22,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 20:19:22,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 20:19:22,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 20:19:22,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 20:19:22,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 20:19:22,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 20:19:22,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 20:19:22,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 20:19:22,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 20:19:22,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 20:19:22,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 20:19:23,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 20:19:23,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 20:19:23,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 20:19:23,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 20:19:23,183 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 20:19:23,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-08-12 20:19:23,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f1a2e79/9a3b55349dd7412c9394727bc4c9feca/FLAGe746aff68 [2021-08-12 20:19:23,668 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 20:19:23,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-08-12 20:19:23,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f1a2e79/9a3b55349dd7412c9394727bc4c9feca/FLAGe746aff68 [2021-08-12 20:19:23,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f1a2e79/9a3b55349dd7412c9394727bc4c9feca [2021-08-12 20:19:23,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 20:19:23,690 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 20:19:23,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 20:19:23,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 20:19:23,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 20:19:23,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 08:19:23" (1/1) ... [2021-08-12 20:19:23,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13aba61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:23, skipping insertion in model container [2021-08-12 20:19:23,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 08:19:23" (1/1) ... [2021-08-12 20:19:23,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 20:19:23,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 20:19:23,981 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2021-08-12 20:19:23,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 20:19:23,998 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 20:19:24,024 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2021-08-12 20:19:24,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 20:19:24,078 INFO L208 MainTranslator]: Completed translation [2021-08-12 20:19:24,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24 WrapperNode [2021-08-12 20:19:24,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 20:19:24,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 20:19:24,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 20:19:24,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 20:19:24,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 20:19:24,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 20:19:24,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 20:19:24,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 20:19:24,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... [2021-08-12 20:19:24,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 20:19:24,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 20:19:24,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 20:19:24,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 20:19:24,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 20:19:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-12 20:19:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 20:19:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 20:19:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 20:19:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 20:19:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-12 20:19:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-12 20:19:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 20:19:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-12 20:19:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 20:19:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 20:19:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-12 20:19:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 20:19:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 20:19:24,188 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 20:19:24,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 20:19:24,470 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-12 20:19:24,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 08:19:24 BoogieIcfgContainer [2021-08-12 20:19:24,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 20:19:24,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 20:19:24,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 20:19:24,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 20:19:24,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 08:19:23" (1/3) ... [2021-08-12 20:19:24,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57907328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 08:19:24, skipping insertion in model container [2021-08-12 20:19:24,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 08:19:24" (2/3) ... [2021-08-12 20:19:24,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57907328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 08:19:24, skipping insertion in model container [2021-08-12 20:19:24,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 08:19:24" (3/3) ... [2021-08-12 20:19:24,476 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-08-12 20:19:24,479 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 20:19:24,480 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 20:19:24,480 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 20:19:24,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,502 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,502 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,507 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,507 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,507 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,507 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,507 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,510 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,511 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,511 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,512 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,512 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,512 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,512 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,513 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 20:19:24,522 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-08-12 20:19:24,537 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-12 20:19:24,550 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 20:19:24,550 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 20:19:24,550 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 20:19:24,550 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 20:19:24,550 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 20:19:24,551 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 20:19:24,551 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 20:19:24,551 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 20:19:24,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 226 flow [2021-08-12 20:19:24,585 INFO L129 PetriNetUnfolder]: 6/100 cut-off events. [2021-08-12 20:19:24,585 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-08-12 20:19:24,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 100 events. 6/100 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2021-08-12 20:19:24,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 92 transitions, 226 flow [2021-08-12 20:19:24,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 169 flow [2021-08-12 20:19:24,607 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-08-12 20:19:24,607 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-12 20:19:24,607 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 20:19:24,608 INFO L266 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] [2021-08-12 20:19:24,608 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 20:19:24,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 20:19:24,613 INFO L82 PathProgramCache]: Analyzing trace with hash 842405542, now seen corresponding path program 1 times [2021-08-12 20:19:24,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 20:19:24,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582311888] [2021-08-12 20:19:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 20:19:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 20:19:24,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:24,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:24,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:24,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 20:19:24,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:24,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 20:19:24,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 20:19:24,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582311888] [2021-08-12 20:19:24,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582311888] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 20:19:24,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 20:19:24,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 20:19:24,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873719966] [2021-08-12 20:19:24,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 20:19:24,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 20:19:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 20:19:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 20:19:24,846 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 92 [2021-08-12 20:19:24,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:24,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 20:19:24,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 92 [2021-08-12 20:19:24,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 20:19:24,908 INFO L129 PetriNetUnfolder]: 15/139 cut-off events. [2021-08-12 20:19:24,908 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-08-12 20:19:24,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 139 events. 15/139 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 415 event pairs, 3 based on Foata normal form. 4/134 useless extension candidates. Maximal degree in co-relation 142. Up to 24 conditions per place. [2021-08-12 20:19:24,913 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 6 selfloop transitions, 3 changer transitions 4/76 dead transitions. [2021-08-12 20:19:24,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 193 flow [2021-08-12 20:19:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 20:19:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 20:19:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-08-12 20:19:24,926 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9565217391304348 [2021-08-12 20:19:24,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-08-12 20:19:24,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-08-12 20:19:24,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 20:19:24,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-08-12 20:19:24,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2021-08-12 20:19:24,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:24,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:24,944 INFO L348 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2021-08-12 20:19:24,944 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 193 flow [2021-08-12 20:19:24,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:24,945 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 20:19:24,945 INFO L266 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, 1, 1] [2021-08-12 20:19:24,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 20:19:24,945 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 20:19:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 20:19:24,946 INFO L82 PathProgramCache]: Analyzing trace with hash 22077796, now seen corresponding path program 1 times [2021-08-12 20:19:24,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 20:19:24,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641352375] [2021-08-12 20:19:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 20:19:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 20:19:25,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:25,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 20:19:25,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 20:19:25,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 20:19:25,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641352375] [2021-08-12 20:19:25,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641352375] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 20:19:25,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 20:19:25,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 20:19:25,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487508828] [2021-08-12 20:19:25,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 20:19:25,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 20:19:25,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 20:19:25,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 20:19:25,016 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2021-08-12 20:19:25,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 20:19:25,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2021-08-12 20:19:25,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 20:19:25,068 INFO L129 PetriNetUnfolder]: 7/144 cut-off events. [2021-08-12 20:19:25,068 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-08-12 20:19:25,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 144 events. 7/144 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 463 event pairs, 0 based on Foata normal form. 10/149 useless extension candidates. Maximal degree in co-relation 161. Up to 20 conditions per place. [2021-08-12 20:19:25,070 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 7 selfloop transitions, 6 changer transitions 3/76 dead transitions. [2021-08-12 20:19:25,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 219 flow [2021-08-12 20:19:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 20:19:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 20:19:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2021-08-12 20:19:25,071 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.894927536231884 [2021-08-12 20:19:25,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2021-08-12 20:19:25,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2021-08-12 20:19:25,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 20:19:25,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2021-08-12 20:19:25,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,073 INFO L348 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2021-08-12 20:19:25,074 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 219 flow [2021-08-12 20:19:25,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,074 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 20:19:25,074 INFO L266 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, 1, 1, 1] [2021-08-12 20:19:25,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 20:19:25,074 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 20:19:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 20:19:25,075 INFO L82 PathProgramCache]: Analyzing trace with hash 680686972, now seen corresponding path program 1 times [2021-08-12 20:19:25,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 20:19:25,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179825323] [2021-08-12 20:19:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 20:19:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 20:19:25,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:25,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 20:19:25,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 20:19:25,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 20:19:25,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 20:19:25,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179825323] [2021-08-12 20:19:25,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179825323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 20:19:25,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 20:19:25,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 20:19:25,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073081773] [2021-08-12 20:19:25,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 20:19:25,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 20:19:25,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 20:19:25,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 20:19:25,128 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 92 [2021-08-12 20:19:25,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 20:19:25,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 92 [2021-08-12 20:19:25,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 20:19:25,195 INFO L129 PetriNetUnfolder]: 6/149 cut-off events. [2021-08-12 20:19:25,195 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-08-12 20:19:25,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 149 events. 6/149 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 499 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 186. Up to 20 conditions per place. [2021-08-12 20:19:25,199 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 4 selfloop transitions, 5 changer transitions 3/78 dead transitions. [2021-08-12 20:19:25,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 78 transitions, 251 flow [2021-08-12 20:19:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 20:19:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-12 20:19:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2021-08-12 20:19:25,205 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9483695652173914 [2021-08-12 20:19:25,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2021-08-12 20:19:25,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2021-08-12 20:19:25,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 20:19:25,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2021-08-12 20:19:25,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,208 INFO L348 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2021-08-12 20:19:25,208 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 251 flow [2021-08-12 20:19:25,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,209 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 20:19:25,209 INFO L266 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, 1, 1, 1, 1, 1] [2021-08-12 20:19:25,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 20:19:25,209 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 20:19:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 20:19:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1167631152, now seen corresponding path program 1 times [2021-08-12 20:19:25,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 20:19:25,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518212856] [2021-08-12 20:19:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 20:19:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 20:19:25,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:25,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 20:19:25,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 20:19:25,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 20:19:25,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 20:19:25,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 20:19:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 20:19:25,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 20:19:25,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518212856] [2021-08-12 20:19:25,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518212856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 20:19:25,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 20:19:25,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 20:19:25,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441355613] [2021-08-12 20:19:25,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 20:19:25,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 20:19:25,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 20:19:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 20:19:25,302 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 92 [2021-08-12 20:19:25,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 20:19:25,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 92 [2021-08-12 20:19:25,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 20:19:25,352 INFO L129 PetriNetUnfolder]: 6/147 cut-off events. [2021-08-12 20:19:25,352 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-08-12 20:19:25,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 147 events. 6/147 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 482 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 204. Up to 20 conditions per place. [2021-08-12 20:19:25,354 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 6 selfloop transitions, 6 changer transitions 4/80 dead transitions. [2021-08-12 20:19:25,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 80 transitions, 291 flow [2021-08-12 20:19:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 20:19:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 20:19:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2021-08-12 20:19:25,356 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9184782608695652 [2021-08-12 20:19:25,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2021-08-12 20:19:25,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2021-08-12 20:19:25,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 20:19:25,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2021-08-12 20:19:25,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,358 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,359 INFO L348 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2021-08-12 20:19:25,359 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 291 flow [2021-08-12 20:19:25,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 20:19:25,359 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 20:19:25,359 INFO L266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 20:19:25,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 20:19:25,360 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 20:19:25,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 20:19:25,360 INFO L82 PathProgramCache]: Analyzing trace with hash 516278532, now seen corresponding path program 1 times [2021-08-12 20:19:25,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 20:19:25,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943558747] [2021-08-12 20:19:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 20:19:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 20:19:25,398 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 20:19:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 20:19:25,430 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 20:19:25,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 20:19:25,461 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 20:19:25,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 20:19:25,463 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 20:19:25,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 08:19:25 BasicIcfg [2021-08-12 20:19:25,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 20:19:25,513 INFO L168 Benchmark]: Toolchain (without parser) took 1823.54 ms. Allocated memory is still 219.2 MB. Free memory was 182.3 MB in the beginning and 147.6 MB in the end (delta: 34.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 8.0 GB. [2021-08-12 20:19:25,514 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 200.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 20:19:25,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.60 ms. Allocated memory is still 219.2 MB. Free memory was 182.1 MB in the beginning and 181.9 MB in the end (delta: 232.1 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-12 20:19:25,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.83 ms. Allocated memory is still 219.2 MB. Free memory was 181.9 MB in the beginning and 179.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-12 20:19:25,514 INFO L168 Benchmark]: Boogie Preprocessor took 15.11 ms. Allocated memory is still 219.2 MB. Free memory was 179.8 MB in the beginning and 178.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 20:19:25,515 INFO L168 Benchmark]: RCFGBuilder took 338.32 ms. Allocated memory is still 219.2 MB. Free memory was 178.2 MB in the beginning and 153.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-08-12 20:19:25,515 INFO L168 Benchmark]: TraceAbstraction took 1040.60 ms. Allocated memory is still 219.2 MB. Free memory was 152.5 MB in the beginning and 147.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2021-08-12 20:19:25,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 200.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.60 ms. Allocated memory is still 219.2 MB. Free memory was 182.1 MB in the beginning and 181.9 MB in the end (delta: 232.1 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.83 ms. Allocated memory is still 219.2 MB. Free memory was 181.9 MB in the beginning and 179.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.11 ms. Allocated memory is still 219.2 MB. Free memory was 179.8 MB in the beginning and 178.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 338.32 ms. Allocated memory is still 219.2 MB. Free memory was 178.2 MB in the beginning and 153.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1040.60 ms. Allocated memory is still 219.2 MB. Free memory was 152.5 MB in the beginning and 147.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; VAL [mutex={7:0}] [L703] 0 int data = 0; VAL [data=0, mutex={7:0}] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={7:0}] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={7:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, mutex={7:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={7:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 118 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 913.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 299.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 43.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 10 SDslu, 4 SDs, 0 SdLazy, 55 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.2ms SsaConstructionTime, 113.6ms SatisfiabilityAnalysisTime, 230.3ms InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...