/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:00:48,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:00:48,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:00:48,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:00:48,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:00:48,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:00:48,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:00:48,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:00:48,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:00:48,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:00:48,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:00:48,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:00:48,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:00:48,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:00:48,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:00:48,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:00:48,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:00:48,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:00:48,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:00:48,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:00:48,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:00:48,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:00:48,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:00:48,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:00:48,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 19:00:48,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 19:00:48,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 19:00:48,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 19:00:48,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 19:00:48,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 19:00:48,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:00:48,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:00:48,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:00:48,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:00:48,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:00:48,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:00:48,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:00:48,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:00:48,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:00:48,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:00:48,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:00:48,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 19:00:48,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:00:48,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:00:48,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:00:48,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:00:48,759 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:00:48,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:00:48,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:00:48,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:00:48,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:00:48,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:00:48,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:00:48,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:00:48,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:00:48,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:00:48,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:00:48,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:00:48,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:00:48,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:00:48,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:00:48,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:00:48,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:00:48,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:00:48,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:00:48,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:00:48,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:00:48,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:00:48,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:00:48,765 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:00:48,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:00:48,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:00:49,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:00:49,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:00:49,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:00:49,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:00:49,105 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:00:49,106 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2020-10-11 19:00:49,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbffdc88b/6b85a4a09ee6422993a60ae82def9aff/FLAG9f0a294a8 [2020-10-11 19:00:49,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:00:49,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2020-10-11 19:00:49,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbffdc88b/6b85a4a09ee6422993a60ae82def9aff/FLAG9f0a294a8 [2020-10-11 19:00:50,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbffdc88b/6b85a4a09ee6422993a60ae82def9aff [2020-10-11 19:00:50,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:00:50,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:00:50,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:50,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:00:50,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:00:50,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:50" (1/1) ... [2020-10-11 19:00:50,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505bc484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:50, skipping insertion in model container [2020-10-11 19:00:50,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:50" (1/1) ... [2020-10-11 19:00:50,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:00:50,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:00:50,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:50,803 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:00:50,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:51,410 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:00:51,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51 WrapperNode [2020-10-11 19:00:51,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:51,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:51,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:00:51,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:00:51,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:51,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:00:51,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:00:51,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:00:51,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... [2020-10-11 19:00:51,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:00:51,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:00:51,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:00:51,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:00:51,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:00:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:00:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 19:00:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 19:00:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-11 19:00:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:00:51,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:00:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:00:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-11 19:00:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-11 19:00:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:00:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 19:00:51,686 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 19:00:52,266 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:00:52,266 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-11 19:00:52,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:00:52 BoogieIcfgContainer [2020-10-11 19:00:52,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:00:52,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:00:52,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:00:52,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:00:52,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:00:50" (1/3) ... [2020-10-11 19:00:52,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eb4c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:00:52, skipping insertion in model container [2020-10-11 19:00:52,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:51" (2/3) ... [2020-10-11 19:00:52,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eb4c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:00:52, skipping insertion in model container [2020-10-11 19:00:52,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:00:52" (3/3) ... [2020-10-11 19:00:52,277 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2020-10-11 19:00:52,288 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:00:52,294 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-11 19:00:52,295 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:00:52,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,322 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,322 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,327 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,327 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:52,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 19:00:52,375 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:00:52,375 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:00:52,376 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:00:52,376 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:00:52,376 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:00:52,376 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:00:52,376 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:00:52,376 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:00:52,390 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 178 flow [2020-10-11 19:00:52,435 INFO L129 PetriNetUnfolder]: 6/104 cut-off events. [2020-10-11 19:00:52,435 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:00:52,439 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 6/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2020-10-11 19:00:52,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 85 transitions, 178 flow [2020-10-11 19:00:52,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 75 transitions, 156 flow [2020-10-11 19:00:52,455 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2020-10-11 19:00:52,455 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:00:52,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:52,457 INFO L255 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] [2020-10-11 19:00:52,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2117655968, now seen corresponding path program 1 times [2020-10-11 19:00:52,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:52,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396951827] [2020-10-11 19:00:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:00:52,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396951827] [2020-10-11 19:00:52,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:52,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:52,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029698437] [2020-10-11 19:00:52,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:52,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:52,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:52,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:53,489 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 85 [2020-10-11 19:00:53,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 156 flow. Second operand 5 states. [2020-10-11 19:00:53,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:53,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 85 [2020-10-11 19:00:53,494 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:53,596 INFO L129 PetriNetUnfolder]: 6/98 cut-off events. [2020-10-11 19:00:53,596 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:00:53,597 INFO L80 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 98 events. 6/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 167 event pairs, 0 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 56. Up to 20 conditions per place. [2020-10-11 19:00:53,599 INFO L132 encePairwiseOnDemand]: 69/85 looper letters, 17 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2020-10-11 19:00:53,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 218 flow [2020-10-11 19:00:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 19:00:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 19:00:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2020-10-11 19:00:53,618 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7025210084033613 [2020-10-11 19:00:53,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 418 transitions. [2020-10-11 19:00:53,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 418 transitions. [2020-10-11 19:00:53,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:53,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 418 transitions. [2020-10-11 19:00:53,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 19:00:53,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 19:00:53,639 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 19:00:53,642 INFO L185 Difference]: Start difference. First operand has 75 places, 75 transitions, 156 flow. Second operand 7 states and 418 transitions. [2020-10-11 19:00:53,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 218 flow [2020-10-11 19:00:53,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 19:00:53,653 INFO L241 Difference]: Finished difference. Result has 79 places, 73 transitions, 189 flow [2020-10-11 19:00:53,656 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2020-10-11 19:00:53,657 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2020-10-11 19:00:53,658 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 189 flow [2020-10-11 19:00:53,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:53,658 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:53,658 INFO L255 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] [2020-10-11 19:00:53,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:00:53,659 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash 635554302, now seen corresponding path program 1 times [2020-10-11 19:00:53,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:53,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633531373] [2020-10-11 19:00:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:00:53,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633531373] [2020-10-11 19:00:53,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:53,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:53,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049217456] [2020-10-11 19:00:53,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:53,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:53,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:53,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:54,153 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 85 [2020-10-11 19:00:54,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 189 flow. Second operand 5 states. [2020-10-11 19:00:54,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:54,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 85 [2020-10-11 19:00:54,154 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:54,234 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2020-10-11 19:00:54,235 INFO L130 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2020-10-11 19:00:54,235 INFO L80 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 96 events. 6/96 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 158 event pairs, 0 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 30. Up to 21 conditions per place. [2020-10-11 19:00:54,236 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 18 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2020-10-11 19:00:54,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 249 flow [2020-10-11 19:00:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 19:00:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 19:00:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 412 transitions. [2020-10-11 19:00:54,240 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.692436974789916 [2020-10-11 19:00:54,240 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 412 transitions. [2020-10-11 19:00:54,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 412 transitions. [2020-10-11 19:00:54,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:54,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 412 transitions. [2020-10-11 19:00:54,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 19:00:54,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 19:00:54,246 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 19:00:54,246 INFO L185 Difference]: Start difference. First operand has 79 places, 73 transitions, 189 flow. Second operand 7 states and 412 transitions. [2020-10-11 19:00:54,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 249 flow [2020-10-11 19:00:54,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:00:54,251 INFO L241 Difference]: Finished difference. Result has 80 places, 72 transitions, 198 flow [2020-10-11 19:00:54,251 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2020-10-11 19:00:54,252 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2020-10-11 19:00:54,252 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 198 flow [2020-10-11 19:00:54,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:54,253 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:54,253 INFO L255 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] [2020-10-11 19:00:54,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:00:54,253 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -869917500, now seen corresponding path program 1 times [2020-10-11 19:00:54,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:54,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878692491] [2020-10-11 19:00:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:00:54,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878692491] [2020-10-11 19:00:54,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:54,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:54,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250418316] [2020-10-11 19:00:54,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:54,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:54,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:54,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:54,617 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 85 [2020-10-11 19:00:54,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 198 flow. Second operand 5 states. [2020-10-11 19:00:54,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:54,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 85 [2020-10-11 19:00:54,619 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:54,692 INFO L129 PetriNetUnfolder]: 5/122 cut-off events. [2020-10-11 19:00:54,692 INFO L130 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2020-10-11 19:00:54,693 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 122 events. 5/122 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 269 event pairs, 0 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 141. Up to 14 conditions per place. [2020-10-11 19:00:54,693 INFO L132 encePairwiseOnDemand]: 72/85 looper letters, 16 selfloop transitions, 16 changer transitions 10/84 dead transitions. [2020-10-11 19:00:54,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 314 flow [2020-10-11 19:00:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 19:00:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 19:00:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2020-10-11 19:00:54,696 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7029411764705882 [2020-10-11 19:00:54,697 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2020-10-11 19:00:54,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2020-10-11 19:00:54,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:54,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2020-10-11 19:00:54,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 19:00:54,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 19:00:54,701 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 19:00:54,701 INFO L185 Difference]: Start difference. First operand has 80 places, 72 transitions, 198 flow. Second operand 8 states and 478 transitions. [2020-10-11 19:00:54,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 314 flow [2020-10-11 19:00:54,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 282 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-11 19:00:54,706 INFO L241 Difference]: Finished difference. Result has 86 places, 72 transitions, 230 flow [2020-10-11 19:00:54,707 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=230, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2020-10-11 19:00:54,707 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2020-10-11 19:00:54,707 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 230 flow [2020-10-11 19:00:54,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:54,707 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:54,708 INFO L255 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] [2020-10-11 19:00:54,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:00:54,708 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:54,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1599481632, now seen corresponding path program 1 times [2020-10-11 19:00:54,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:54,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093189482] [2020-10-11 19:00:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:00:54,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:00:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:00:54,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:00:54,798 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 19:00:54,798 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 19:00:54,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 19:00:54,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:00:54 BasicIcfg [2020-10-11 19:00:54,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 19:00:54,848 INFO L168 Benchmark]: Toolchain (without parser) took 4806.48 ms. Allocated memory was 252.7 MB in the beginning and 367.0 MB in the end (delta: 114.3 MB). Free memory was 206.3 MB in the beginning and 175.2 MB in the end (delta: 31.0 MB). Peak memory consumption was 145.3 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:54,849 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. [2020-10-11 19:00:54,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1370.42 ms. Allocated memory was 252.7 MB in the beginning and 358.1 MB in the end (delta: 105.4 MB). Free memory was 205.4 MB in the beginning and 322.5 MB in the end (delta: -117.1 MB). Peak memory consumption was 109.3 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:54,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.80 ms. Allocated memory is still 358.1 MB. Free memory was 322.5 MB in the beginning and 318.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:54,851 INFO L168 Benchmark]: Boogie Preprocessor took 40.54 ms. Allocated memory is still 358.1 MB. Free memory was 318.1 MB in the beginning and 315.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:54,852 INFO L168 Benchmark]: RCFGBuilder took 682.13 ms. Allocated memory is still 358.1 MB. Free memory was 315.9 MB in the beginning and 275.4 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:54,853 INFO L168 Benchmark]: TraceAbstraction took 2575.56 ms. Allocated memory was 358.1 MB in the beginning and 367.0 MB in the end (delta: 8.9 MB). Free memory was 275.4 MB in the beginning and 175.2 MB in the end (delta: 100.2 MB). Peak memory consumption was 109.1 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:54,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1370.42 ms. Allocated memory was 252.7 MB in the beginning and 358.1 MB in the end (delta: 105.4 MB). Free memory was 205.4 MB in the beginning and 322.5 MB in the end (delta: -117.1 MB). Peak memory consumption was 109.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 131.80 ms. Allocated memory is still 358.1 MB. Free memory was 322.5 MB in the beginning and 318.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 40.54 ms. Allocated memory is still 358.1 MB. Free memory was 318.1 MB in the beginning and 315.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.2 GB. * RCFGBuilder took 682.13 ms. Allocated memory is still 358.1 MB. Free memory was 315.9 MB in the beginning and 275.4 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2575.56 ms. Allocated memory was 358.1 MB in the beginning and 367.0 MB in the end (delta: 8.9 MB). Free memory was 275.4 MB in the beginning and 175.2 MB in the end (delta: 100.2 MB). Peak memory consumption was 109.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1682]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1683] 0 pthread_t t1; VAL [t1={3:0}] [L1684] 0 pthread_mutex_t mutex; VAL [mutex={5:0}, t1={3:0}] [L1685] 0 int pdev; VAL [mutex={5:0}, pdev=0, t1={3:0}] [L1694] 0 pdev = 1 VAL [mutex={5:0}, pdev=1, t1={3:0}] [L1682] COND FALSE 0 !(!expression) VAL [mutex={5:0}, pdev=1, t1={3:0}] [L1696] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={5:0}, pdev=1, t1={3:0}] [L1697] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={5:0}, pdev=1, t1={3:0}] [L1698] 0 return 0; VAL [arg={0:0}, arg={0:0}, mutex={5:0}, pdev=1, t1={3:0}] [L1715] COND FALSE 0 !(module_init()!=0) VAL [arg={0:0}, arg={0:0}, mutex={5:0}, pdev=1, t1={3:0}] [L1706] 0 void *status; VAL [arg={0:0}, arg={0:0}, mutex={5:0}, pdev=1, t1={3:0}] [L1707] 0 pdev = 4 VAL [arg={0:0}, arg={0:0}, mutex={5:0}, pdev=4, t1={3:0}] [L1688] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={5:0}, pdev=6, t1={3:0}] [L1682] COND TRUE 0 !expression VAL [arg={0:0}, arg={0:0}, mutex={5:0}, pdev=6, t1={3:0}] [L1682] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, mutex={5:0}, pdev=6, t1={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 141 SDslu, 205 SDs, 0 SdLazy, 294 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3996 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...