/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:19:33,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:19:33,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:19:33,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:19:33,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:19:33,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:19:33,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:19:33,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:19:33,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:19:33,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:19:33,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:19:33,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:19:33,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:19:33,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:19:33,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:19:33,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:19:33,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:19:33,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:19:33,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:19:33,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:19:33,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:19:33,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:19:33,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:19:33,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:19:33,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:19:33,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:19:33,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:19:33,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:19:33,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:19:33,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:19:33,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:19:33,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:19:33,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:19:33,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:19:33,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:19:33,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:19:33,837 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-FA-SemanticLbe.epf [2020-10-15 22:19:33,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:19:33,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:19:33,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:19:33,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:19:33,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:19:33,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:19:33,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:19:33,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:19:33,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:19:33,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:19:33,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:19:33,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:19:33,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:19:33,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:19:33,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:19:33,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:19:33,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:19:33,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:19:33,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:19:33,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:19:33,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:19:33,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:19:33,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:19:33,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:19:33,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:19:33,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:19:33,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:19:33,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:19:33,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:19:34,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:19:34,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:19:34,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:19:34,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:19:34,198 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:19:34,199 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-15 22:19:34,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68b90934/987d3f9645044b79bab29eadda00711e/FLAGca4fc5bca [2020-10-15 22:19:34,801 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:19:34,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-15 22:19:34,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68b90934/987d3f9645044b79bab29eadda00711e/FLAGca4fc5bca [2020-10-15 22:19:35,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68b90934/987d3f9645044b79bab29eadda00711e [2020-10-15 22:19:35,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:19:35,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:19:35,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:19:35,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:19:35,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:19:35,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7e1758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35, skipping insertion in model container [2020-10-15 22:19:35,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:19:35,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:19:35,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:19:35,585 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:19:35,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:19:35,739 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:19:35,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35 WrapperNode [2020-10-15 22:19:35,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:19:35,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:19:35,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:19:35,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:19:35,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:19:35,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:19:35,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:19:35,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:19:35,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... [2020-10-15 22:19:35,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:19:35,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:19:35,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:19:35,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:19:35,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:19:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-15 22:19:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-15 22:19:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:19:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:19:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:19:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:19:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:19:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:19:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:19:35,921 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:19:36,332 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:19:36,332 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-15 22:19:36,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:19:36 BoogieIcfgContainer [2020-10-15 22:19:36,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:19:36,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:19:36,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:19:36,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:19:36,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:19:35" (1/3) ... [2020-10-15 22:19:36,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fec0a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:19:36, skipping insertion in model container [2020-10-15 22:19:36,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:19:35" (2/3) ... [2020-10-15 22:19:36,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fec0a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:19:36, skipping insertion in model container [2020-10-15 22:19:36,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:19:36" (3/3) ... [2020-10-15 22:19:36,343 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-15 22:19:36,355 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:19:36,355 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:19:36,363 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:19:36,364 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:19:36,389 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,389 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,390 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,390 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,390 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,391 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,391 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,391 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,391 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,392 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,392 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,392 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,392 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,392 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,393 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,393 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,393 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,393 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,394 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,394 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,394 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,394 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,395 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,395 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,395 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,395 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,396 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,396 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,396 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,396 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,400 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,401 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,401 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,401 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,401 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,401 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,402 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,402 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,402 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,402 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,402 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:19:36,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 22:19:36,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:19:36,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:19:36,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:19:36,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:19:36,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:19:36,434 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:19:36,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:19:36,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:19:36,447 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:19:36,450 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-15 22:19:36,452 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-15 22:19:36,453 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-10-15 22:19:36,500 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-15 22:19:36,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:19:36,507 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-10-15 22:19:36,511 INFO L117 LiptonReduction]: Number of co-enabled transitions 2208 [2020-10-15 22:19:38,342 INFO L132 LiptonReduction]: Checked pairs total: 2663 [2020-10-15 22:19:38,342 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-15 22:19:38,349 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 39 flow [2020-10-15 22:19:38,360 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-15 22:19:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-15 22:19:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 22:19:38,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:38,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 22:19:38,369 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash 11055550, now seen corresponding path program 1 times [2020-10-15 22:19:38,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:38,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895638644] [2020-10-15 22:19:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:38,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895638644] [2020-10-15 22:19:38,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:38,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:19:38,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267668448] [2020-10-15 22:19:38,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:19:38,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:38,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:19:38,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:19:38,581 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-15 22:19:38,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:38,609 INFO L93 Difference]: Finished difference Result 74 states and 151 transitions. [2020-10-15 22:19:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:19:38,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 22:19:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:38,623 INFO L225 Difference]: With dead ends: 74 [2020-10-15 22:19:38,623 INFO L226 Difference]: Without dead ends: 41 [2020-10-15 22:19:38,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:19:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-15 22:19:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-10-15 22:19:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 22:19:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-10-15 22:19:38,661 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-10-15 22:19:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:38,662 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-10-15 22:19:38,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:19:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-10-15 22:19:38,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-15 22:19:38,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:38,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-15 22:19:38,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:19:38,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:38,664 INFO L82 PathProgramCache]: Analyzing trace with hash 342711158, now seen corresponding path program 1 times [2020-10-15 22:19:38,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:38,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241668880] [2020-10-15 22:19:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:38,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241668880] [2020-10-15 22:19:38,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:38,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:19:38,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458708454] [2020-10-15 22:19:38,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:19:38,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:38,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:19:38,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:19:38,739 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-10-15 22:19:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:38,745 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-10-15 22:19:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:19:38,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-15 22:19:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:38,747 INFO L225 Difference]: With dead ends: 21 [2020-10-15 22:19:38,747 INFO L226 Difference]: Without dead ends: 21 [2020-10-15 22:19:38,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:19:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-15 22:19:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-15 22:19:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 22:19:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-10-15 22:19:38,752 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-10-15 22:19:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:38,753 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-10-15 22:19:38,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:19:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-10-15 22:19:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 22:19:38,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:38,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:38,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:19:38,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1391157156, now seen corresponding path program 1 times [2020-10-15 22:19:38,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:38,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915378434] [2020-10-15 22:19:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:38,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915378434] [2020-10-15 22:19:38,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:38,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:19:38,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180521672] [2020-10-15 22:19:38,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:19:38,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:19:38,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:19:38,827 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 3 states. [2020-10-15 22:19:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:38,837 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2020-10-15 22:19:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:19:38,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-15 22:19:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:38,839 INFO L225 Difference]: With dead ends: 26 [2020-10-15 22:19:38,839 INFO L226 Difference]: Without dead ends: 21 [2020-10-15 22:19:38,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:19:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-15 22:19:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-15 22:19:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 22:19:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2020-10-15 22:19:38,844 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 7 [2020-10-15 22:19:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:38,844 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-10-15 22:19:38,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:19:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-10-15 22:19:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:19:38,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:38,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:38,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:19:38,846 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash 570241712, now seen corresponding path program 1 times [2020-10-15 22:19:38,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:38,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17969106] [2020-10-15 22:19:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:19:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:19:38,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17969106] [2020-10-15 22:19:38,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:19:38,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:19:38,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554035484] [2020-10-15 22:19:38,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:19:38,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:19:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:19:38,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:19:38,897 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 5 states. [2020-10-15 22:19:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:19:38,936 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2020-10-15 22:19:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:19:38,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-15 22:19:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:19:38,938 INFO L225 Difference]: With dead ends: 26 [2020-10-15 22:19:38,938 INFO L226 Difference]: Without dead ends: 25 [2020-10-15 22:19:38,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:19:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-15 22:19:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-10-15 22:19:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 22:19:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2020-10-15 22:19:38,942 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 8 [2020-10-15 22:19:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:19:38,943 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2020-10-15 22:19:38,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:19:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2020-10-15 22:19:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:19:38,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:19:38,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:19:38,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:19:38,944 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:19:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:19:38,945 INFO L82 PathProgramCache]: Analyzing trace with hash 561679202, now seen corresponding path program 2 times [2020-10-15 22:19:38,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:19:38,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048057493] [2020-10-15 22:19:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:19:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 22:19:38,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 22:19:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 22:19:39,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 22:19:39,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 22:19:39,047 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 22:19:39,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:19:39,049 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 22:19:39,055 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [320] [320] L674-->BCSP_PnpStopEXIT: Formula: (and (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out945471341| 0) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out945471341 0)) (= ~stopped~0_Out945471341 1) (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out945471341 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In945471341|) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out945471341| 0)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In945471341|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out945471341, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In945471341|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out945471341|, ~stopped~0=~stopped~0_Out945471341, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out945471341|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-10-15 22:19:39,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:19:39 BasicIcfg [2020-10-15 22:19:39,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:19:39,089 INFO L168 Benchmark]: Toolchain (without parser) took 3984.47 ms. Allocated memory was 253.2 MB in the beginning and 372.8 MB in the end (delta: 119.5 MB). Free memory was 206.7 MB in the beginning and 247.1 MB in the end (delta: -40.4 MB). Peak memory consumption was 79.2 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:39,090 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:19:39,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.63 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 206.7 MB in the beginning and 271.2 MB in the end (delta: -64.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:39,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.48 ms. Allocated memory is still 320.3 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:39,104 INFO L168 Benchmark]: Boogie Preprocessor took 29.02 ms. Allocated memory is still 320.3 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:19:39,105 INFO L168 Benchmark]: RCFGBuilder took 484.43 ms. Allocated memory is still 320.3 MB. Free memory was 268.7 MB in the beginning and 241.8 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:39,106 INFO L168 Benchmark]: TraceAbstraction took 2750.93 ms. Allocated memory was 320.3 MB in the beginning and 372.8 MB in the end (delta: 52.4 MB). Free memory was 241.8 MB in the beginning and 247.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 47.2 MB. Max. memory is 14.2 GB. [2020-10-15 22:19:39,112 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 635.63 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 206.7 MB in the beginning and 271.2 MB in the end (delta: -64.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 78.48 ms. Allocated memory is still 320.3 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.02 ms. Allocated memory is still 320.3 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 484.43 ms. Allocated memory is still 320.3 MB. Free memory was 268.7 MB in the beginning and 241.8 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2750.93 ms. Allocated memory was 320.3 MB in the beginning and 372.8 MB in the end (delta: 52.4 MB). Free memory was 241.8 MB in the beginning and 247.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 47.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1732 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 85 PlacesBefore, 18 PlacesAfterwards, 87 TransitionsBefore, 17 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 2663 MoverChecksTotal - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 volatile int stoppingFlag; [L687] 0 volatile int pendingIo; [L688] 0 volatile int stoppingEvent; [L689] 0 volatile int stopped; [L729] 0 pthread_t t; [L730] 0 pendingIo = 1 [L731] 0 stoppingFlag = 0 [L732] 0 stoppingEvent = 0 [L733] 0 stopped = 0 [L734] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L713] 0 int status; [L691] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L722] 1 stoppingFlag = 1 [L706] 1 int pending; [L700] 1 pendingIo-- [L701] 1 int tmp = pendingIo; [L703] 1 return tmp; [L707] 1 pending = dec() [L694] 0 pendingIo = pendingIo + 1 [L696] 0 return 0; [L708] COND TRUE 1 pending == 0 [L709] 1 stoppingEvent = 1 [L714] 0 status = BCSP_IoIncrement() [L715] COND TRUE 0 status == 0 [L678] COND TRUE 0 !(cond) [L679] 0 __VERIFIER_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 61 SDtfs, 24 SDslu, 39 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 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...