/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-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:12:51,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:12:51,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:12:51,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:12:51,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:12:51,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:12:51,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:12:51,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:12:51,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:12:51,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:12:51,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:12:51,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:12:51,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:12:51,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:12:51,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:12:51,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:12:51,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:12:51,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:12:51,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:12:51,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:12:51,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:12:51,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:12:51,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:12:51,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:12:51,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:12:51,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:12:51,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:12:51,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:12:51,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:12:51,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:12:51,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:12:51,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:12:51,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:12:51,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:12:51,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:12:51,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:12:51,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:12:51,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:12:51,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:12:51,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:12:51,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:12:51,420 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:12:51,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:12:51,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:12:51,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:12:51,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:12:51,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:12:51,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:12:51,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:12:51,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:12:51,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:12:51,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:12:51,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:12:51,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:12:51,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:12:51,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:12:51,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:12:51,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:12:51,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:51,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:12:51,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:12:51,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:12:51,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:12:51,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:12:51,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:12:51,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:12:51,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:12:51,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:12:51,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:12:51,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:12:51,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:12:51,755 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-10-16 05:12:51,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c931439d9/9271c9f531b44d1e98b77888956e2e6d/FLAGa6beeef55 [2020-10-16 05:12:52,345 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:12:52,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-10-16 05:12:52,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c931439d9/9271c9f531b44d1e98b77888956e2e6d/FLAGa6beeef55 [2020-10-16 05:12:52,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c931439d9/9271c9f531b44d1e98b77888956e2e6d [2020-10-16 05:12:52,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:12:52,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:12:52,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:52,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:12:52,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:12:52,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:52" (1/1) ... [2020-10-16 05:12:52,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7ee045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:52, skipping insertion in model container [2020-10-16 05:12:52,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:52" (1/1) ... [2020-10-16 05:12:52,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:12:52,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:12:53,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:53,060 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:12:53,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:53,286 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:12:53,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53 WrapperNode [2020-10-16 05:12:53,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:53,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:53,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:12:53,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:12:53,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:53,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:12:53,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:12:53,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:12:53,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (1/1) ... [2020-10-16 05:12:53,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:12:53,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:12:53,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:12:53,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:12:53,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (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 [2020-10-16 05:12:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-16 05:12:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-16 05:12:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:12:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:12:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:12:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:12:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:12:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:12:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:12:53,455 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:12:53,903 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:12:53,903 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-16 05:12:53,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:53 BoogieIcfgContainer [2020-10-16 05:12:53,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:12:53,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:12:53,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:12:53,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:12:53,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:12:52" (1/3) ... [2020-10-16 05:12:53,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33631a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:53, skipping insertion in model container [2020-10-16 05:12:53,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:53" (2/3) ... [2020-10-16 05:12:53,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33631a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:53, skipping insertion in model container [2020-10-16 05:12:53,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:53" (3/3) ... [2020-10-16 05:12:53,916 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-10-16 05:12:53,928 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:12:53,936 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:12:53,937 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:12:53,962 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,963 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,963 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,963 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,964 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,964 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,964 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,964 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,965 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,965 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,965 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,965 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,966 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,966 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,966 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,966 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,966 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,967 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,967 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,967 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,967 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,968 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,968 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,968 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,969 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,969 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,969 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,969 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,970 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,970 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,981 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,981 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,982 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,982 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,982 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,982 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,983 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,983 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,983 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,983 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:53,983 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:54,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 05:12:54,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:54,017 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:54,017 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:54,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:54,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:54,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:54,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:54,018 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:54,031 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 86 transitions, 177 flow [2020-10-16 05:12:54,077 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2020-10-16 05:12:54,078 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:54,084 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 6/85 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. 0/78 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-10-16 05:12:54,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 86 transitions, 177 flow [2020-10-16 05:12:54,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 85 transitions, 173 flow [2020-10-16 05:12:54,094 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:54,097 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 173 flow [2020-10-16 05:12:54,099 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 85 transitions, 173 flow [2020-10-16 05:12:54,100 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 173 flow [2020-10-16 05:12:54,124 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2020-10-16 05:12:54,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:54,126 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 6/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-10-16 05:12:54,130 INFO L117 LiptonReduction]: Number of co-enabled transitions 2160 [2020-10-16 05:12:56,071 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 05:12:56,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 05:12:56,077 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 05:12:56,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 05:12:56,085 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 05:12:56,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 05:12:56,090 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 05:12:56,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 05:12:56,110 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-16 05:12:56,110 INFO L134 LiptonReduction]: Total number of compositions: 101 [2020-10-16 05:12:56,113 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2021 [2020-10-16 05:12:56,118 INFO L129 PetriNetUnfolder]: 1/6 cut-off events. [2020-10-16 05:12:56,119 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:56,119 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:56,120 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 05:12:56,120 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:56,126 INFO L82 PathProgramCache]: Analyzing trace with hash 11174652, now seen corresponding path program 1 times [2020-10-16 05:12:56,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:56,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243201892] [2020-10-16 05:12:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:56,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243201892] [2020-10-16 05:12:56,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:56,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:56,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76695877] [2020-10-16 05:12:56,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:56,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:56,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:56,326 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 187 [2020-10-16 05:12:56,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 27 flow. Second operand 3 states. [2020-10-16 05:12:56,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:56,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 187 [2020-10-16 05:12:56,330 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:56,349 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2020-10-16 05:12:56,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:56,350 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 16 events. 1/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 19. Up to 4 conditions per place. [2020-10-16 05:12:56,351 INFO L132 encePairwiseOnDemand]: 183/187 looper letters, 1 selfloop transitions, 2 changer transitions 5/13 dead transitions. [2020-10-16 05:12:56,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 39 flow [2020-10-16 05:12:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2020-10-16 05:12:56,369 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8342245989304813 [2020-10-16 05:12:56,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2020-10-16 05:12:56,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2020-10-16 05:12:56,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:56,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2020-10-16 05:12:56,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:56,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:56,388 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:56,390 INFO L185 Difference]: Start difference. First operand has 15 places, 12 transitions, 27 flow. Second operand 3 states and 468 transitions. [2020-10-16 05:12:56,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 39 flow [2020-10-16 05:12:56,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 38 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:56,396 INFO L241 Difference]: Finished difference. Result has 17 places, 8 transitions, 26 flow [2020-10-16 05:12:56,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2020-10-16 05:12:56,400 INFO L342 CegarLoopForPetriNet]: 15 programPoint places, 2 predicate places. [2020-10-16 05:12:56,400 INFO L481 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 26 flow [2020-10-16 05:12:56,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:56,401 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:56,401 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:56,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:12:56,402 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:56,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1422714602, now seen corresponding path program 1 times [2020-10-16 05:12:56,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:56,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048769792] [2020-10-16 05:12:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:56,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048769792] [2020-10-16 05:12:56,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:56,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:56,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286873843] [2020-10-16 05:12:56,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:56,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:56,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:56,519 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 187 [2020-10-16 05:12:56,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 26 flow. Second operand 7 states. [2020-10-16 05:12:56,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:56,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 187 [2020-10-16 05:12:56,521 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:56,598 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2020-10-16 05:12:56,598 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:56,599 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 17 events. 2/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 35. Up to 5 conditions per place. [2020-10-16 05:12:56,599 INFO L132 encePairwiseOnDemand]: 182/187 looper letters, 4 selfloop transitions, 3 changer transitions 4/12 dead transitions. [2020-10-16 05:12:56,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 59 flow [2020-10-16 05:12:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:12:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:12:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 747 transitions. [2020-10-16 05:12:56,604 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5706646294881589 [2020-10-16 05:12:56,604 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 747 transitions. [2020-10-16 05:12:56,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 747 transitions. [2020-10-16 05:12:56,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:56,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 747 transitions. [2020-10-16 05:12:56,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:12:56,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:12:56,610 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:12:56,610 INFO L185 Difference]: Start difference. First operand has 17 places, 8 transitions, 26 flow. Second operand 7 states and 747 transitions. [2020-10-16 05:12:56,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 59 flow [2020-10-16 05:12:56,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 53 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:56,611 INFO L241 Difference]: Finished difference. Result has 21 places, 8 transitions, 37 flow [2020-10-16 05:12:56,612 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37, PETRI_PLACES=21, PETRI_TRANSITIONS=8} [2020-10-16 05:12:56,612 INFO L342 CegarLoopForPetriNet]: 15 programPoint places, 6 predicate places. [2020-10-16 05:12:56,613 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 8 transitions, 37 flow [2020-10-16 05:12:56,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:56,613 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:56,613 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:56,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:12:56,613 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash -786886622, now seen corresponding path program 2 times [2020-10-16 05:12:56,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:56,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008786004] [2020-10-16 05:12:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:56,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008786004] [2020-10-16 05:12:56,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:56,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:56,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826952691] [2020-10-16 05:12:56,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:12:56,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:56,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:12:56,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:12:56,705 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 187 [2020-10-16 05:12:56,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 8 transitions, 37 flow. Second operand 6 states. [2020-10-16 05:12:56,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:56,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 187 [2020-10-16 05:12:56,707 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:56,756 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2020-10-16 05:12:56,756 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-16 05:12:56,756 INFO L80 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 10 events. 0/10 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2020-10-16 05:12:56,756 INFO L132 encePairwiseOnDemand]: 181/187 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2020-10-16 05:12:56,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 64 flow [2020-10-16 05:12:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:12:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:12:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 760 transitions. [2020-10-16 05:12:56,760 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5805958747135218 [2020-10-16 05:12:56,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 760 transitions. [2020-10-16 05:12:56,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 760 transitions. [2020-10-16 05:12:56,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:56,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 760 transitions. [2020-10-16 05:12:56,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:12:56,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:12:56,765 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:12:56,765 INFO L185 Difference]: Start difference. First operand has 21 places, 8 transitions, 37 flow. Second operand 7 states and 760 transitions. [2020-10-16 05:12:56,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 64 flow [2020-10-16 05:12:56,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 10 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 05:12:56,766 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2020-10-16 05:12:56,767 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2020-10-16 05:12:56,767 INFO L342 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2020-10-16 05:12:56,767 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2020-10-16 05:12:56,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:12:56,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:12:56,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:12:56 BasicIcfg [2020-10-16 05:12:56,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:12:56,774 INFO L168 Benchmark]: Toolchain (without parser) took 4111.70 ms. Allocated memory was 254.3 MB in the beginning and 373.3 MB in the end (delta: 119.0 MB). Free memory was 209.3 MB in the beginning and 212.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 116.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:56,775 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 254.3 MB. Free memory is still 230.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:56,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.47 ms. Allocated memory was 254.3 MB in the beginning and 321.9 MB in the end (delta: 67.6 MB). Free memory was 209.3 MB in the beginning and 277.0 MB in the end (delta: -67.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:56,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.61 ms. Allocated memory is still 321.9 MB. Free memory was 277.0 MB in the beginning and 274.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:56,777 INFO L168 Benchmark]: Boogie Preprocessor took 28.02 ms. Allocated memory is still 321.9 MB. Free memory is still 274.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:56,778 INFO L168 Benchmark]: RCFGBuilder took 530.56 ms. Allocated memory is still 321.9 MB. Free memory was 274.5 MB in the beginning and 247.6 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:56,779 INFO L168 Benchmark]: TraceAbstraction took 2862.99 ms. Allocated memory was 321.9 MB in the beginning and 373.3 MB in the end (delta: 51.4 MB). Free memory was 247.6 MB in the beginning and 212.2 MB in the end (delta: 35.4 MB). Peak memory consumption was 86.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:56,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 254.3 MB. Free memory is still 230.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 624.47 ms. Allocated memory was 254.3 MB in the beginning and 321.9 MB in the end (delta: 67.6 MB). Free memory was 209.3 MB in the beginning and 277.0 MB in the end (delta: -67.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 60.61 ms. Allocated memory is still 321.9 MB. Free memory was 277.0 MB in the beginning and 274.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.02 ms. Allocated memory is still 321.9 MB. Free memory is still 274.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 530.56 ms. Allocated memory is still 321.9 MB. Free memory was 274.5 MB in the beginning and 247.6 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2862.99 ms. Allocated memory was 321.9 MB in the beginning and 373.3 MB in the end (delta: 51.4 MB). Free memory was 247.6 MB in the beginning and 212.2 MB in the end (delta: 35.4 MB). Peak memory consumption was 86.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1611 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 33 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 83 PlacesBefore, 15 PlacesAfterwards, 85 TransitionsBefore, 12 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 101 TotalNumberOfCompositions, 2372 MoverChecksTotal - PositiveResult [Line: 679]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 81 locations, 1 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: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 15 SDtfs, 11 SDslu, 14 SDs, 0 SdLazy, 52 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 601 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 correct! Received shutdown request...