/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/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:12:55,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:12:55,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:12:55,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:12:55,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:12:55,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:12:55,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:12:55,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:12:55,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:12:55,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:12:55,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:12:55,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:12:55,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:12:55,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:12:55,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:12:55,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:12:55,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:12:55,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:12:55,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:12:55,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:12:55,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:12:55,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:12:55,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:12:55,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:12:55,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:12:55,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:12:55,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:12:55,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:12:55,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:12:55,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:12:55,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:12:55,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:12:55,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:12:55,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:12:55,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:12:55,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:12:55,582 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 05:12:55,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:12:55,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:12:55,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:12:55,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:12:55,631 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:12:55,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:12:55,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:12:55,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:12:55,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:12:55,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:12:55,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:12:55,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:12:55,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:12:55,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:12:55,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:12:55,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:12:55,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:12:55,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:12:55,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:12:55,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:12:55,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:12:55,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:55,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:12:55,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:12:55,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:12:55,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:12:55,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:12:55,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:12:55,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:12:55,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:12:55,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:12:55,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:12:55,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:12:55,954 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:12:55,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-16 05:12:56,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65c968a7a/c221154a663a4926b707b21a15fdb0b7/FLAG2d7a32b98 [2020-10-16 05:12:56,522 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:12:56,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-16 05:12:56,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65c968a7a/c221154a663a4926b707b21a15fdb0b7/FLAG2d7a32b98 [2020-10-16 05:12:56,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65c968a7a/c221154a663a4926b707b21a15fdb0b7 [2020-10-16 05:12:56,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:12:56,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:12:56,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:56,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:12:56,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:12:56,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:56" (1/1) ... [2020-10-16 05:12:56,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4ca9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:56, skipping insertion in model container [2020-10-16 05:12:56,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:56" (1/1) ... [2020-10-16 05:12:56,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:12:56,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:12:57,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:57,372 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:12:57,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:57,518 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:12:57,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57 WrapperNode [2020-10-16 05:12:57,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:57,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:57,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:12:57,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:12:57,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:57,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:12:57,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:12:57,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:12:57,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (1/1) ... [2020-10-16 05:12:57,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:12:57,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:12:57,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:12:57,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:12:57,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (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 05:12:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-16 05:12:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-16 05:12:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:12:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:12:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:12:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:12:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:12:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:12:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:12:57,677 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 05:12:58,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:12:58,090 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-16 05:12:58,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:58 BoogieIcfgContainer [2020-10-16 05:12:58,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:12:58,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:12:58,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:12:58,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:12:58,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:12:56" (1/3) ... [2020-10-16 05:12:58,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd88dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:58, skipping insertion in model container [2020-10-16 05:12:58,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:57" (2/3) ... [2020-10-16 05:12:58,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd88dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:58, skipping insertion in model container [2020-10-16 05:12:58,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:58" (3/3) ... [2020-10-16 05:12:58,101 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-16 05:12:58,111 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:12:58,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:12:58,119 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:12:58,141 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,142 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,142 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,142 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,143 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,144 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,144 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,144 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,144 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,145 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,145 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,145 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,145 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,145 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,146 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,146 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,146 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,147 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,147 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,147 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,148 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,148 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,148 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,148 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,149 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,149 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,149 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,149 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,150 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,150 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,153 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,154 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,154 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,154 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,154 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,155 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,155 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,155 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,155 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,155 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,156 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:58,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 05:12:58,194 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:58,194 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:58,194 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:58,194 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:58,194 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:58,195 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:58,195 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:58,195 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:58,209 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-10-16 05:12:58,256 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-16 05:12:58,256 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:58,263 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. [2020-10-16 05:12:58,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 87 transitions, 179 flow [2020-10-16 05:12:58,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 86 transitions, 175 flow [2020-10-16 05:12:58,273 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:58,275 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 86 transitions, 175 flow [2020-10-16 05:12:58,278 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 86 transitions, 175 flow [2020-10-16 05:12:58,279 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 86 transitions, 175 flow [2020-10-16 05:12:58,303 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-16 05:12:58,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:58,305 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. [2020-10-16 05:12:58,308 INFO L117 LiptonReduction]: Number of co-enabled transitions 2208 [2020-10-16 05:13:00,194 INFO L132 LiptonReduction]: Checked pairs total: 2663 [2020-10-16 05:13:00,194 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-16 05:13:00,197 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1926 [2020-10-16 05:13:00,212 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2020-10-16 05:13:00,212 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:13:00,212 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:00,213 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 05:13:00,214 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash 11055550, now seen corresponding path program 1 times [2020-10-16 05:13:00,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:00,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34942567] [2020-10-16 05:13:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:00,435 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 05:13:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34942567] [2020-10-16 05:13:00,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:00,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:13:00,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124189238] [2020-10-16 05:13:00,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:13:00,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:00,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:13:00,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:13:00,464 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2020-10-16 05:13:00,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 16 transitions, 35 flow. Second operand 3 states. [2020-10-16 05:13:00,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:00,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2020-10-16 05:13:00,468 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:00,497 INFO L129 PetriNetUnfolder]: 5/34 cut-off events. [2020-10-16 05:13:00,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:13:00,498 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 34 events. 5/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 124 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-16 05:13:00,499 INFO L132 encePairwiseOnDemand]: 180/184 looper letters, 2 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2020-10-16 05:13:00,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 47 flow [2020-10-16 05:13:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:13:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:13:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2020-10-16 05:13:00,518 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2020-10-16 05:13:00,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2020-10-16 05:13:00,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2020-10-16 05:13:00,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:00,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2020-10-16 05:13:00,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:13:00,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:13:00,539 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:13:00,541 INFO L185 Difference]: Start difference. First operand has 17 places, 16 transitions, 35 flow. Second operand 3 states and 468 transitions. [2020-10-16 05:13:00,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 47 flow [2020-10-16 05:13:00,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:00,548 INFO L241 Difference]: Finished difference. Result has 20 places, 17 transitions, 52 flow [2020-10-16 05:13:00,551 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2020-10-16 05:13:00,552 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2020-10-16 05:13:00,552 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 52 flow [2020-10-16 05:13:00,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:13:00,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:00,553 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 05:13:00,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:13:00,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:00,554 INFO L82 PathProgramCache]: Analyzing trace with hash 342711158, now seen corresponding path program 1 times [2020-10-16 05:13:00,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:00,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827423788] [2020-10-16 05:13:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:00,602 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 05:13:00,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827423788] [2020-10-16 05:13:00,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:00,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:13:00,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857776822] [2020-10-16 05:13:00,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:13:00,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:13:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:13:00,608 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2020-10-16 05:13:00,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 52 flow. Second operand 3 states. [2020-10-16 05:13:00,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:00,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2020-10-16 05:13:00,609 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:00,665 INFO L129 PetriNetUnfolder]: 13/43 cut-off events. [2020-10-16 05:13:00,666 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:13:00,666 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 43 events. 13/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 138 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 68. Up to 17 conditions per place. [2020-10-16 05:13:00,667 INFO L132 encePairwiseOnDemand]: 180/184 looper letters, 3 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2020-10-16 05:13:00,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 66 flow [2020-10-16 05:13:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:13:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:13:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2020-10-16 05:13:00,674 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8496376811594203 [2020-10-16 05:13:00,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2020-10-16 05:13:00,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2020-10-16 05:13:00,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:00,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2020-10-16 05:13:00,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:13:00,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:13:00,679 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:13:00,679 INFO L185 Difference]: Start difference. First operand has 20 places, 17 transitions, 52 flow. Second operand 3 states and 469 transitions. [2020-10-16 05:13:00,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 66 flow [2020-10-16 05:13:00,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 60 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:13:00,681 INFO L241 Difference]: Finished difference. Result has 21 places, 17 transitions, 57 flow [2020-10-16 05:13:00,682 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2020-10-16 05:13:00,683 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 4 predicate places. [2020-10-16 05:13:00,683 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 57 flow [2020-10-16 05:13:00,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:13:00,683 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:00,684 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:00,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:13:00,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:00,684 INFO L82 PathProgramCache]: Analyzing trace with hash 561694082, now seen corresponding path program 1 times [2020-10-16 05:13:00,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:00,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482788556] [2020-10-16 05:13:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:13:00,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:13:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:13:00,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:13:00,800 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:13:00,800 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:13:00,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:13:00,801 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 05:13:00,805 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [320] [320] L674-->BCSP_PnpStopEXIT: Formula: (and (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1376485696 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1376485696|) (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1376485696| 0) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1376485696 0)) (= ~stopped~0_Out1376485696 1) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out1376485696| 0)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1376485696|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1376485696, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1376485696|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out1376485696|, ~stopped~0=~stopped~0_Out1376485696, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1376485696|} 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 [2020-10-16 05:13:00,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:13:00 BasicIcfg [2020-10-16 05:13:00,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:13:00,830 INFO L168 Benchmark]: Toolchain (without parser) took 3987.42 ms. Allocated memory was 254.3 MB in the beginning and 373.8 MB in the end (delta: 119.5 MB). Free memory was 209.0 MB in the beginning and 252.2 MB in the end (delta: -43.1 MB). Peak memory consumption was 76.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:13:00,831 INFO L168 Benchmark]: CDTParser took 0.47 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 05:13:00,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.05 ms. Allocated memory was 254.3 MB in the beginning and 323.5 MB in the end (delta: 69.2 MB). Free memory was 209.0 MB in the beginning and 276.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:13:00,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.47 ms. Allocated memory is still 323.5 MB. Free memory was 276.8 MB in the beginning and 274.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:13:00,833 INFO L168 Benchmark]: Boogie Preprocessor took 26.39 ms. Allocated memory is still 323.5 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:13:00,834 INFO L168 Benchmark]: RCFGBuilder took 494.58 ms. Allocated memory is still 323.5 MB. Free memory was 274.3 MB in the beginning and 247.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:13:00,835 INFO L168 Benchmark]: TraceAbstraction took 2734.50 ms. Allocated memory was 323.5 MB in the beginning and 373.8 MB in the end (delta: 50.3 MB). Free memory was 247.4 MB in the beginning and 252.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:13:00,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 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 675.05 ms. Allocated memory was 254.3 MB in the beginning and 323.5 MB in the end (delta: 69.2 MB). Free memory was 209.0 MB in the beginning and 276.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.47 ms. Allocated memory is still 323.5 MB. Free memory was 276.8 MB in the beginning and 274.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.39 ms. Allocated memory is still 323.5 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 494.58 ms. Allocated memory is still 323.5 MB. Free memory was 274.3 MB in the beginning and 247.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2734.50 ms. Allocated memory was 323.5 MB in the beginning and 373.8 MB in the end (delta: 50.3 MB). Free memory was 247.4 MB in the beginning and 252.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 45.6 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: 1.9s, 84 PlacesBefore, 17 PlacesAfterwards, 86 TransitionsBefore, 16 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() [L708] COND TRUE 1 pending == 0 [L709] 1 stoppingEvent = 1 [L694] 0 pendingIo = pendingIo + 1 [L696] 0 return 0; [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. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 7 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...