/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:13:03,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:13:03,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:13:03,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:13:03,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:13:03,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:13:03,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:13:03,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:13:03,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:13:03,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:13:03,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:13:03,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:13:03,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:13:03,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:13:03,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:13:03,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:13:03,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:13:03,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:13:03,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:13:03,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:13:03,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:13:03,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:13:03,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:13:03,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:13:03,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 15:13:03,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:13:03,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:13:03,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:13:03,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:13:03,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:13:03,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:13:03,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:13:03,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:13:03,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:13:03,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:13:03,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:13:03,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:13:03,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:13:03,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:13:03,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:13:03,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:13:03,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:13:03,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:13:03,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:13:03,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:13:03,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:13:03,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:13:03,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:13:03,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:13:03,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:13:03,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:13:03,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:13:03,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:13:03,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:13:03,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:13:03,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:13:03,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:13:03,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:13:03,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:13:03,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:13:03,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:13:03,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:13:03,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:13:03,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:13:03,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:13:03,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:13:03,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:13:04,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:13:04,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:13:04,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:13:04,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:13:04,105 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:13:04,106 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-11 15:13:04,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b870c70/d2016568627e48589881f226e0c47904/FLAG3d14da47b [2020-10-11 15:13:04,713 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:13:04,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-11 15:13:04,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b870c70/d2016568627e48589881f226e0c47904/FLAG3d14da47b [2020-10-11 15:13:05,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b870c70/d2016568627e48589881f226e0c47904 [2020-10-11 15:13:05,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:13:05,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:13:05,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:13:05,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:13:05,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:13:05,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282858c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05, skipping insertion in model container [2020-10-11 15:13:05,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:13:05,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:13:05,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:13:05,436 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:13:05,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:13:05,700 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:13:05,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05 WrapperNode [2020-10-11 15:13:05,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:13:05,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:13:05,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:13:05,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:13:05,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:13:05,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:13:05,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:13:05,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:13:05,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... [2020-10-11 15:13:05,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:13:05,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:13:05,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:13:05,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:13:05,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:13:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-11 15:13:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-11 15:13:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:13:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:13:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:13:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:13:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:13:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:13:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:13:05,861 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:13:06,258 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:13:06,258 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-11 15:13:06,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:13:06 BoogieIcfgContainer [2020-10-11 15:13:06,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:13:06,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:13:06,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:13:06,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:13:06,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:13:05" (1/3) ... [2020-10-11 15:13:06,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a0cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:13:06, skipping insertion in model container [2020-10-11 15:13:06,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:13:05" (2/3) ... [2020-10-11 15:13:06,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a0cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:13:06, skipping insertion in model container [2020-10-11 15:13:06,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:13:06" (3/3) ... [2020-10-11 15:13:06,267 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-11 15:13:06,281 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:13:06,281 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:13:06,291 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:13:06,292 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:13:06,331 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,331 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,331 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,332 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,332 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,332 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,333 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,333 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,333 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,333 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,334 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,334 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,334 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,334 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,334 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,335 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,335 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,335 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,336 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,336 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,336 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,337 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,337 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,338 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,338 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,338 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,338 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,339 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,339 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,339 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,347 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,348 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,348 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,348 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,348 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,349 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,349 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,349 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,349 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,350 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,351 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:13:06,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:13:06,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:13:06,393 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:13:06,393 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:13:06,394 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:13:06,394 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:13:06,394 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:13:06,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:13:06,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:13:06,413 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:13:06,415 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-11 15:13:06,418 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-11 15:13:06,420 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-10-11 15:13:06,465 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-11 15:13:06,465 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:13:06,472 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. [2020-10-11 15:13:06,475 INFO L117 LiptonReduction]: Number of co-enabled transitions 2208 [2020-10-11 15:13:08,398 INFO L132 LiptonReduction]: Checked pairs total: 2663 [2020-10-11 15:13:08,398 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-11 15:13:08,404 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 39 flow [2020-10-11 15:13:08,415 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-11 15:13:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-11 15:13:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 15:13:08,423 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:13:08,424 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 15:13:08,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:13:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:13:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash 11055550, now seen corresponding path program 1 times [2020-10-11 15:13:08,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:13:08,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862860126] [2020-10-11 15:13:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:13:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:13:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:13:08,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862860126] [2020-10-11 15:13:08,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:13:08,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:13:08,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070810891] [2020-10-11 15:13:08,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:13:08,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:13:08,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:13:08,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:13:08,659 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-11 15:13:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:13:08,702 INFO L93 Difference]: Finished difference Result 74 states and 151 transitions. [2020-10-11 15:13:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:13:08,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-11 15:13:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:13:08,716 INFO L225 Difference]: With dead ends: 74 [2020-10-11 15:13:08,716 INFO L226 Difference]: Without dead ends: 41 [2020-10-11 15:13:08,718 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:13:08,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-11 15:13:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-10-11 15:13:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-11 15:13:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-10-11 15:13:08,752 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-10-11 15:13:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:13:08,752 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-10-11 15:13:08,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:13:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-10-11 15:13:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-11 15:13:08,753 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:13:08,753 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-11 15:13:08,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:13:08,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:13:08,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:13:08,754 INFO L82 PathProgramCache]: Analyzing trace with hash 342711158, now seen corresponding path program 1 times [2020-10-11 15:13:08,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:13:08,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850819125] [2020-10-11 15:13:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:13:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:13:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:13:08,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850819125] [2020-10-11 15:13:08,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:13:08,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:13:08,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449604109] [2020-10-11 15:13:08,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:13:08,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:13:08,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:13:08,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:13:08,806 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-10-11 15:13:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:13:08,816 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-10-11 15:13:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:13:08,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-11 15:13:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:13:08,817 INFO L225 Difference]: With dead ends: 21 [2020-10-11 15:13:08,817 INFO L226 Difference]: Without dead ends: 21 [2020-10-11 15:13:08,818 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:13:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-11 15:13:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-11 15:13:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-11 15:13:08,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-10-11 15:13:08,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-10-11 15:13:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:13:08,823 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-10-11 15:13:08,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:13:08,823 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-10-11 15:13:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 15:13:08,824 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:13:08,824 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:13:08,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:13:08,824 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:13:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:13:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1391157156, now seen corresponding path program 1 times [2020-10-11 15:13:08,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:13:08,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804072951] [2020-10-11 15:13:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:13:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:13:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:13:08,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804072951] [2020-10-11 15:13:08,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:13:08,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:13:08,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127471818] [2020-10-11 15:13:08,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:13:08,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:13:08,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:13:08,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:13:08,920 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 3 states. [2020-10-11 15:13:08,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:13:08,927 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2020-10-11 15:13:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:13:08,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-11 15:13:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:13:08,928 INFO L225 Difference]: With dead ends: 26 [2020-10-11 15:13:08,929 INFO L226 Difference]: Without dead ends: 21 [2020-10-11 15:13:08,929 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:13:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-11 15:13:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-11 15:13:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-11 15:13:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2020-10-11 15:13:08,933 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 7 [2020-10-11 15:13:08,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:13:08,933 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-10-11 15:13:08,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:13:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-10-11 15:13:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:13:08,934 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:13:08,935 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:13:08,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:13:08,935 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:13:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:13:08,936 INFO L82 PathProgramCache]: Analyzing trace with hash 570241712, now seen corresponding path program 1 times [2020-10-11 15:13:08,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:13:08,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379286057] [2020-10-11 15:13:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:13:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:13:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:13:08,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379286057] [2020-10-11 15:13:08,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:13:08,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:13:08,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308883500] [2020-10-11 15:13:08,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:13:08,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:13:08,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:13:08,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:13:08,991 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 5 states. [2020-10-11 15:13:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:13:09,035 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2020-10-11 15:13:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:13:09,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-11 15:13:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:13:09,038 INFO L225 Difference]: With dead ends: 26 [2020-10-11 15:13:09,038 INFO L226 Difference]: Without dead ends: 25 [2020-10-11 15:13:09,039 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:13:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-11 15:13:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-10-11 15:13:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-11 15:13:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2020-10-11 15:13:09,043 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 8 [2020-10-11 15:13:09,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:13:09,043 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2020-10-11 15:13:09,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:13:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2020-10-11 15:13:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:13:09,044 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:13:09,044 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:13:09,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:13:09,045 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:13:09,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:13:09,045 INFO L82 PathProgramCache]: Analyzing trace with hash 561679202, now seen corresponding path program 2 times [2020-10-11 15:13:09,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:13:09,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156967757] [2020-10-11 15:13:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:13:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:13:09,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:13:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:13:09,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:13:09,102 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:13:09,102 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:13:09,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:13:09,103 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:13:09,108 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [320] [320] L674-->BCSP_PnpStopEXIT: Formula: (and (not (= 0 BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out2139965614)) (= ~stopped~0_Out2139965614 1) (= |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In2139965614| BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out2139965614) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out2139965614| 0) (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out2139965614| 0)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In2139965614|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out2139965614, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In2139965614|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out2139965614|, ~stopped~0=~stopped~0_Out2139965614, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out2139965614|} 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 [2020-10-11 15:13:09,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:13:09 BasicIcfg [2020-10-11 15:13:09,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:13:09,132 INFO L168 Benchmark]: Toolchain (without parser) took 4110.15 ms. Allocated memory was 249.6 MB in the beginning and 368.1 MB in the end (delta: 118.5 MB). Free memory was 204.6 MB in the beginning and 254.7 MB in the end (delta: -50.2 MB). Peak memory consumption was 68.3 MB. Max. memory is 14.2 GB. [2020-10-11 15:13:09,133 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:13:09,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.25 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 204.6 MB in the beginning and 264.5 MB in the end (delta: -59.9 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. [2020-10-11 15:13:09,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.14 ms. Allocated memory is still 309.3 MB. Free memory was 264.5 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:13:09,135 INFO L168 Benchmark]: Boogie Preprocessor took 27.48 ms. Allocated memory is still 309.3 MB. Free memory is still 261.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:13:09,136 INFO L168 Benchmark]: RCFGBuilder took 474.20 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 235.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-11 15:13:09,137 INFO L168 Benchmark]: TraceAbstraction took 2868.48 ms. Allocated memory was 309.3 MB in the beginning and 368.1 MB in the end (delta: 58.7 MB). Free memory was 235.1 MB in the beginning and 254.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 39.0 MB. Max. memory is 14.2 GB. [2020-10-11 15:13:09,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 680.25 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 204.6 MB in the beginning and 264.5 MB in the end (delta: -59.9 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 55.14 ms. Allocated memory is still 309.3 MB. Free memory was 264.5 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.48 ms. Allocated memory is still 309.3 MB. Free memory is still 261.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 474.20 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 235.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2868.48 ms. Allocated memory was 309.3 MB in the beginning and 368.1 MB in the end (delta: 58.7 MB). Free memory was 235.1 MB in the beginning and 254.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 39.0 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, 85 PlacesBefore, 18 PlacesAfterwards, 87 TransitionsBefore, 17 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 2663 MoverChecksTotal - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 volatile int stoppingFlag; [L687] 0 volatile int pendingIo; [L688] 0 volatile int stoppingEvent; [L689] 0 volatile int stopped; [L729] 0 pthread_t t; [L730] 0 pendingIo = 1 [L731] 0 stoppingFlag = 0 [L732] 0 stoppingEvent = 0 [L733] 0 stopped = 0 [L734] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L713] 0 int status; [L691] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L722] 1 stoppingFlag = 1 [L706] 1 int pending; [L700] 1 pendingIo-- [L701] 1 int tmp = pendingIo; [L703] 1 return tmp; [L707] 1 pending = dec() [L694] 0 pendingIo = pendingIo + 1 [L696] 0 return 0; [L708] COND TRUE 1 pending == 0 [L709] 1 stoppingEvent = 1 [L714] 0 status = BCSP_IoIncrement() [L715] COND TRUE 0 status == 0 [L678] COND TRUE 0 !(cond) [L679] 0 __VERIFIER_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 61 SDtfs, 24 SDslu, 39 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...