/usr/bin/java -Xmx8000000000 -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 0.1.25-60655ea [2020-09-15 00:24:32,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 00:24:32,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 00:24:32,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 00:24:32,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 00:24:32,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 00:24:32,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 00:24:32,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 00:24:32,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 00:24:32,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 00:24:32,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 00:24:32,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 00:24:32,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 00:24:32,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 00:24:32,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 00:24:32,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 00:24:32,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 00:24:32,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 00:24:32,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 00:24:32,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 00:24:32,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 00:24:32,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 00:24:32,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 00:24:32,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 00:24:32,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 00:24:32,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 00:24:32,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 00:24:32,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 00:24:32,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-15 00:24:32,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 00:24:32,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 00:24:32,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 00:24:32,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 00:24:32,825 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 00:24:32,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 00:24:32,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 00:24:32,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 00:24:32,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 00:24:32,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 00:24:32,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 00:24:32,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 00:24:32,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 00:24:32,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 00:24:32,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 00:24:32,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 00:24:32,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 00:24:32,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 00:24:32,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 00:24:32,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 00:24:32,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 00:24:32,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:24:32,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 00:24:32,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-15 00:24:32,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 00:24:32,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 00:24:32,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 00:24:32,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 00:24:32,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-15 00:24:32,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-15 00:24:33,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 00:24:33,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 00:24:33,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 00:24:33,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 00:24:33,307 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 00:24:33,309 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-09-15 00:24:33,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19d98eb4c/08f899b69bbe4df795bf70f1df8f3bb5/FLAG34f301dec [2020-09-15 00:24:34,080 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 00:24:34,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-09-15 00:24:34,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19d98eb4c/08f899b69bbe4df795bf70f1df8f3bb5/FLAG34f301dec [2020-09-15 00:24:34,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19d98eb4c/08f899b69bbe4df795bf70f1df8f3bb5 [2020-09-15 00:24:34,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 00:24:34,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 00:24:34,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 00:24:34,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 00:24:34,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 00:24:34,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:24:34" (1/1) ... [2020-09-15 00:24:34,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a768182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:34, skipping insertion in model container [2020-09-15 00:24:34,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:24:34" (1/1) ... [2020-09-15 00:24:34,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 00:24:34,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 00:24:34,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:24:34,975 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 00:24:35,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:24:35,158 INFO L208 MainTranslator]: Completed translation [2020-09-15 00:24:35,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35 WrapperNode [2020-09-15 00:24:35,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 00:24:35,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 00:24:35,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 00:24:35,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 00:24:35,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 00:24:35,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 00:24:35,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 00:24:35,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 00:24:35,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... [2020-09-15 00:24:35,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 00:24:35,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 00:24:35,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 00:24:35,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 00:24:35,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-15 00:24:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-09-15 00:24:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-09-15 00:24:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 00:24:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 00:24:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 00:24:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 00:24:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 00:24:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 00:24:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 00:24:35,374 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 00:24:35,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 00:24:35,781 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-09-15 00:24:35,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:24:35 BoogieIcfgContainer [2020-09-15 00:24:35,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 00:24:35,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 00:24:35,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 00:24:35,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 00:24:35,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 12:24:34" (1/3) ... [2020-09-15 00:24:35,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c765937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:24:35, skipping insertion in model container [2020-09-15 00:24:35,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:24:35" (2/3) ... [2020-09-15 00:24:35,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c765937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:24:35, skipping insertion in model container [2020-09-15 00:24:35,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:24:35" (3/3) ... [2020-09-15 00:24:35,798 INFO L109 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-09-15 00:24:35,810 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 00:24:35,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-15 00:24:35,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 00:24:35,821 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 00:24:35,852 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,852 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,852 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,853 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,853 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,853 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,854 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,854 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,854 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,855 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,855 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,855 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,855 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,856 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,856 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,856 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,856 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,857 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,857 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,857 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,857 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,858 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,858 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,858 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,859 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,859 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,859 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,859 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,860 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,860 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,865 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,865 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,866 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,866 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,866 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,866 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,867 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,867 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,867 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,867 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,868 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:24:35,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-15 00:24:35,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:24:35,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:24:35,921 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:24:35,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:24:35,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:24:35,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:24:35,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:24:35,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:24:35,941 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 87 transitions, 179 flow [2020-09-15 00:24:35,943 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-09-15 00:24:36,003 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-09-15 00:24:36,004 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:24:36,012 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. [2020-09-15 00:24:36,016 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-09-15 00:24:36,038 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-09-15 00:24:36,039 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:24:36,040 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. [2020-09-15 00:24:36,043 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2208 [2020-09-15 00:24:36,044 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:24:38,094 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2663 [2020-09-15 00:24:38,095 INFO L214 etLargeBlockEncoding]: Total number of compositions: 94 [2020-09-15 00:24:38,101 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 39 flow [2020-09-15 00:24:38,117 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-15 00:24:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-15 00:24:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-15 00:24:38,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:38,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-15 00:24:38,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:38,155 INFO L82 PathProgramCache]: Analyzing trace with hash 11055550, now seen corresponding path program 1 times [2020-09-15 00:24:38,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:38,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812257238] [2020-09-15 00:24:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:24:38,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812257238] [2020-09-15 00:24:38,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:38,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:24:38,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472967216] [2020-09-15 00:24:38,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:24:38,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:38,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:24:38,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:24:38,401 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-15 00:24:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:38,451 INFO L93 Difference]: Finished difference Result 74 states and 151 transitions. [2020-09-15 00:24:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:24:38,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-15 00:24:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:38,468 INFO L225 Difference]: With dead ends: 74 [2020-09-15 00:24:38,468 INFO L226 Difference]: Without dead ends: 41 [2020-09-15 00:24:38,470 INFO L675 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 [2020-09-15 00:24:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-15 00:24:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-09-15 00:24:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-15 00:24:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-09-15 00:24:38,519 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-09-15 00:24:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:38,520 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-09-15 00:24:38,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:24:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-09-15 00:24:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-15 00:24:38,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:38,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-15 00:24:38,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 00:24:38,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash 342711158, now seen corresponding path program 1 times [2020-09-15 00:24:38,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:38,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073860722] [2020-09-15 00:24:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:24:38,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073860722] [2020-09-15 00:24:38,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:38,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:24:38,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973833970] [2020-09-15 00:24:38,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:24:38,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:38,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:24:38,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:24:38,612 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-09-15 00:24:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:38,625 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-09-15 00:24:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:24:38,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-09-15 00:24:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:38,626 INFO L225 Difference]: With dead ends: 21 [2020-09-15 00:24:38,627 INFO L226 Difference]: Without dead ends: 21 [2020-09-15 00:24:38,628 INFO L675 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 [2020-09-15 00:24:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-15 00:24:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-15 00:24:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-15 00:24:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-09-15 00:24:38,637 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-09-15 00:24:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:38,637 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-09-15 00:24:38,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:24:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-09-15 00:24:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-15 00:24:38,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:38,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:38,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 00:24:38,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1391157156, now seen corresponding path program 1 times [2020-09-15 00:24:38,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:38,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663913524] [2020-09-15 00:24:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:24:38,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663913524] [2020-09-15 00:24:38,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:38,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:24:38,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806153695] [2020-09-15 00:24:38,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:24:38,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:38,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:24:38,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:24:38,813 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 3 states. [2020-09-15 00:24:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:38,823 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2020-09-15 00:24:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:24:38,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-15 00:24:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:38,824 INFO L225 Difference]: With dead ends: 26 [2020-09-15 00:24:38,825 INFO L226 Difference]: Without dead ends: 21 [2020-09-15 00:24:38,825 INFO L675 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 [2020-09-15 00:24:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-15 00:24:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-15 00:24:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-15 00:24:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2020-09-15 00:24:38,831 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 7 [2020-09-15 00:24:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:38,832 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-09-15 00:24:38,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:24:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-09-15 00:24:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 00:24:38,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:38,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:38,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 00:24:38,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:38,836 INFO L82 PathProgramCache]: Analyzing trace with hash 570241712, now seen corresponding path program 1 times [2020-09-15 00:24:38,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:38,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457921090] [2020-09-15 00:24:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:24:38,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457921090] [2020-09-15 00:24:38,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:38,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 00:24:38,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696434144] [2020-09-15 00:24:38,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:24:38,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:24:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:24:38,924 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 5 states. [2020-09-15 00:24:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:38,987 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2020-09-15 00:24:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:24:38,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-09-15 00:24:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:38,989 INFO L225 Difference]: With dead ends: 26 [2020-09-15 00:24:38,989 INFO L226 Difference]: Without dead ends: 25 [2020-09-15 00:24:38,989 INFO L675 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 [2020-09-15 00:24:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-15 00:24:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-09-15 00:24:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-15 00:24:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2020-09-15 00:24:38,993 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 8 [2020-09-15 00:24:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:38,994 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2020-09-15 00:24:38,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:24:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2020-09-15 00:24:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 00:24:38,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:38,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:38,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 00:24:38,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:38,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:38,995 INFO L82 PathProgramCache]: Analyzing trace with hash 561679202, now seen corresponding path program 2 times [2020-09-15 00:24:38,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:38,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528953629] [2020-09-15 00:24:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:24:39,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:24:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:24:39,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:24:39,051 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:24:39,051 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:24:39,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 00:24:39,052 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:24:39,059 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [320] [320] L674-->BCSP_PnpStopEXIT: Formula: (and (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out-1751533823| 0) (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-1751533823 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-1751533823|) (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-1751533823| 0) (= ~stopped~0_Out-1751533823 1) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-1751533823 0))) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-1751533823|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-1751533823, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-1751533823|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out-1751533823|, ~stopped~0=~stopped~0_Out-1751533823, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-1751533823|} 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 [2020-09-15 00:24:39,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 12:24:39 BasicIcfg [2020-09-15 00:24:39,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 00:24:39,090 INFO L168 Benchmark]: Toolchain (without parser) took 4791.11 ms. Allocated memory was 139.5 MB in the beginning and 248.5 MB in the end (delta: 109.1 MB). Free memory was 101.3 MB in the beginning and 172.9 MB in the end (delta: -71.6 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2020-09-15 00:24:39,091 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-15 00:24:39,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.31 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: -60.8 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-15 00:24:39,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.96 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 158.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-15 00:24:39,093 INFO L168 Benchmark]: Boogie Preprocessor took 31.16 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 00:24:39,094 INFO L168 Benchmark]: RCFGBuilder took 502.80 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 131.7 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-15 00:24:39,095 INFO L168 Benchmark]: TraceAbstraction took 3297.13 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 131.0 MB in the beginning and 172.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-09-15 00:24:39,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 858.31 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: -60.8 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 91.96 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 158.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.16 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.80 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 131.7 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3297.13 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 131.0 MB in the beginning and 172.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 85 ProgramPointsBefore, 18 ProgramPointsAfterwards, 87 TransitionsBefore, 17 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 3 ChoiceCompositions, 1351 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2663 CheckedPairsTotal, 94 TotalNumberOfCompositions - 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, 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, 0.1s 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...