/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/AutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=31.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 10:40:00,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 10:40:00,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 10:40:00,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 10:40:00,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 10:40:00,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 10:40:00,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 10:40:00,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 10:40:00,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 10:40:00,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 10:40:00,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 10:40:00,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 10:40:00,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 10:40:00,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 10:40:00,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 10:40:00,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 10:40:00,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 10:40:00,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 10:40:00,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 10:40:00,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 10:40:00,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 10:40:00,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 10:40:00,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 10:40:00,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 10:40:00,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-29 10:40:00,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-29 10:40:00,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-29 10:40:00,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-29 10:40:00,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-29 10:40:00,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-29 10:40:00,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-29 10:40:00,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-29 10:40:00,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-29 10:40:00,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-29 10:40:00,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-29 10:40:00,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-29 10:40:00,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-29 10:40:00,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-29 10:40:00,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-29 10:40:00,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-29 10:40:00,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-29 10:40:00,891 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 [2020-09-29 10:40:00,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 10:40:00,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 10:40:00,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 10:40:00,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 10:40:00,919 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 10:40:00,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 10:40:00,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 10:40:00,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 10:40:00,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 10:40:00,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 10:40:00,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 10:40:00,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 10:40:00,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 10:40:00,921 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 10:40:00,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 10:40:00,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 10:40:00,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 10:40:00,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 10:40:00,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 10:40:00,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 10:40:00,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 10:40:00,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 10:40:00,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 10:40:00,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 10:40:00,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 10:40:00,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-29 10:40:00,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 10:40:00,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-29 10:40:00,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-29 10:40:00,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 10:40:01,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 10:40:01,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 10:40:01,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 10:40:01,398 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 10:40:01,398 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 10:40:01,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=31.bpl [2020-09-29 10:40:01,400 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=31.bpl' [2020-09-29 10:40:01,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 10:40:01,478 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 10:40:01,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 10:40:01,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 10:40:01,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 10:40:01,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 10:40:01,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 10:40:01,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 10:40:01,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 10:40:01,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/1) ... [2020-09-29 10:40:01,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 10:40:01,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 10:40:01,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 10:40:01,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 10:40:01,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (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 [2020-09-29 10:40:01,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread29 given in one single declaration [2020-09-29 10:40:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread29 [2020-09-29 10:40:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread29 [2020-09-29 10:40:01,672 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread28 given in one single declaration [2020-09-29 10:40:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread28 [2020-09-29 10:40:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread28 [2020-09-29 10:40:01,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread25 given in one single declaration [2020-09-29 10:40:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread25 [2020-09-29 10:40:01,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread25 [2020-09-29 10:40:01,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread24 given in one single declaration [2020-09-29 10:40:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread24 [2020-09-29 10:40:01,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread24 [2020-09-29 10:40:01,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread27 given in one single declaration [2020-09-29 10:40:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread27 [2020-09-29 10:40:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread27 [2020-09-29 10:40:01,679 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread26 given in one single declaration [2020-09-29 10:40:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread26 [2020-09-29 10:40:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread26 [2020-09-29 10:40:01,680 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread21 given in one single declaration [2020-09-29 10:40:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread21 [2020-09-29 10:40:01,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread21 [2020-09-29 10:40:01,682 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread20 given in one single declaration [2020-09-29 10:40:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread20 [2020-09-29 10:40:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread20 [2020-09-29 10:40:01,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread23 given in one single declaration [2020-09-29 10:40:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread23 [2020-09-29 10:40:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread23 [2020-09-29 10:40:01,690 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread22 given in one single declaration [2020-09-29 10:40:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread22 [2020-09-29 10:40:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread22 [2020-09-29 10:40:01,690 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread18 given in one single declaration [2020-09-29 10:40:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread18 [2020-09-29 10:40:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread18 [2020-09-29 10:40:01,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread17 given in one single declaration [2020-09-29 10:40:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread17 [2020-09-29 10:40:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread17 [2020-09-29 10:40:01,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread19 given in one single declaration [2020-09-29 10:40:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread19 [2020-09-29 10:40:01,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread19 [2020-09-29 10:40:01,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 10:40:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 10:40:01,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 10:40:01,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 10:40:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 10:40:01,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 10:40:01,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-09-29 10:40:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-29 10:40:01,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-29 10:40:01,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-09-29 10:40:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-09-29 10:40:01,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-09-29 10:40:01,696 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-09-29 10:40:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-09-29 10:40:01,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-09-29 10:40:01,697 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-09-29 10:40:01,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-09-29 10:40:01,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-09-29 10:40:01,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-09-29 10:40:01,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-09-29 10:40:01,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-09-29 10:40:01,699 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-09-29 10:40:01,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-09-29 10:40:01,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-09-29 10:40:01,699 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-09-29 10:40:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-09-29 10:40:01,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-09-29 10:40:01,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread30 given in one single declaration [2020-09-29 10:40:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread30 [2020-09-29 10:40:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread30 [2020-09-29 10:40:01,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread14 given in one single declaration [2020-09-29 10:40:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread14 [2020-09-29 10:40:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread14 [2020-09-29 10:40:01,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread13 given in one single declaration [2020-09-29 10:40:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread13 [2020-09-29 10:40:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread13 [2020-09-29 10:40:01,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 10:40:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 10:40:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 10:40:01,704 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread16 given in one single declaration [2020-09-29 10:40:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread16 [2020-09-29 10:40:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thread16 [2020-09-29 10:40:01,704 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread15 given in one single declaration [2020-09-29 10:40:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread15 [2020-09-29 10:40:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread15 [2020-09-29 10:40:01,705 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread10 given in one single declaration [2020-09-29 10:40:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread10 [2020-09-29 10:40:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread10 [2020-09-29 10:40:01,707 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread31 given in one single declaration [2020-09-29 10:40:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread31 [2020-09-29 10:40:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread31 [2020-09-29 10:40:01,708 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread12 given in one single declaration [2020-09-29 10:40:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread12 [2020-09-29 10:40:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread12 [2020-09-29 10:40:01,709 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread11 given in one single declaration [2020-09-29 10:40:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread11 [2020-09-29 10:40:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread11 [2020-09-29 10:40:01,711 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-29 10:40:02,152 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 10:40:02,152 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-09-29 10:40:02,158 INFO L202 PluginConnector]: Adding new model example2_N=31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:40:02 BoogieIcfgContainer [2020-09-29 10:40:02,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 10:40:02,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 10:40:02,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 10:40:02,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 10:40:02,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:40:01" (1/2) ... [2020-09-29 10:40:02,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d4fdc8 and model type example2_N=31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 10:40:02, skipping insertion in model container [2020-09-29 10:40:02,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:40:02" (2/2) ... [2020-09-29 10:40:02,168 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=31.bpl [2020-09-29 10:40:02,180 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-29 10:40:02,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 10:40:02,190 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 10:40:02,192 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 10:40:02,927 INFO L251 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2020-09-29 10:40:02,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 10:40:02,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-29 10:40:02,952 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 10:40:02,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 10:40:02,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 10:40:02,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 10:40:02,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 10:40:02,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 10:40:02,982 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 159 transitions, 566 flow [2020-09-29 10:40:02,984 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 222 places, 159 transitions, 566 flow [2020-09-29 10:40:03,104 INFO L129 PetriNetUnfolder]: 31/128 cut-off events. [2020-09-29 10:40:03,105 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2020-09-29 10:40:03,119 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 128 events. 31/128 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2020-09-29 10:40:03,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 222 places, 159 transitions, 566 flow [2020-09-29 10:40:03,209 INFO L129 PetriNetUnfolder]: 31/128 cut-off events. [2020-09-29 10:40:03,209 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2020-09-29 10:40:03,212 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 128 events. 31/128 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2020-09-29 10:40:03,220 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 7440 [2020-09-29 10:40:03,221 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-29 10:40:03,406 INFO L206 etLargeBlockEncoding]: Checked pairs total: 0 [2020-09-29 10:40:03,406 INFO L214 etLargeBlockEncoding]: Total number of compositions: 1 [2020-09-29 10:40:03,410 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 221 places, 158 transitions, 564 flow