/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:46:08,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:46:08,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:46:08,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:46:08,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:46:08,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:46:08,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:46:08,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:46:08,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:46:08,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:46:08,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:46:08,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:46:08,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:46:08,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:46:08,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:46:08,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:46:08,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:46:08,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:46:08,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:46:08,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:46:08,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:46:08,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:46:08,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:46:08,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:46:08,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 22:46:08,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 22:46:08,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 22:46:08,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 22:46:08,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 22:46:08,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 22:46:08,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:46:08,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:46:08,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:46:08,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:46:08,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:46:08,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:46:08,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:46:08,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:46:08,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:46:08,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:46:08,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:46:08,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 22:46:08,782 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:46:08,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:46:08,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:46:08,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:46:08,784 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:46:08,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:46:08,784 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:46:08,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:46:08,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:46:08,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:46:08,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:46:08,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:46:08,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:46:08,786 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:46:08,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:46:08,786 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:46:08,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:46:08,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:46:08,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:46:08,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:46:08,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:46:08,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:46:08,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:46:08,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:46:08,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:46:08,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:46:08,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:46:08,788 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:46:08,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:46:08,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:46:09,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:46:09,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:46:09,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:46:09,091 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:46:09,092 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:46:09,093 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2019-12-18 22:46:09,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df5b98635/ece978a739e04fbd97b84540c71b104e/FLAGc8dfe8709 [2019-12-18 22:46:09,703 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:46:09,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2019-12-18 22:46:09,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df5b98635/ece978a739e04fbd97b84540c71b104e/FLAGc8dfe8709 [2019-12-18 22:46:10,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df5b98635/ece978a739e04fbd97b84540c71b104e [2019-12-18 22:46:10,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:46:10,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:46:10,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:46:10,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:46:10,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:46:10,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6ff021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10, skipping insertion in model container [2019-12-18 22:46:10,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:46:10,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:46:10,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:46:10,637 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:46:10,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:46:10,752 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:46:10,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10 WrapperNode [2019-12-18 22:46:10,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:46:10,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:46:10,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:46:10,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:46:10,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:46:10,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:46:10,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:46:10,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:46:10,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (1/1) ... [2019-12-18 22:46:10,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:46:10,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:46:10,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:46:10,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:46:10,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (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 [2019-12-18 22:46:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:46:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:46:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:46:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:46:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:46:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:46:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:46:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:46:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:46:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:46:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:46:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:46:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:46:10,896 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 22:46:11,246 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:46:11,246 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:46:11,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:46:11 BoogieIcfgContainer [2019-12-18 22:46:11,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:46:11,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:46:11,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:46:11,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:46:11,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:46:10" (1/3) ... [2019-12-18 22:46:11,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888b6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:46:11, skipping insertion in model container [2019-12-18 22:46:11,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:46:10" (2/3) ... [2019-12-18 22:46:11,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888b6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:46:11, skipping insertion in model container [2019-12-18 22:46:11,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:46:11" (3/3) ... [2019-12-18 22:46:11,257 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2019-12-18 22:46:11,267 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:46:11,267 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:46:11,275 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:46:11,276 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:46:11,304 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,304 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,305 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,306 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,307 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,307 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,308 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,308 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,308 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,308 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,309 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,309 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,310 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,310 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,310 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,310 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,311 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,311 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,314 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,315 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,315 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,315 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,321 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,322 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,322 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,322 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,325 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,326 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,326 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,327 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:46:11,339 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:46:11,355 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:46:11,355 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:46:11,355 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:46:11,355 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:46:11,355 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:46:11,356 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:46:11,356 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:46:11,356 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:46:11,368 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-18 22:46:11,370 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 22:46:11,410 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 22:46:11,410 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:46:11,418 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:46:11,423 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 22:46:11,441 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 22:46:11,442 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:46:11,443 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:46:11,445 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:46:11,447 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:46:12,797 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-12-18 22:46:12,947 INFO L206 etLargeBlockEncoding]: Checked pairs total: 479 [2019-12-18 22:46:12,949 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-18 22:46:12,955 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 22:46:12,973 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 22:46:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 22:46:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:46:12,997 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:46:12,998 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:46:12,998 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:46:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:46:13,010 INFO L82 PathProgramCache]: Analyzing trace with hash 492740166, now seen corresponding path program 1 times [2019-12-18 22:46:13,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:46:13,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727228586] [2019-12-18 22:46:13,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:46:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:46:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:46:13,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727228586] [2019-12-18 22:46:13,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:46:13,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:46:13,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643818038] [2019-12-18 22:46:13,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:46:13,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:46:13,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:46:13,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:46:13,389 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 22:46:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:46:13,427 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-18 22:46:13,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:46:13,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:46:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:46:13,456 INFO L225 Difference]: With dead ends: 42 [2019-12-18 22:46:13,460 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 22:46:13,462 INFO L631 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 [2019-12-18 22:46:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 22:46:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 22:46:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:46:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 22:46:13,510 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 22:46:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:46:13,511 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 22:46:13,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:46:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 22:46:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:46:13,513 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:46:13,513 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:46:13,513 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:46:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:46:13,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1904869198, now seen corresponding path program 1 times [2019-12-18 22:46:13,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:46:13,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891382277] [2019-12-18 22:46:13,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:46:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:46:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:46:13,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891382277] [2019-12-18 22:46:13,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:46:13,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:46:13,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56153015] [2019-12-18 22:46:13,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:46:13,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:46:13,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:46:13,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:46:13,602 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-18 22:46:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:46:13,627 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-18 22:46:13,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:46:13,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 22:46:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:46:13,629 INFO L225 Difference]: With dead ends: 36 [2019-12-18 22:46:13,629 INFO L226 Difference]: Without dead ends: 28 [2019-12-18 22:46:13,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:46:13,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-18 22:46:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-18 22:46:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-18 22:46:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-18 22:46:13,635 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-18 22:46:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:46:13,636 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-18 22:46:13,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:46:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-18 22:46:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:46:13,637 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:46:13,637 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:46:13,637 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:46:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:46:13,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1444336371, now seen corresponding path program 1 times [2019-12-18 22:46:13,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:46:13,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647675957] [2019-12-18 22:46:13,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:46:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:46:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:46:13,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647675957] [2019-12-18 22:46:13,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:46:13,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:46:13,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383597396] [2019-12-18 22:46:13,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:46:13,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:46:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:46:13,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:46:13,701 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2019-12-18 22:46:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:46:13,710 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2019-12-18 22:46:13,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:46:13,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:46:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:46:13,711 INFO L225 Difference]: With dead ends: 29 [2019-12-18 22:46:13,711 INFO L226 Difference]: Without dead ends: 17 [2019-12-18 22:46:13,712 INFO L631 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 [2019-12-18 22:46:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-18 22:46:13,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-18 22:46:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-18 22:46:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-18 22:46:13,715 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-18 22:46:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:46:13,715 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-18 22:46:13,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:46:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-18 22:46:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:46:13,716 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:46:13,716 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:46:13,717 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:46:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:46:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1824813225, now seen corresponding path program 1 times [2019-12-18 22:46:13,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:46:13,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195797284] [2019-12-18 22:46:13,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:46:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:46:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:46:13,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195797284] [2019-12-18 22:46:13,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:46:13,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:46:13,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937604960] [2019-12-18 22:46:13,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:46:13,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:46:13,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:46:13,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:46:13,800 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-18 22:46:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:46:13,816 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-18 22:46:13,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:46:13,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:46:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:46:13,817 INFO L225 Difference]: With dead ends: 16 [2019-12-18 22:46:13,817 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:46:13,817 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:46:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:46:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:46:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:46:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:46:13,818 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:46:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:46:13,819 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:46:13,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:46:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:46:13,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:46:13,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:46:13 BasicIcfg [2019-12-18 22:46:13,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:46:13,825 INFO L168 Benchmark]: Toolchain (without parser) took 3792.26 ms. Allocated memory was 138.9 MB in the beginning and 247.5 MB in the end (delta: 108.5 MB). Free memory was 101.6 MB in the beginning and 179.5 MB in the end (delta: -77.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2019-12-18 22:46:13,826 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-18 22:46:13,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.33 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 161.0 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2019-12-18 22:46:13,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.50 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 158.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-12-18 22:46:13,829 INFO L168 Benchmark]: Boogie Preprocessor took 25.99 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:46:13,830 INFO L168 Benchmark]: RCFGBuilder took 419.08 ms. Allocated memory is still 203.4 MB. Free memory was 157.0 MB in the beginning and 136.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-12-18 22:46:13,831 INFO L168 Benchmark]: TraceAbstraction took 2573.47 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 136.7 MB in the beginning and 179.5 MB in the end (delta: -42.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-12-18 22:46:13,835 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.33 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 161.0 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.50 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 158.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.99 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.08 ms. Allocated memory is still 203.4 MB. Free memory was 157.0 MB in the beginning and 136.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2573.47 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 136.7 MB in the beginning and 179.5 MB in the end (delta: -42.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 244 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 479 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 17 SDslu, 32 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...