/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:27:12,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:27:12,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:27:12,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:27:12,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:27:12,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:27:12,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:27:12,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:27:12,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:27:12,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:27:12,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:27:12,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:27:12,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:27:12,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:27:12,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:27:12,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:27:12,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:27:12,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:27:12,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:27:12,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:27:12,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:27:12,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:27:12,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:27:12,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:27:12,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 22:27:12,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 22:27:12,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 22:27:12,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 22:27:12,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 22:27:12,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 22:27:12,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:27:12,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:27:12,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:27:12,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:27:12,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:27:12,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:27:12,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:27:12,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:27:12,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:27:12,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:27:12,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:27:12,722 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 22:27:12,742 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:27:12,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:27:12,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:27:12,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:27:12,746 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:27:12,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:27:12,746 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:27:12,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:27:12,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:27:12,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:27:12,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:27:12,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:27:12,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:27:12,747 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:27:12,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:27:12,748 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:27:12,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:27:12,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:27:12,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:27:12,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:27:12,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:27:12,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:27:12,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:27:12,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:27:12,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:27:12,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:27:12,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:27:12,750 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:27:12,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:27:12,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:27:13,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:27:13,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:27:13,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:27:13,022 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:27:13,023 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:27:13,023 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2019-12-18 22:27:13,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bdaf285/308714b496bd48fd8e00080e77b6f91a/FLAGc87d2b760 [2019-12-18 22:27:13,691 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:27:13,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2019-12-18 22:27:13,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bdaf285/308714b496bd48fd8e00080e77b6f91a/FLAGc87d2b760 [2019-12-18 22:27:13,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bdaf285/308714b496bd48fd8e00080e77b6f91a [2019-12-18 22:27:13,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:27:13,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:27:13,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:27:13,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:27:13,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:27:13,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:27:13" (1/1) ... [2019-12-18 22:27:13,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7a7166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:13, skipping insertion in model container [2019-12-18 22:27:13,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:27:13" (1/1) ... [2019-12-18 22:27:13,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:27:14,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:27:14,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:27:14,526 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:27:14,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:27:14,680 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:27:14,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14 WrapperNode [2019-12-18 22:27:14,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:27:14,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:27:14,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:27:14,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:27:14,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:27:14,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:27:14,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:27:14,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:27:14,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (1/1) ... [2019-12-18 22:27:14,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:27:14,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:27:14,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:27:14,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:27:14,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (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 22:27:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:27:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:27:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:27:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:27:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:27:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:27:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:27:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:27:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:27:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:27:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:27:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:27:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:27:14,831 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 22:27:15,189 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:27:15,189 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:27:15,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:27:15 BoogieIcfgContainer [2019-12-18 22:27:15,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:27:15,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:27:15,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:27:15,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:27:15,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:27:13" (1/3) ... [2019-12-18 22:27:15,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c7109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:27:15, skipping insertion in model container [2019-12-18 22:27:15,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:14" (2/3) ... [2019-12-18 22:27:15,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c7109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:27:15, skipping insertion in model container [2019-12-18 22:27:15,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:27:15" (3/3) ... [2019-12-18 22:27:15,199 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2019-12-18 22:27:15,209 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:27:15,210 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:27:15,217 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:27:15,218 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:27:15,244 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,244 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,244 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,245 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,245 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,246 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,246 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,246 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,246 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,247 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,247 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,247 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,248 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,248 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,248 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,249 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,249 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,249 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,253 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,253 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,254 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,254 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,260 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,261 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,261 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,261 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,268 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,269 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,269 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,269 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:27:15,288 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:27:15,308 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:27:15,308 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:27:15,309 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:27:15,309 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:27:15,309 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:27:15,309 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:27:15,309 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:27:15,309 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:27:15,323 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 22:27:15,325 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:27:15,366 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:27:15,367 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:27:15,374 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:27:15,377 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:27:15,394 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:27:15,395 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:27:15,396 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:27:15,397 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:27:15,398 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:27:16,621 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-18 22:27:16,783 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-12-18 22:27:16,832 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-18 22:27:16,832 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-18 22:27:16,837 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 22:27:16,847 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 22:27:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 22:27:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:27:16,855 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:27:16,856 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:27:16,856 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:27:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:27:16,861 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-18 22:27:16,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:27:16,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422659580] [2019-12-18 22:27:16,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:27:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:27:17,095 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 22:27:17,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422659580] [2019-12-18 22:27:17,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:27:17,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:27:17,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030237338] [2019-12-18 22:27:17,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:27:17,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:27:17,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:27:17,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:27:17,127 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 22:27:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:27:17,173 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2019-12-18 22:27:17,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:27:17,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:27:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:27:17,199 INFO L225 Difference]: With dead ends: 44 [2019-12-18 22:27:17,199 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 22:27:17,209 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 22:27:17,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 22:27:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 22:27:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 22:27:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-18 22:27:17,258 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-18 22:27:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:27:17,259 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-18 22:27:17,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:27:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-18 22:27:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:27:17,261 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:27:17,261 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:27:17,262 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:27:17,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:27:17,262 INFO L82 PathProgramCache]: Analyzing trace with hash -816919897, now seen corresponding path program 1 times [2019-12-18 22:27:17,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:27:17,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223929714] [2019-12-18 22:27:17,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:27:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:27:17,380 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 22:27:17,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223929714] [2019-12-18 22:27:17,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:27:17,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:27:17,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911204066] [2019-12-18 22:27:17,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:27:17,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:27:17,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:27:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:27:17,384 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-18 22:27:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:27:17,390 INFO L93 Difference]: Finished difference Result 33 states and 61 transitions. [2019-12-18 22:27:17,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:27:17,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:27:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:27:17,391 INFO L225 Difference]: With dead ends: 33 [2019-12-18 22:27:17,392 INFO L226 Difference]: Without dead ends: 33 [2019-12-18 22:27:17,392 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 22:27:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-18 22:27:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-18 22:27:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-18 22:27:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 61 transitions. [2019-12-18 22:27:17,398 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 61 transitions. Word has length 9 [2019-12-18 22:27:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:27:17,399 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 61 transitions. [2019-12-18 22:27:17,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:27:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 61 transitions. [2019-12-18 22:27:17,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:27:17,400 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:27:17,400 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:27:17,400 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:27:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:27:17,401 INFO L82 PathProgramCache]: Analyzing trace with hash 445286946, now seen corresponding path program 1 times [2019-12-18 22:27:17,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:27:17,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704998066] [2019-12-18 22:27:17,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:27:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:27:17,470 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 22:27:17,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704998066] [2019-12-18 22:27:17,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:27:17,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:27:17,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063038817] [2019-12-18 22:27:17,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:27:17,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:27:17,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:27:17,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:27:17,474 INFO L87 Difference]: Start difference. First operand 33 states and 61 transitions. Second operand 4 states. [2019-12-18 22:27:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:27:17,500 INFO L93 Difference]: Finished difference Result 44 states and 72 transitions. [2019-12-18 22:27:17,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:27:17,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 22:27:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:27:17,502 INFO L225 Difference]: With dead ends: 44 [2019-12-18 22:27:17,502 INFO L226 Difference]: Without dead ends: 38 [2019-12-18 22:27:17,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:27:17,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-18 22:27:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-12-18 22:27:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-18 22:27:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 60 transitions. [2019-12-18 22:27:17,509 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 60 transitions. Word has length 10 [2019-12-18 22:27:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:27:17,509 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 60 transitions. [2019-12-18 22:27:17,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:27:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2019-12-18 22:27:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:27:17,510 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:27:17,510 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:27:17,511 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:27:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:27:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-18 22:27:17,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:27:17,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908609393] [2019-12-18 22:27:17,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:27:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:27:17,560 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 22:27:17,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908609393] [2019-12-18 22:27:17,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:27:17,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:27:17,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162575283] [2019-12-18 22:27:17,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:27:17,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:27:17,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:27:17,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:27:17,563 INFO L87 Difference]: Start difference. First operand 35 states and 60 transitions. Second operand 3 states. [2019-12-18 22:27:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:27:17,583 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2019-12-18 22:27:17,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:27:17,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:27:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:27:17,585 INFO L225 Difference]: With dead ends: 37 [2019-12-18 22:27:17,585 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 22:27:17,585 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 22:27:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 22:27:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-12-18 22:27:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-18 22:27:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2019-12-18 22:27:17,591 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 10 [2019-12-18 22:27:17,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:27:17,591 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2019-12-18 22:27:17,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:27:17,591 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2019-12-18 22:27:17,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:27:17,593 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:27:17,593 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:27:17,593 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:27:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:27:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash 471200862, now seen corresponding path program 2 times [2019-12-18 22:27:17,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:27:17,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693905901] [2019-12-18 22:27:17,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:27:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:27:17,662 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 22:27:17,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693905901] [2019-12-18 22:27:17,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:27:17,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:27:17,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289587719] [2019-12-18 22:27:17,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:27:17,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:27:17,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:27:17,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:27:17,664 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2019-12-18 22:27:17,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:27:17,685 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2019-12-18 22:27:17,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:27:17,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 22:27:17,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:27:17,686 INFO L225 Difference]: With dead ends: 25 [2019-12-18 22:27:17,686 INFO L226 Difference]: Without dead ends: 17 [2019-12-18 22:27:17,686 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 22:27:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-18 22:27:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-18 22:27:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-18 22:27:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-18 22:27:17,689 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-18 22:27:17,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:27:17,690 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-18 22:27:17,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:27:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-18 22:27:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:27:17,691 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:27:17,691 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:27:17,691 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:27:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:27:17,691 INFO L82 PathProgramCache]: Analyzing trace with hash 142093797, now seen corresponding path program 1 times [2019-12-18 22:27:17,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:27:17,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456572448] [2019-12-18 22:27:17,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:27:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:27:17,761 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 22:27:17,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456572448] [2019-12-18 22:27:17,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:27:17,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:27:17,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328516469] [2019-12-18 22:27:17,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:27:17,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:27:17,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:27:17,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:27:17,763 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-18 22:27:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:27:17,786 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-18 22:27:17,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:27:17,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:27:17,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:27:17,787 INFO L225 Difference]: With dead ends: 16 [2019-12-18 22:27:17,787 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:27:17,787 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 22:27:17,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:27:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:27:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:27:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:27:17,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:27:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:27:17,788 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:27:17,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:27:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:27:17,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:27:17,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:27:17 BasicIcfg [2019-12-18 22:27:17,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:27:17,801 INFO L168 Benchmark]: Toolchain (without parser) took 3818.16 ms. Allocated memory was 137.4 MB in the beginning and 250.1 MB in the end (delta: 112.7 MB). Free memory was 99.3 MB in the beginning and 155.9 MB in the end (delta: -56.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2019-12-18 22:27:17,802 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 137.4 MB. Free memory is still 118.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 22:27:17,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.76 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.9 MB in the beginning and 158.4 MB in the end (delta: -59.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:27:17,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.39 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:27:17,809 INFO L168 Benchmark]: Boogie Preprocessor took 24.24 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.4 MB in the end (delta: 979.0 kB). Peak memory consumption was 979.0 kB. Max. memory is 7.1 GB. [2019-12-18 22:27:17,811 INFO L168 Benchmark]: RCFGBuilder took 426.09 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 134.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:27:17,812 INFO L168 Benchmark]: TraceAbstraction took 2604.75 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 134.4 MB in the beginning and 155.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:27:17,825 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 137.4 MB. Free memory is still 118.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.76 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.9 MB in the beginning and 158.4 MB in the end (delta: -59.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.39 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.24 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.4 MB in the end (delta: 979.0 kB). Peak memory consumption was 979.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 426.09 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 134.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2604.75 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 134.4 MB in the beginning and 155.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 18 SDslu, 47 SDs, 0 SdLazy, 36 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...