/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/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:28:27,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:28:27,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:28:27,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:28:27,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:28:27,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:28:27,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:28:27,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:28:27,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:28:27,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:28:27,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:28:27,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:28:27,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:28:27,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:28:27,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:28:27,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:28:27,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:28:27,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:28:27,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:28:27,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:28:27,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:28:27,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:28:27,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:28:27,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:28:27,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 22:28:27,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:28:27,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:28:27,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:28:27,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:28:27,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:28:27,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:28:27,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:28:27,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:28:27,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:28:27,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:28:27,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:28:27,680 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 22:28:27,694 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:28:27,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:28:27,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:28:27,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:28:27,696 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:28:27,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:28:27,697 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:28:27,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:28:27,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:28:27,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:28:27,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:28:27,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:28:27,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:28:27,698 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:28:27,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:28:27,698 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:28:27,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:28:27,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:28:27,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:28:27,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:28:27,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:28:27,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:28:27,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:28:27,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:28:27,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:28:27,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:28:27,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:28:27,701 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:28:27,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:28:27,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:28:27,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:28:27,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:28:27,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:28:27,983 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:28:27,983 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:28:27,985 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2019-12-18 22:28:28,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c092ba3/4e2563bd1e8a4ba29c395302bfa6f58c/FLAG0f0b9cb57 [2019-12-18 22:28:28,592 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:28:28,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2019-12-18 22:28:28,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c092ba3/4e2563bd1e8a4ba29c395302bfa6f58c/FLAG0f0b9cb57 [2019-12-18 22:28:28,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c092ba3/4e2563bd1e8a4ba29c395302bfa6f58c [2019-12-18 22:28:28,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:28:28,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:28:28,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:28:28,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:28:28,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:28:28,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:28:28" (1/1) ... [2019-12-18 22:28:28,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cd7482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:28, skipping insertion in model container [2019-12-18 22:28:28,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:28:28" (1/1) ... [2019-12-18 22:28:28,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:28:28,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:28:29,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:28:29,515 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:28:29,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:28:29,671 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:28:29,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29 WrapperNode [2019-12-18 22:28:29,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:28:29,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:28:29,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:28:29,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:28:29,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:28:29,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:28:29,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:28:29,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:28:29,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (1/1) ... [2019-12-18 22:28:29,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:28:29,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:28:29,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:28:29,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:28:29,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (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 22:28:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:28:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:28:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:28:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:28:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:28:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:28:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:28:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:28:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:28:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:28:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:28:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:28:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:28:29,824 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 22:28:30,226 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:28:30,227 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:28:30,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:28:30 BoogieIcfgContainer [2019-12-18 22:28:30,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:28:30,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:28:30,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:28:30,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:28:30,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:28:28" (1/3) ... [2019-12-18 22:28:30,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284b3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:28:30, skipping insertion in model container [2019-12-18 22:28:30,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:28:29" (2/3) ... [2019-12-18 22:28:30,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284b3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:28:30, skipping insertion in model container [2019-12-18 22:28:30,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:28:30" (3/3) ... [2019-12-18 22:28:30,237 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2019-12-18 22:28:30,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:28:30,246 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:28:30,253 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:28:30,254 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:28:30,282 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,283 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,283 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,283 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,284 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,284 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,285 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,285 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,285 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,285 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,286 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,286 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,286 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,287 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,287 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,287 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,287 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,288 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,292 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,292 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,293 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,293 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,299 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,299 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,300 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,300 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,304 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,304 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,305 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:28:30,322 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:28:30,339 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:28:30,339 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:28:30,339 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:28:30,339 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:28:30,339 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:28:30,340 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:28:30,340 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:28:30,340 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:28:30,354 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 22:28:30,357 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:28:30,399 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:28:30,399 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:28:30,411 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 22 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:28:30,415 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:28:30,449 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:28:30,450 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:28:30,451 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 22 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:28:30,453 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:28:30,454 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:28:31,917 INFO L206 etLargeBlockEncoding]: Checked pairs total: 442 [2019-12-18 22:28:31,917 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-18 22:28:31,924 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-18 22:28:31,943 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-18 22:28:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-18 22:28:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:28:31,959 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:28:31,960 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:28:31,960 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:28:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:28:31,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1632263201, now seen corresponding path program 1 times [2019-12-18 22:28:31,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:28:31,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573547684] [2019-12-18 22:28:31,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:28:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:28:32,346 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 22:28:32,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573547684] [2019-12-18 22:28:32,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:28:32,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:28:32,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037374704] [2019-12-18 22:28:32,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:28:32,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:28:32,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:28:32,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:28:32,365 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-12-18 22:28:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:28:32,402 INFO L93 Difference]: Finished difference Result 52 states and 109 transitions. [2019-12-18 22:28:32,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:28:32,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:28:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:28:32,414 INFO L225 Difference]: With dead ends: 52 [2019-12-18 22:28:32,414 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 22:28:32,416 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 22:28:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 22:28:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 22:28:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 22:28:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-18 22:28:32,452 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-18 22:28:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:28:32,453 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-18 22:28:32,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:28:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-18 22:28:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:28:32,455 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:28:32,455 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:28:32,455 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:28:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:28:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash -161820659, now seen corresponding path program 1 times [2019-12-18 22:28:32,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:28:32,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690722078] [2019-12-18 22:28:32,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:28:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:28:32,514 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 22:28:32,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690722078] [2019-12-18 22:28:32,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:28:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:28:32,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947033836] [2019-12-18 22:28:32,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:28:32,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:28:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:28:32,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:28:32,518 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-18 22:28:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:28:32,524 INFO L93 Difference]: Finished difference Result 33 states and 61 transitions. [2019-12-18 22:28:32,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:28:32,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:28:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:28:32,526 INFO L225 Difference]: With dead ends: 33 [2019-12-18 22:28:32,526 INFO L226 Difference]: Without dead ends: 33 [2019-12-18 22:28:32,527 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 22:28:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-18 22:28:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-18 22:28:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-18 22:28:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 61 transitions. [2019-12-18 22:28:32,533 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 61 transitions. Word has length 9 [2019-12-18 22:28:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:28:32,534 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 61 transitions. [2019-12-18 22:28:32,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:28:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 61 transitions. [2019-12-18 22:28:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:28:32,535 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:28:32,535 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:28:32,535 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:28:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:28:32,535 INFO L82 PathProgramCache]: Analyzing trace with hash -721473620, now seen corresponding path program 1 times [2019-12-18 22:28:32,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:28:32,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034877102] [2019-12-18 22:28:32,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:28:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:28:32,598 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 22:28:32,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034877102] [2019-12-18 22:28:32,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:28:32,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:28:32,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923419058] [2019-12-18 22:28:32,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:28:32,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:28:32,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:28:32,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:28:32,601 INFO L87 Difference]: Start difference. First operand 33 states and 61 transitions. Second operand 3 states. [2019-12-18 22:28:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:28:32,606 INFO L93 Difference]: Finished difference Result 32 states and 59 transitions. [2019-12-18 22:28:32,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:28:32,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:28:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:28:32,608 INFO L225 Difference]: With dead ends: 32 [2019-12-18 22:28:32,608 INFO L226 Difference]: Without dead ends: 32 [2019-12-18 22:28:32,609 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 22:28:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-18 22:28:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-18 22:28:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 22:28:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 59 transitions. [2019-12-18 22:28:32,614 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 59 transitions. Word has length 10 [2019-12-18 22:28:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:28:32,614 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 59 transitions. [2019-12-18 22:28:32,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:28:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2019-12-18 22:28:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:28:32,615 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:28:32,615 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:28:32,615 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:28:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:28:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash 943627699, now seen corresponding path program 1 times [2019-12-18 22:28:32,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:28:32,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439191077] [2019-12-18 22:28:32,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:28:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:28:32,666 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 22:28:32,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439191077] [2019-12-18 22:28:32,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:28:32,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:28:32,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412704648] [2019-12-18 22:28:32,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:28:32,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:28:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:28:32,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:28:32,670 INFO L87 Difference]: Start difference. First operand 32 states and 59 transitions. Second operand 3 states. [2019-12-18 22:28:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:28:32,687 INFO L93 Difference]: Finished difference Result 35 states and 61 transitions. [2019-12-18 22:28:32,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:28:32,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:28:32,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:28:32,689 INFO L225 Difference]: With dead ends: 35 [2019-12-18 22:28:32,689 INFO L226 Difference]: Without dead ends: 21 [2019-12-18 22:28:32,689 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 22:28:32,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-18 22:28:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-18 22:28:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-18 22:28:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2019-12-18 22:28:32,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2019-12-18 22:28:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:28:32,693 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2019-12-18 22:28:32,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:28:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2019-12-18 22:28:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:28:32,694 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:28:32,694 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:28:32,694 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:28:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:28:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash -810632101, now seen corresponding path program 1 times [2019-12-18 22:28:32,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:28:32,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12295865] [2019-12-18 22:28:32,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:28:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:28:32,743 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 22:28:32,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12295865] [2019-12-18 22:28:32,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:28:32,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:28:32,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283613338] [2019-12-18 22:28:32,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:28:32,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:28:32,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:28:32,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:28:32,745 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2019-12-18 22:28:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:28:32,764 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2019-12-18 22:28:32,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:28:32,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:28:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:28:32,765 INFO L225 Difference]: With dead ends: 25 [2019-12-18 22:28:32,765 INFO L226 Difference]: Without dead ends: 17 [2019-12-18 22:28:32,765 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 22:28:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-18 22:28:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-18 22:28:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-18 22:28:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-18 22:28:32,768 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-12-18 22:28:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:28:32,769 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-18 22:28:32,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:28:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-18 22:28:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:28:32,769 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:28:32,770 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:28:32,770 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:28:32,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:28:32,770 INFO L82 PathProgramCache]: Analyzing trace with hash -867176101, now seen corresponding path program 2 times [2019-12-18 22:28:32,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:28:32,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475834636] [2019-12-18 22:28:32,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:28:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:28:32,829 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 22:28:32,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475834636] [2019-12-18 22:28:32,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:28:32,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:28:32,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511779966] [2019-12-18 22:28:32,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:28:32,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:28:32,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:28:32,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:28:32,832 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-18 22:28:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:28:32,842 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-18 22:28:32,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:28:32,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:28:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:28:32,843 INFO L225 Difference]: With dead ends: 16 [2019-12-18 22:28:32,843 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:28:32,844 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 22:28:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:28:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:28:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:28:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:28:32,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:28:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:28:32,845 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:28:32,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:28:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:28:32,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:28:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:28:32 BasicIcfg [2019-12-18 22:28:32,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:28:32,852 INFO L168 Benchmark]: Toolchain (without parser) took 3962.62 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 101.8 MB in the beginning and 166.4 MB in the end (delta: -64.7 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2019-12-18 22:28:32,853 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 22:28:32,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.67 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 159.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:28:32,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.21 ms. Allocated memory is still 201.3 MB. Free memory was 159.5 MB in the beginning and 156.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:28:32,855 INFO L168 Benchmark]: Boogie Preprocessor took 26.23 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-18 22:28:32,856 INFO L168 Benchmark]: RCFGBuilder took 473.87 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 135.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-12-18 22:28:32,857 INFO L168 Benchmark]: TraceAbstraction took 2620.19 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 134.9 MB in the beginning and 166.4 MB in the end (delta: -31.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-12-18 22:28:32,861 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.67 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 159.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.21 ms. Allocated memory is still 201.3 MB. Free memory was 159.5 MB in the beginning and 156.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.23 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.87 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 135.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2620.19 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 134.9 MB in the beginning and 166.4 MB in the end (delta: -31.6 MB). Peak memory consumption was 15.6 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, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 234 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 442 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 21 SDslu, 30 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1317 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...